PHIUS 2022 Exam Practice

What is the maximum air leakage at pressure test, per gross square foot of total building enclosure area, that PHIUS+ 2015 buildings must achieve? Select one: a. 0.05 CFM @ 50Pa b. 0.005 CFM @ 75Pa c. 0.05 ACH @ 50Pa d. None of the above e. 0.5 CFM @ 50Pa

*a. 0.05 CFM @ 50Pa* b. 0.005 CFM @ 75Pa c. 0.05 ACH @ 50Pa d. None of the above e. 0.5 CFM @ 50Pa

Selecting windows with a SHGC of ______ would be near optimal and also practical for a project in a hot sunny climate. Select one: a. 0.25 b. 1.25 c. 0.50 d. 0.05

*a. 0.25* b. 1.25 c. 0.50 d. 0.05

In conventional construction, which of these building components is least likely to contain a thermal bridge? a. An insulated glass unit b. A roof-wall junction c. A bottom plate sitting on a concrete slab d. An outside corner of a wall

*a. An insulated glass unit* b. A roof-wall junction c. A bottom plate sitting on a concrete slab d. An outside corner of a wall

Peak Heat Load is expressing in _______ (in IP units) which is a measure of _________? a. BTU/hr, power b. kBTU, source factors c. Therms, energy

*a. BTU/hr, power* b. kBTU, source factors c. Therms, energy

What process characterizes water moving upward through soil? a. Capillary action b. Diffusion c. Profusion d. Water pressure

*a. Capillary action* b. Diffusion c. Profusion d. Water pressure

Which measurement unit is used in a psi value (thermal bridge coefficient)? Select One a. Linear feet b. Cubic feet c. Square feet d. BTUs per hour

*a. Linear feet* b. Cubic feet c. Square feet d. BTUs per hour

What is the maximum recommended temperature difference between interior surfaces and interior air in PHIUS+ 2015 buildings? Select one: a. 2.5°F b. 6.8° F c. 7.2° F d. 68.0° F e. 24.7° F

a. 2.5°F b. 6.8° F *c. 7.2° F* d. 68.0° F e. 24.7° F

What is the highest R-value you can specify for a 3.5-inch fiberglass batt? Select one: a. 21 b. 13 c. 11 d. 23 e. 15

a. 21 b. 13 c. 11 d. 23 *e. 15*

Air and water typically constitutes _______ of soil volume? Select one: a. 25% b. 50% c. 32% d. 75%

a. 25% *b. 50%* c. 32% d. 75%

Which two of the following choices represent the most important factors in the thermal performance of an insulation material? Select one or more: a. Air permeability b. R-value per inch c. Air entrainment d. Thickness e. Quality installation

a. Air permeability b. R-value per inch c. Air entrainment d. Thickness *e. Quality installation*

CFM stands for: a. Constant flow metric b. Cubic feet per minute c. Cubic frames measured d. Correct Farenheight measurement

a. Constant flow metric *b. Cubic feet per minute* c. Cubic frames measured d. Correct Farenheight measurement

Which of the follow variables has heating degree hours as its unit of measurement? a. Ft b. Q c. U d. Gt

a. Ft b. Q c. U *d. Gt*

What symbol is used to express the coefficient of thermal bridging? a. K b. Chi c. Psi d. U

a. K b. Chi *c. Psi* d. U

Which of these building materials provides the most reliable and durable continuous air barrier for a roof? Select one: a. Polyurethane caulking b. Spray foam insulation c. 15-pound asphalt felt underlayment d. OSB

a. Polyurethane caulking b. Spray foam insulation c. 15-pound asphalt felt underlayment *d. OSB*

What is the main benefit of a "cold roof" in a snowy climate? Select one: a. To stop air leakage through the ceiling b. To prevent snow on the roof from melting unevenly c. To melt the snow off the roof d. To maximize the R-value of the roof or attic insulation

a. To stop air leakage through the ceiling *b. To prevent snow on the roof from melting unevenly* c. To melt the snow off the roof d. To maximize the R-value of the roof or attic insulation

Which of the following has the highest U-factor? Select one: a. Triple pane glass b. Double pane glass c. Low-e double pane glass d. Single pane glass

a. Triple pane glass b. Double pane glass c. Low-e double pane glass *d. Single pane glass*

Cellulose is moisture resistant and is undamaged by wetting, true or false?

a. True *b. False*

For a project going through PHIUS+ Certification, adding more renewable energy can help meet the annual cooling demand target, true or false? a. True b. False

a. True *b. False*

Surfaces in contact with the ground are not included in the enclosure area used for the infiltration limit in a PHIUS+ project, true or false? a. True b. False

a. True *b. False*

What is the most common concern over the thermal weakness in a high performance triple-pane window unit? Select one: a. U-factor of the insulated class b. Glass emissivity c. Air leakage d. Moisture transmittance e. Thermal bridging through the frame

a. U-factor of the insulated class b. Glass emissivity c. Air leakage d. Moisture transmittance *e. Thermal bridging through the frame*

_________ is measured in grains per pound? a. Water b. Wet Bulb c. Humidity Ratio d. Oxygen

a. Water b. Wet Bulb *c. Humidity Ratio* d. Oxygen

Approximately what ventilation rate is recommended for a residential PHIUS+ 2015 building? Select one: a. 0.30 b. 0.50 c. 0.03 d. 1.5 e. 3.0

*a. 0.30* b. 0.50 c. 0.03 d. 1.5 e. 3.0

What process characterizes water moving upward through soil? Select one: a. Capillary action b. Diffusion c. Profusion d. Water pressure

*a. Capillary action* b. Diffusion c. Profusion d. Water pressure

Low-e coatings reduce the U-factor of a window compared to standard clear glass, true or false?

*a. True* b. False

Which of these has the smallest molecule? Select one: a. Water b. Carbon Dioxide c. Nitrogen d. Oxygen

*a. Water* b. Carbon Dioxide c. Nitrogen d. Oxygen

The ASHRAE/IECC climate zones in the U.S. are numbered from what to what? (warmest to coldest)

1 (warmest), to 8 (coldest)

A whole-window U-factor of ______(BTU/ft^2.hr.F) would be both practical and sufficient for most cold North American climates? a. 0.25 b. 0.10 c. 0.15 d. 0.33

a. 0.25 b. 0.10 *c. 0.15* d. 0.33

What is the maximum solar heat gain coefficient, recommended by PHIUS, for windows in a hot, sunny climate? Select one: a. 0.50 b. 0.45 c. 0.10 d. 0.35 e. 0.20

a. 0.50 b. 0.45 c. 0.10 *d. 0.35* e. 0.20

Which of the following SHGC's is appropriate and practical for a window in a wall that is designed to collect solar energy? Select one: a. 0.75 b. 0.25 c. 0.50 d. 0.85

a. 0.75 b. 0.25 *c. 0.50* d. 0.85

For a very efficient air-source heat pump, heating COP (coefficient of performance) of _______ is a reasonable expectation? a. 1-2 b. 7-8 c. 10-20 d. 3-4

a. 1-2 b. 7-8 c. 10-20 *d. 3-4*

Roughly ________ of annual site electricity use is typical for a large passive house? a. 10,000 kilowatt-hours b. 5,000 kilowatt-hours c. 20% of total kilowatt-hours d. 35% of total kilowatt-hours

a. 10,000 kilowatt-hours *b. 5,000 kilowatt-hours* c. 20% of total kilowatt-hours d. 35% of total kilowatt-hours

In a heating dominated climate, projects meeting PHIUS+ performance targets typically reduce heating needs by what amount? Select one: a. 25% b. 50% c. 120% d. 95% e. 80%

a. 25% b. 50% c. 120% d. 95% *e. 80%*

Which of the following devices likely consumes the most electricity annually? Select one: a. 3-year old refrigerator b. Television c. Microwave d. Pool pump

a. 3-year old refrigerator b. Television c. Microwave *d. Pool pump*

What is the heat transmission limit and (unit of measurement) for a psi value that constitutes a thermal bridge that must be accounted for in the energy model, according to PHIUS+ 2015 requirements? Select one: a. 6 BTU/ft.-hr.-°F b. 0.06 BTU/sq.ft.-hr.-°F c. 0.006 BTU/sq.ft.-hr.-°F d. 0.006 BTU/ft.-hr.-°F e. 0.006 BTU/cu.ft.-hr.-°F

a. 6 BTU/ft.-hr.-°F b. 0.06 BTU/sq.ft.-hr.-°F c. 0.006 BTU/sq.ft.-hr.-°F *d. 0.006 BTU/ft.-hr.-°F* e. 0.006 BTU/cu.ft.-hr.-°F

PHIUS+ requires a separation distance of ____________ between the ventilation intake and any known contamination source. a. 6 inches b. 3 feet c. 10 feet d. 6 feet

a. 6 inches b. 3 feet *c. 10 feet* d. 6 feet

What is the recommended fresh air supply per person for a ventilation system in a residential PHIUS+ 2015 building? Select one: a. 71 CFM b. 24 CFM c. 18 CFM d. 9 CFM e. 4 CFM

a. 71 CFM b. 24 CFM *c. 18 CFM* d. 9 CFM e. 4 CFM

What range of efficiency would you expect from a highly efficient HRV in terms of recycling heat energy between the intake air stream and the exhaust air stream? Select one: a. 82-90% b. 50-75% c. 40-50% d. 94-96% e. 87-93%

a. 82-90% b. 50-75% c. 40-50% d. 94-96% *e. 87-93%*

Which of these building materials provides the most reliable and durable continuous air barrier for a roof? Select one: a. Asphalt shingles b. 15-pound asphalt felt underlayment c. OSB d. Spray foam insulation e. An airtight radiant barrier stapled to the underside of the rafters

a. Asphalt shingles b. 15-pound asphalt felt underlayment *c. OSB* d. Spray foam insulation e. An airtight radiant barrier stapled to the underside of the rafters

How does advanced framing save energy? Select one: a. By using high R-value products b. By substituting wood framing with steel framing c. By substituting wood studs with polystyrene studs d. By minimizing the wood content of a framed wall, increasing effective R-value

a. By using high R-value products b. By substituting wood framing with steel framing c. By substituting wood studs with polystyrene studs *d. By minimizing the wood content of a framed wall, increasing effective R-value*

Which of the following terms describes the efficiency of a water heater, based on the hot water energy output per unit of energy input, and includes storage losses. Select one: a. Energy Efficiency Ratio b. Energy Factor c. Combustion Efficiency d. Steady-state Efficiency e. Recovery Efficiency

a. Energy Efficiency Ratio *b. Energy Factor* c. Combustion Efficiency d. Steady-state Efficiency e. Recovery Efficiency

Which of the following is recommended as a primary air tight layer in a building assembly? Select one: a. House wrap b. Plywood or OSB c. Cellulose insulation d. Drywall e. Spray foam

a. House wrap *b. Plywood or OSB* c. Cellulose insulation d. Drywall e. Spray foam

What is usually the biggest challenge of retrofitting an existing building to meet PHIUS+ standards? Select one: a. Installing high performance windows in old openings b. air sealing the roof-wall junction c. Installing continuous insulation in the walls d. Insulating the foundation

a. Installing high performance windows in old openings b. air sealing the roof-wall junction c. Installing continuous insulation in the walls *d. Insulating the foundation*

Which of these devices is the most challenging in terms of energy use reduction? Select one: a. Laser printer b. Pool pump c. Set-top box d. Laptop computer

a. Laser printer b. Pool pump *c. Set-top box* d. Laptop computer

Most ground moisture barriers are made of____________? Select one: a. Polyisocyanurate b. Pentane c. Polystyrene d. Polyethylene

a. Polyisocyanurate b. Pentane c. Polystyrene *d. Polyethylene*

Which two of the following materials would you classify as Class I vapor retarders? Select one or more: a. Polyolefin house wrap b. Zip sheathing c. Asphalt impregnated fiberboard d. Polyethylene sheeting e. Kraft paper laminated with aluminum foil

a. Polyolefin house wrap b. Zip sheathing c. Asphalt impregnated fiberboard *d. Polyethylene sheeting* *e. Kraft paper laminated with aluminum foil*

A____________ allows water out of a stucco wall assembly? a. flashing channel b. 1/4" mortar hole c. weep screed d. drain

a. flashing channel b. 1/4" mortar hole *c. weep screed* d. drain

A _________ thermal bridge is considered beneficial to a passive building (improves the building performance). a. geometric b. positive c. linear d. negative

a. geometric b. positive c. linear *d. negative*

With a crawl space, why is insulating the ceiling of the crawlspace better than insulating the foundation walls? Select one: a. insulating the crawlspace ceiling is not better than just insulating the foundation b. Because fibrous insulation is more effective than foam c. Ventilation is not needed in the crawl space with floor insulation d. It established the thermal envelope at the boundary of the occupied space

a. insulating the crawlspace ceiling is not better than just insulating the foundation b. Because fibrous insulation is more effective than foam c. Ventilation is not needed in the crawl space with floor insulation *d. It established the thermal envelope at the boundary of the occupied space*

Linear thermal bridges are expressed in (IP) units as: a. kBTU/yr.ft.°F b. BTU/hr.ft.°F c. BTU/hr d. BTU/hr.ft^2.°F e. kWh/°F

a. kBTU/yr.ft.°F *b. BTU/hr.ft.°F* c. BTU/hr d. BTU/hr.ft^2.°F e. kWh/°F

The Net Volume for building is the interior volume and is also used for the __________ volume? a. solar radiation b. Annual Heating Degree Days c. Water Heater Demand d. Ventilation

a. solar radiation b. Annual Heating Degree Days c. Water Heater Demand *d. Ventilation*

Evaporative coolers are best suited for _______ climates? a. wet b. hot c. cold d. dry

a. wet b. hot c. cold *d. dry*

For a given climate a building is designed for Annual Degree Days will impact the _________, while the design temperatures will impact the ________.

annual demands, peak loads

An HRV is suitable for _____________ climates?

heating-dominated, dry

A window installed in the ________ of the wall usually gives a window the lowest installed U-factor.

middle

An average energy factor for high performance heat pump water heater would range from______? a. 2.0-3.4 b. 1.1-1.7 c. 6.7-6.9 d. 0.01-0.20

*a. 2.0-3.4* b. 1.1-1.7 c. 6.7-6.9 d. 0.01-0.20

What do you call a gap between the exterior wall siding and the WRB? a. Drainage plane b. Ventilation cavity c. HRV d. Structural sheathing

*a. Drainage plane* b. Ventilation cavity c. HRV d. Structural sheathing

PHIUS+ Certification requires both pressurization and depressurization tests for the air-tightness requirement, true or false? a. True b. False

*a. True* b. False

A typical WRB will be in the range of ___________ perms? a. 0.02-0.04 b. 10-100 c. 500-550 d. 50-100

a. 0.02-0.04 *b. 10-100* c. 500-550 d. 50-100

Which of these choices describes a geographical area where a radiant floor would be appropriate for a passive building? Select one: a. A Southern marine climate b. A warm humid climate c. A cool humid climate d. A cold dry climate e. A moderate coastal climate

a. A Southern marine climate b. A warm humid climate c. A cool humid climate *d. A cold dry climate* e. A moderate coastal climate

Which of these common materials has the lowest emissivity? Select one: a. A blue painted surface b. Aluminum foil c. A white painted surface d. A red painted surface e. A black painted surface

a. A blue painted surface *b. Aluminum foil* c. A white painted surface d. A red painted surface e. A black painted surface

What type of material is required on crawl space floors and under concrete slabs? Select one: a. Heavy duty ground flashing b. 60 mil waterproofing c. Vapor permeable moisture barrier d. Ground moisture barrier

a. Heavy duty ground flashing b. 60 mil waterproofing c. Vapor permeable moisture barrier *d. Ground moisture barrier*

Which of the following is the most reliable and durable air barrier? Select one: a. House wrap b. Spray foam c. Cellulose insulation d. Plywood taped at the seams

a. House wrap b. Spray foam c. Cellulose insulation *d. Plywood taped at the seams*

Which of these will provide the least expensive roof insulation? Select one: a. Spray foam insulation b. Ceramic insulation c. Foam board insulation d. Fibrous Insulation

a. Spray foam insulation b. Ceramic insulation c. Foam board insulation *d. Fibrous Insulation*

Which of the following does a ducted mini-split system have that a ductless system does not have? Select one: a. Ventilation ducts b. A wall-hung indoor fan coil c. Forced-air ducts d. An expansion valve

a. Ventilation ducts b. A wall-hung indoor fan coil *c. Forced-air ducts* d. An expansion valve

What does the ISO 13788 Low Thermal Inertia Elements calculator evaluate with reference to windows? Select one: a. Visible transmittance b. Condensation resistance c. Air leakage per liner foot d. Exact solar transmittance

a. Visible transmittance *b. Condensation resistance* c. Air leakage per liner foot d. Exact solar transmittance

What is the name of the space between the WRB and the cladding? Select one: a. Wall thermal break b. Ice shield c. Vented-cavity rain screen d. Vapor control layer

a. Wall thermal break b. Ice shield *c. Vented-cavity rain screen* d. Vapor control layer

What building component prevents water from rising out of the ground and into the building? a. Water brake assembly b. Ground water barrier c. Capillary barrier d. Ground vapor barrier

a. Water brake assembly b. Ground water barrier *c. Capillary barrier* d. Ground vapor barrier

What type of moisture barrier prevents water from rising through concrete? Select one: a. Water resistive barrier (WRB) b. Foundation damp proofing c. Vapor retarder d. Capillary barrier

a. Water resistive barrier (WRB) b. Foundation damp proofing c. Vapor retarder *d. Capillary barrier*

Which of the following units of measurements does PHIUS use to specify whole building air leakage? Select one: a. CFM50 per square foot of building enclosure b. BTU per cubic foot per hour c. ACH50 d. CFM50 per cubic foot of volume

*a. CFM50 per square foot of building enclosure* b. BTU per cubic foot per hour c. ACH50 d. CFM50 per cubic foot of volume

Which of the following units of measurement does PHIUS use to specify whole building air leakage? a. CFM50 per square foot of building enclosure b. Btu per cubic foot per hour c. ACH50 d. CFM50 per cubic foot of volume

*a. CFM50 per square foot of building enclosure* b. Btu per cubic foot per hour c. ACH50 d. CFM50 per cubic foot of volume

Which of the following types of insulation has the lowest cost per R-value per square foot? Select one: a. Cellulose loose fill b. Open cell spray foam c. EPS d. Fiberglass loose fill

*a. Cellulose loose fill* b. Open cell spray foam c. EPS d. Fiberglass loose fill

What part of an air-conditioning system expels heat to the outdoors? Select one: a. Condenser b. Compressor c. Evaporator d. Rejecter

*a. Condenser* b. Compressor c. Evaporator d. Rejecter

Which of the following provides the most common thermal break to a standard framed wall? Select one: a. Continuous exterior foam board b. Fiberglass batts c. Dense packed cellulose insulation d. Low density spray foam

*a. Continuous exterior foam board* b. Fiberglass batts c. Dense packed cellulose insulation d. Low density spray foam

What type of wall system contains the most thermal mass? a. ICFs b. Double walls c. SIPs d. Flash and batt walls

*a. ICFs* b. Double walls c. SIPs d. Flash and batt walls

What building pressure difference with outdoors exist inside a building when a whole-house fan is operating? Select one: a. Negative pressure b. A mixture of positive and negative pressure c. Neutral pressure d. Positive pressure

*a. Negative pressure* b. A mixture of positive and negative pressure c. Neutral pressure d. Positive pressure

Which 3 of the following are reasons to install structural sheathing vertically as opposed to horizontally? a. Optimize the strength of the framed wall b. Create an effective air barrier c. Create an effective vapor retarder d. Support every inch of sheathing joints by framing

*a. Optimize the strength of the framed wall* *b. Create an effective air barrier* c. Create an effective vapor retarder *d. Support every inch of sheathing joints by framing*

What of the following best describes relative humidity? Select one: a. Percent of saturation b. Weight of water vapor per weight of dry air c. Dewpoint d. It is synonymous with absolute humidity

*a. Percent of saturation* b. Weight of water vapor per weight of dry air c. Dewpoint d. It is synonymous with absolute humidity

What might a building require for a roof-mounted PV array? Select one: a. Structural engineers stamp b. Electrical engineering review c. Net meter specifications d. Electrical design calculations

*a. Structural engineers stamp* b. Electrical engineering review c. Net meter specifications d. Electrical design calculations

Why does the Ester US and Canada have more rainfall and higher relative humidity compared to the Wester US and Canada a. The Easter US has more proximity to bodies of water b. The Easter US has less solar radiation c. The Eastern US has more solar radiation d. The Eastern US is less mountainous

*a. The Easter US has more proximity to bodies of water* b. The Easter US has less solar radiation c. The Eastern US has more solar radiation d. The Eastern US is less mountainous

The Passivhaus Institute (PHI) set the certification thresholds for Peak Heating Load based on what? a. The amount of heat delivered via fresh air supply b. The standard size of radiant heating systems c. The amount of solar radiation available in Germany

*a. The amount of heat delivered via fresh air supply* b. The standard size of radiant heating systems c. The amount of solar radiation available in Germany

Which two of the following statements is true about large multifamily passive buildings? Select one or more: a. They have a more favorable surface area to volume ratios than single-family passive houses b. They tend to be more dominated by internal loads compared to single-family passive houses c. Heating energy consumption usually dominates annual energy consumption d. Because of the complexity of large multifamily buildings, QA QC and commissioning isn't recommended e. Meeting the PHIUS source energy criterion is typically easier compared to single-family passive houses

*a. They have a more favorable surface area to volume ratios than single-family passive houses* *b. They tend to be more dominated by internal loads compared to single-family passive houses* c. Heating energy consumption usually dominates annual energy consumption d. Because of the complexity of large multifamily buildings, QA QC and commissioning isn't recommended e. Meeting the PHIUS source energy criterion is typically easier compared to single-family passive houses

Which three of the following choices are true about air barriers in PHIUS+ buildings? Select one or more: a. They may also serve as vapor retarders b. They are always located on the exterior of the building c. They must leak no more than 0.05 CFM per square foot of thermal enclosure surface area d. They limit airflow from indoors or outdoors into building assemblies e. They must be comprised of the same building material throughout all of a building's assemblies f. They must protect the building against water intrusion from rain or groundwater

*a. They may also serve as vapor retarders* b. They are always located on the exterior of the building *c. They must leak no more than 0.05 CFM per square foot of thermal enclosure surface area* *d. They limit airflow from indoors or outdoors into building assemblies* e. They must be comprised of the same building material throughout all of a building's assemblies f. They must protect the building against water intrusion from rain or groundwater

Low-e coatings improve the U-factor of a window because? Select one: a. They resist the flow of radiant energy b. They increase the transmission of heat c. They slow convection with the window d. They have a high R-value

*a. They resist the flow of radiant energy* b. They increase the transmission of heat c. They slow convection with the window d. They have a high R-value

_____________ stops rainwater from wetting the structural sheathing of a wood-frame building?

A water-resistive barrier (WRB)

THe ASHRAE/IECC climate zones are labeled with ___ for moist zones, ____ for dry zones, and ______ for marine zones

A,B,C

In the peak load calculation ______ characterizes climate. In the annual heat demand calculation, ______ characterizes climate.

Delta T, Gt

When calculating solar gains, the "g" value is equivalent to the _________?

SHGC (Solar heat gain coefficient)

Which of the following choices best represents the maximum Energy Factor range for currently available residential air-source heat pump water heaters? Select one: a. Between 2.1 EF and 2.5 EF b. Between 1.6 EF and 2.6 EF c. Between 3.7 EF and 4.1 EF d. Between 2.6 EF and 3.4 EF e. Between 4.5 EF and 4.8 EF

Select one: a. Between 2.1 EF and 2.5 EF b. Between 1.6 EF and 2.6 EF c. Between 3.7 EF and 4.1 EF *d. Between 3.0 EF and 3.4 EF* e. Between 4.5 EF and 4.8 EF

The term "framing factor" refers to?

The percentage of a given area of a building assembly that consists of framing

What is the one advantage of ventilating the roof above the roof deck? Select one: a. Allows for more insulation compared to ventilating below the roof deck b. Less likely to leak compared to ventilating below the roof deck c. Less summer heat transmission than ventilating below the roof deck d. Collects more winter solar heat than ventilating below the roof deck

a. Allows for more insulation compared to ventilating below the roof deck b. Less likely to leak compared to ventilating below the roof deck *c. Less summer heat transmission than ventilating below the roof deck* d. Collects more winter solar heat than ventilating below the roof deck

Which of the following is a major difference between SHRAE 62.2-2016 and PHIUS+ with regard to ventilation? Select one: a. Assumptions about outdoor air quality b. Requirements for ventilator orientation c. Assumptions about envelope air leakage rate d. Requirements for ventilator filtration

a. Assumptions about outdoor air quality b. Requirements for ventilator orientation *c. Assumptions about envelope air leakage rate* d. Requirements for ventilator filtration

Which of these choices is the most effective method for providing a building with acceptable indoor air quality? Select one: a. Continuous air movement b. Whole building ventilation c. Aggressive air filtration d. Pollution source control

a. Continuous air movement b. Whole building ventilation c. Aggressive air filtration *d. Pollution source control*

What type of foundation is typically the most economical for a passive building? Select one: a. Crawl space with insulated walls and floor b. Basement with insulated walls and floor c. Insulated all weather wood foundation d. Skirted post in pier foundation with heavily insulated floor e. Insulated concrete slab foundation

a. Crawl space with insulated walls and floor b. Basement with insulated walls and floor c. Insulated all weather wood foundation d. Skirted post in pier foundation with heavily insulated floor *e. Insulated concrete slab foundation*

What type of HRV uses layers of parallel air channels in its heat exchanger? Select one: a. Crossover-type HRV b. Cross-flow HRV c. Enthalpy-wheel HRV d. Transverse-flow HRV e. Counterflow HRV

a. Crossover-type HRV b. Cross-flow HRV c. Enthalpy-wheel HRV d. Transverse-flow HRV *e. Counterflow HRV*

Which three passive cooling design strategies should a CPHC consider before designing an active cooling system? Select one: a. Dehumidification b. Brine or glycol loops c. Cooling through the ventilation system d. Window night time ventilation e. Low SGHC for windows f. Shading features

a. Dehumidification b. Brine or glycol loops c. Cooling through the ventilation system *d. Window night time ventilation* *e. Low SGHC for windows* *f. Shading features*

Which four of the following factors are required to calculate annual heating demand for a PHIUS+ 2015 building? Select one or more: a. Delta T between outdoor design temperature and indoor design temperature b. Heating and cooling design temperatures c. U-values of the building enclosure components d. BTU/hr instantaneous loads for heating and cooling e. Psi values and corresponding lengths of thermal bridges f. Heating degree hours g. Ventilation and infiltration rates

a. Delta T between outdoor design temperature and indoor design temperature b. Heating and cooling design temperatures *c. U-values of the building enclosure components* d. BTU/hr instantaneous loads for heating and cooling *e. Psi values and corresponding lengths of thermal bridges* *f. Heating degree hours* *g. Ventilation and infiltration rates*

What type of space conditioning system has a number of direct-expansion fan coils installed in a building's rooms? Select one: a. Ducted mini split b. Ductless mini split c. Hydronic heat pump d. Constant-volume forced air e. Variable-volume forced air

a. Ducted mini split *b. Ductless mini split* c. Hydronic heat pump d. Constant-volume forced air e. Variable-volume forced air

Which of the following is an advantage of an ICF roof versus a conventional flat roof? Select one: a. Easier to ventilate than conventional roofs b. More insect-resistant than conventional roofs c. More waterproof than conventional d. Thermal mass & disaster resistance

a. Easier to ventilate than conventional roofs b. More insect-resistant than conventional roofs c. More waterproof than conventional *d. Thermal mass & disaster resistance*

_______ is the process by which water vapor changes to liquid water. Select one: a. Evaporation b. Condensation c. Precipitation d. Transpiration

a. Evaporation *b. Condensation* c. Precipitation d. Transpiration

Which of the following heat-flow factors is dimensionless? Select one: a. Psi value b. U-factor c. R-value d. Air change rate e. Chi value

a. Psi value b. U-factor c. R-value d. Air change rate *e. Chi value*

In the Passive Building Physics calculations, "fT" is used to represent_____________? Select one: a. the ventilation coefficient b. the control factor c. the temperature correction factor d. the margin of error

a. the ventilation coefficient b. the control factor *c. the temperature correction factor* d. the margin of error

What is the current annual limit for source energy use per occupant according to the PHIUS+ 2015 standards? Select one: a. 6200 kWh b. 4200 kWh c. 620 kWh d. 6200 mBTU

*a. 6200 kWh* b. 4200 kWh c. 620 kWh d. 6200 mBTU

____________ is the best approach to prevent attic overheating? a. A cool roof b. An electric powered ventilator c. A radiant barrier d. A solar powered ventilator

*a. A cool roof* b. An electric powered ventilator c. A radiant barrier d. A solar powered ventilator

Which of the following space conditioning appliances, adds sensible heat to a building, while at the same time removing latent load?Select one: a. A dehumidifier b. A humidifier c. A heat recovery ventilator d. A mini split heat pump e. An energy recovery ventilator

*a. A dehumidifier* b. A humidifier c. A heat recovery ventilator d. A mini split heat pump e. An energy recovery ventilator

Which of the following choices gives the best definition of a cold roof? Select one: a. A roof with effective ventilation that allows the roof deck to stay cold during winter months b. A superinsulated unventilated roof that allows no heat transmission to heat the roof deck c. And unventilated roof cavity that stays cold during the winter d. And unvented attic where the roof deck is insulated from below by spray foam insulation e. A roof assembly where the roof cavities are insulated with fibrous insulation in the roof deck is insulated with foam insulation

*a. A roof with effective ventilation that allows the roof deck to stay cold during winter months* b. A superinsulated unventilated roof that allows no heat transmission to heat the roof deck c. And unventilated roof cavity that stays cold during the winter d. And unvented attic where the roof deck is insulated from below by spray foam insulation e. A roof assembly where the roof cavities are insulated with fibrous insulation in the roof deck is insulated with foam insulation

Which of the following is the best definition of a "hot roof"? Select one: a. A roof with no air movement next to the sheathing b. A roof that is used as a solar collector c. A roof that is insulated between the rafters d. A roof that becomes hot when absorbing solar energy

*a. A roof with no air movement next to the sheathing* b. A roof that is used as a solar collector c. A roof that is insulated between the rafters d. A roof that becomes hot when absorbing solar energy

Which two of these choices has the largest influence on space conditioning needs? Select one or more: a. A temperature difference between indoors and outdoors b. The flow of moisture between indoors and outdoors c. The average R-value of the building envelope d. The flow of heat between indoors and outdoors e. The flow of air between indoors and outdoors f. The efficiency of the space conditioning system g. Mass-based heat capacity

*a. A temperature difference between indoors and outdoors* *b. The flow of moisture between indoors and outdoors* c. The average R-value of the building envelope d. The flow of heat between indoors and outdoors e. The flow of air between indoors and outdoors f. The efficiency of the space conditioning system g. Mass-based heat capacity

What type of efficiency rating would you expect to find for a gas/combustion-based heating system? Select one: a. AFUE b. SSE c. COP d. HSPF

*a. AFUE* b. SSE c. COP d. HSPF

What type of insulation does building code require for insulating the roof deck of an unvented attic? Select one or more: a. Air-impermeable insulation on the above the roof deck b. Insulation without a vapor retarder installed directly above the ceiling c. Foil faced foam board or fiberglass batts installed in the roof cavity d. Vapor impermeable insulation in the roof cavity or attached to the underside of the roof deck e. Dense pack (not loose fill) fibrous insulation in the roof cavity

*a. Air-impermeable insulation on the above the roof deck* b. Insulation without a vapor retarder installed directly above the ceiling c. Foil faced foam board or fiberglass batts installed in the roof cavity *d. Vapor impermeable insulation in the roof cavity or attached to the underside of the roof deck* e. Dense pack (not loose fill) fibrous insulation in the roof cavity

Which three of the following statements are true about domestic hot water systems in PHIUS+2015 buildings? Select one or more: a. Air-source heat pump water heaters will cool the space/room they're located in b. The annual energy consumption for domestic hot water is higher passive buildings and conventional buildings c. PHIUS+2015 buildings are required to follow EPA Water Sense distribution requirements. Therefore, hot water distribution systems may store no more than 0.5 gallons of water between hot water sources and hot water fixtures d. Domestic hot water storage tanks in PHIUS+ 2015 buildings don't need insulation e. Domestic water heating efficiency in PHIUS+ 2015 buildings is typically better than in conventional buildings

*a. Air-source heat pump water heaters will cool the space/room they're located in* b. The annual energy consumption for domestic hot water is higher passive buildings and conventional buildings *c. PHIUS+2015 buildings are required to follow EPA Water Sense distribution requirements. Therefore, hot water distribution systems may store no more than 0.5 gallons of water between hot water sources and hot water fixtures* d. Domestic hot water storage tanks in PHIUS+ 2015 buildings don't need insulation *e. Domestic water heating efficiency in PHIUS+ 2015 buildings is typically better than in conventional buildings*

Which of the following choices is the correct unit of measurement for the coefficient of performance (COP)? Select one: a. BTUH/watt b. COP has no unit of measurement c. Watts/BTUs d. BTUH/kW e. BTUs per kilowatt hour

*a. BTUH/watt* b. COP has no unit of measurement c. Watts/BTUs d. BTUH/kW e. BTUs per kilowatt hour

Which of these types of ventilators is capable of providing dehumidification through re-circulation of indoor air, in addition to ventilation, in a warm humid climate? Select one: a. CERV b. ERV c. Enthalpy wheel HRV d. Transverse-flow HRV e. Cross-flow ERV

*a. CERV* b. ERV c. Enthalpy wheel HRV d. Transverse-flow HRV e. Cross-flow ERV

Which four of the following factors are necessary for calculating annual heat loss through air exchange by ventilation and unintentional air leakage? Select one or more: a. CFM of air leakage per square foot of building enclosure b. Heating degree hours c. Heating design temperature d. U-factor e. The heat capacity of air f. The AFUE of the heating system g. Thermostat setpoint h. Ventilation airflow rate and hours of operation

*a. CFM of air leakage per square foot of building enclosure* *b. Heating degree hours* c. Heating design temperature d. U-factor *e. The heat capacity of air* f. The AFUE of the heating system g. Thermostat setpoint *h. Ventilation airflow rate and hours of operation*

Which of the following describes the effects air-tightness has on building performance and comfort? Select four. a. Decreases movement of air pollution into building b. Reduces draftiness in rooms c. Increases insulation's effective R-value d. Limits solar gain through a building assembly e. Increases static pressure in ventilation ducts f. Reduces heat loss/gain through air infiltration

*a. Decreases movement of air pollution into building* *b. Reduces draftiness in rooms* *c. Increases insulation's effective R-value* d. Limits solar gain through a building assembly e. Increases static pressure in ventilation ducts *f. Reduces heat loss/gain through air infiltration*

Which of the following choices would provide the best and most economical floor insulation for both R-value and thermal-bridge-free construction? Select one: a. Dense packed fiberglass or rock wool insulation within installation of airtight foam board on the bottom of the floor joists b. Install loose fill cellulose using a polyolefin film to hold the cellulose insulation in place c. Installed fiberglass batts with ventilated space between the batt and the floor deck d. Install low density polyurethane foam to the complete depth of the floor joists with a layer of the spray foam covering the floor joists by 1 inch e. Fill the floor cavity with high density polyurethane spray foam containing no voids and covering the surface of the floor joists with a 2 inch layer of foam sprayed perfectly level

*a. Dense packed fiberglass or rock wool insulation within installation of airtight foam board on the bottom of the floor joists* b. Install loose fill cellulose using a polyolefin film to hold the cellulose insulation in place c. Installed fiberglass batts with ventilated space between the batt and the floor deck d. Install low density polyurethane foam to the complete depth of the floor joists with a layer of the spray foam covering the floor joists by 1 inch e. Fill the floor cavity with high density polyurethane spray foam containing no voids and covering the surface of the floor joists with a 2 inch layer of foam sprayed perfectly level

In a PHIUS+ 2015 building, which of the following common household appliances typically consumes the most energy annually? Select one: a. Domestic water heater b. Clothes Dryer c. Computer d. Clothes Washer e. Refrigerator f. Dishwasher g. Kitchen cooktop re-circulation fan

*a. Domestic water heater* b. Clothes Dryer c. Computer d. Clothes Washer e. Refrigerator f. Dishwasher g. Kitchen cooktop re-circulation fan

Which two of the following data points or data pairs could you use to find the dew point on the psychrometric chart? Select one or more: a. Dry bulb temperature and relative humidity b. Wetbulb temperature c. Relative humidity and humidity ratio d. Moisture pressure and relative humidity e. Barometric pressure and dry bulb temperature

*a. Dry bulb temperature and relative humidity* b. Wetbulb temperature *c. Relative humidity and humidity ratio* d. Moisture pressure and relative humidity e. Barometric pressure and dry bulb temperature

Why are broad trees more effective than tall trees at blocking solar radiation coming from the east and west? Select one: a. East and west solar radiation comes from lower in the sky b. Broad trees absorb more solar radiation compared to tall trees c. Solar radiation form the east and west is hotter d. East and west solar radiation comes from higher in the sky

*a. East and west solar radiation comes from lower in the sky* b. Broad trees absorb more solar radiation compared to tall trees c. Solar radiation form the east and west is hotter d. East and west solar radiation comes from higher in the sky

What type of ventilation system would you choose for a building in a hot, humid climate? Select one; a. Energy recovery ventilator (ERV) b. Exhaust-only ventilator c. Dehumidifier d. Heat recovery ventilator (HRV)

*a. Energy recovery ventilator (ERV)* b. Exhaust-only ventilator c. Dehumidifier d. Heat recovery ventilator (HRV)

Which three of the following building components provide the most protection from rain for a building? Select one or more: a. Flashing b. Thermal breaks c. Water-resistive barrier d. Rain gutters and downspouts e. Ground moisture barriers f. Vapor retarders g. Capillary barriers

*a. Flashing* b. Thermal breaks *c. Water-resistive barrier * *d. Rain gutters and downspouts* e. Ground moisture barriers f. Vapor retarders g. Capillary barriers

Which of the following choices describes the four effects air barriers have on building performance and comfort? Select one or more: a. Increases insulation's effective R-value b. Limits solar gains through a building assembly c. Increases static pressure in ventilation ducts d. Decreased movement of air pollution into a building e. Reduces heat loss through air-leakage areas f. Reduces draftiness in rooms

*a. Increases insulation's effective R-value* b. Limits solar gains through a building assembly c. Increases static pressure in ventilation ducts *d. Decreased movement of air pollution into a building* *e. Reduces heat loss through air-leakage areas* *f. Reduces draftiness in rooms*

Which five of the following choices would be included in a list of ventilation best practices for passive buildings? Select one or more: a. Insulate outdoor-air ducts and ducts with vapor-impermeable insulation delivering conditioned air b. Run supply air ducts all the way to the perimeter of the building c. Keep ducts carrying conditioned air inside the thermal envelope d. Insulate all ducts with vapor-permeable insulation e. Locate exhaust grills in bathrooms and kitchen and supply grills in living rooms and bedrooms f. Use flex ducts when you need to minimize friction losses g. Minimize duct runs outside the conditioned space h. Air seal all ducts to <3% leakage

*a. Insulate outdoor-air ducts and ducts with vapor-impermeable insulation delivering conditioned air* b. Run supply air ducts all the way to the perimeter of the building *c. Keep ducts carrying conditioned air inside the thermal envelope* d. Insulate all ducts with vapor-permeable insulation *e. Locate exhaust grills in bathrooms and kitchen and supply grills in living rooms and bedrooms f. Use flex ducts when you need to minimize friction losses *g. Minimize duct runs outside the conditioned space* *h. Air seal all ducts to <3% leakage*

Which two of the following materials would you classify as Class I vapor retarders? Select one or more: a. Kraft paper laminated with aluminum foil b. Asphalt impregnated fiberboard c. Zip sheathing d. Polyethylene sheathing e. Polyoefin house wrap

*a. Kraft paper laminated with aluminum foil* b. Asphalt impregnated fiberboard c. Zip sheathing *d. Polyethylene sheathing* e. Polyoefin house wrap

Which two of the following choices are advantages of ventilating the roof above the roof deck compared to ventilating the roof below the roof deck? Select one or more: a. Less summer heat transmission b. Collects more winter solar heat c. Allows for more insulation d. Both the roof deck and shingles are ventilated e. Roof is less likely to leak

*a. Less summer heat transmission* b. Collects more winter solar heat c. Allows for more insulation *d. Both the roof deck and shingles are ventilated* e. Roof is less likely to leak

Pascal is a unit of _______? Select one: a. Pressure b. Thermal conductance c. Flow resistance d. Flow rate e. Pressure resistance

*a. Pressure* b. Thermal conductance c. Flow resistance d. Flow rate e. Pressure resistance

Which of these choices are the two most common ways to ventilate an insulated roof? Select one or more: a. Provide an air space above the roof deck using furring strips to provide a ventilated space between the roofing and the roof underlayment or water resistive barrier b. Insulated roof cavities don't need ventilation because of hygric buffering c. Provide an air space above the insulation and below the roof deck and provide sufficient vents to the outdoor environment d. Install plastic pipe in each rafter space to carry the outdoor air through the roof cavities e. Provide extra spacing between shingles or tiles to allow air movement along the roof deck

*a. Provide an air space above the roof deck using furring strips to provide a ventilated space between the roofing and the roof underlayment or water resistive barrier* b. Insulated roof cavities don't need ventilation because of hygric buffering *c. Provide an air space above the insulation and below the roof deck and provide sufficient vents to the outdoor environment* d. Install plastic pipe in each rafter space to carry the outdoor air through the roof cavities e. Provide extra spacing between shingles or tiles to allow air movement along the roof deck

Which of the following factors are used to determine the overall thermal resistance of a window unit? Select one or more: a. Psi-value of the spacer b. U-factor of the glass c. U-factor of the frame d. Psi-value of the rough opening

*a. Psi-value of the spacer* *b. U-factor of the glass* *c. U-factor of the frame* d. Psi-value of the rough opening

What component does a heat pup have than an air conditioner does not? Select one: a. Reversing valve b. Expansion valve c. Evaporator d. Pressure transducer

*a. Reversing valve* b. Expansion valve c. Evaporator d. Pressure transducer

What feature would you require for gas-fired water heater in an airtight building? Select one: a. Sealed combustion b. Power burner c. Included draft d. Open combustion

*a. Sealed combustion* b. Power burner c. Included draft d. Open combustion

What is the purpose of the asphalt felt or other roof underlayment material installed under the shingles? Select one: a. Shed water that gets through the shingles b. Act as an air barrier at the roof c. Act as a radiant barrier for the roof d. Keep the shingles cool during warm weather

*a. Shed water that gets through the shingles* b. Act as an air barrier at the roof c. Act as a radiant barrier for the roof d. Keep the shingles cool during warm weather

The 4 main 'energy balance buckets' that WUFI Passive is solving for to calculate space conditioning demands are: Select one or more: a. Solar Gains b. Internal Gains c. Transmission Losses d. HVAV Equipment COP e. Hair Loss f. Moisture Gain g. Ventilation Losses

*a. Solar Gain* *b. Internal Gains* *c. Transmission Losses* *d. HVAV Equipment COP* e. Hair Loss f. Moisture Gain *g. Ventilation Losses*

Which of the following values are part of the NFRC Rating system? (select 3) a. Solar heat gain coefficient b. Visible transmittance c. Shading coefficient d. Visible transmittance

*a. Solar heat gain coefficient* *b. Visible transmittance* c. Shading coefficient *d. Visible transmittance*

What window performance characteristic is most important to control heat gain in a cooling-dominated climate? Select one: a. Solar heat gain coefficient b. U-factor c. Infrared Transmittance d. Visible transmittance

*a. Solar heat gain coefficient* b. U-factor c. Infrared Transmittance d. Visible transmittance

Which three of these choices are legitimate purposes of ventilation systems in passive buildings? Select one or more: a. To dilute pollutants in indoor air with cleaner outdoor air b. To dry out water spillage from floods or large plumbing leaks c. To limit the relative humidity inside the building during the winter d. To ventilate efficiently using heat recovery and energy recovery ventilation systems e. To provide constant air movement for the comfort of occupants

*a. To dilute pollutants in indoor air with cleaner outdoor air* b. To dry out water spillage from floods or large plumbing leaks *c. To limit the relative humidity inside the building during the winter* d. To ventilate efficiently using heat recovery and energy recovery ventilation systems *e. To provide constant air movement for the comfort of occupants*

Which two of the following choices are the most important factors affecting the rate of diffusion through a building assembly? Select one or more: a. Vapor pressure b. Difference between indoor and outdoor relative humidity c. Building air leakage rate d. Perm rating of building materials in the assembly e. Indoor outdoor temperature difference

*a. Vapor pressure* b. Difference between indoor and outdoor relative humidity c. Building air leakage rate *d. Perm rating of building materials in the assembly* e. Indoor outdoor temperature difference

What building component prevents water, leaking through the cladding, from wetting structural building materials? Select one: a. Water-resistive barrier b. Flashing c. Vapor retarder d. Capillary barrier e. Vapor barrier

*a. Water-resistive barrier* b. Flashing c. Vapor retarder d. Capillary barrier e. Vapor barrier

What does a psychrometer measure to establish a state point on a psychrometric chart? Select one: a. Wet-bulb temperature and dry-bulb temperature b. Humidity ratio and dewpoint c. Dry bulb temperature and relative humidity d. Relative humidity and absolute humidity e. Wet-bulb temperature and enthalpy

*a. Wet-bulb temperature and dry-bulb temperature* b. Humidity ratio and dewpoint c. Dry bulb temperature and relative humidity d. Relative humidity and absolute humidity e. Wet-bulb temperature and enthalpy

The units of measurement of Gt are?

Heating degree hours (kBTU/yr)

An air space located on the outer side of foam insulation will protect the foam from______ and ______.

High Temperature and Bulk Water

The primary purpose of attic or roof ventilation is __________?

To maintain good indoor air quality

Which of the following building components would be considered a geometric thermal bridge? Select one: a. A bolt holding a ledger plate to a wall b. An uninsulated window frame c. A corner wall-ceiling inside junction d. A roof-wall junction

a. A bolt holding a ledger plate to a wall b. An uninsulated window frame c. A corner wall-ceiling inside junction *d. A roof-wall junction*

Which of these choices is the best definition of a thermal break? Select one: a. A highly insulative material that stops heat transmission at a break point between two different building materials b. A material with special qualities that stops heat flow through conductive materials c. A building component that reduces heat transmission through an area of thermal bridging d. A break or crack in a building material caused by severe temperature changes e. A thermal weakness in the thermal envelope at a joint between two different building materials

a. A highly insulative material that stops heat transmission at a break point between two different building materials b. A material with special qualities that stops heat flow through conductive materials c. A building component that reduces heat transmission through an area of thermal bridging d. A break or crack in a building material caused by severe temperature changes *e. A thermal weakness in the thermal envelope at a joint between two different building materials*

Which of these choices does not provide overflow protection for bedrooms with closed interior doors while the ventilator is running? Select one: a. A jump duct b. A door undercut by 1 1/2 inches c. A pressure switch in the supply register d. A grill installed in the door

a. A jump duct b. A door undercut by 1 1/2 inches *c. A pressure switch in the supply register* d. A grill installed in the door

What is the most effective, most efficient, and most environmentally friendly way to prevent attic overheating and transferring excessive solar heat to the building? Select one: a. A powered ventilator b. A reflective cool roof c. A water spray system for cooling the roof evaporatively d. A passive refrigerant based roof cooling system e. A radiant barrier

a. A powered ventilator *b. A reflective cool roof* c. A water spray system for cooling the roof evaporatively d. A passive refrigerant based roof cooling system e. A radiant barrier

Which of the following is the best definition of a "hot roof"? Select one: a. A roof with high-R foam insulation installed above the roof deck b. A roof that is insulated between the rafters c. A roof having no ventilation air moving next to the roof sheathing d. A roof that becomes hot when it absorbs solar energy e. A roof that is used as a solar collector

a. A roof with high-R foam insulation installed above the roof deck b. A roof that is insulated between the rafters *c. A roof having no ventilation air moving next to the roof sheathing* d. A roof that becomes hot when it absorbs solar energy e. A roof that is used as a solar collector

What is a pressure-equalized rain screen? Select one: a. A slotted building assembly that includes a fan for circulating outdoor air between the cladding and the structural sheathing b. A waterproof screen that prevents the intrusion of rain water into a building assembly c. A screen that reduces the excessive pressure of wind and the driving force of rain d. A space, open at both ends to facilitate air circulation, between the cladding and structural sheathing of a wall or roof e. An air space that connects the indoors with the outdoors providing pressure equalization and ventilation

a. A slotted building assembly that includes a fan for circulating outdoor air between the cladding and the structural sheathing b. A waterproof screen that prevents the intrusion of rain water into a building assembly c. A screen that reduces the excessive pressure of wind and the driving force of rain *d. A space, open at both ends to facilitate air circulation, between the cladding and structural sheathing of a wall or roof* e. An air space that connects the indoors with the outdoors providing pressure equalization and ventilation

What primary characteristic of cool roofs reduces cooling energy demand? Select one: a. Air sealing of the roof surface b. Reduction of relative humidity in the attic c. Blockage of solar heat gain d. Long lifespan if installed correctly

a. Air sealing of the roof surface b. Reduction of relative humidity in the attic *c. Blockage of solar heat gain* d. Long lifespan if installed correctly

Where do you start the installation of waterproofing materials in order to lap them in the correct way? a. At the top of the assembly b. From right to left c. From left to right d. At the bottom of the assembly

a. At the top of the assembly b. From right to left c. From left to right *d. At the bottom of the assembly*

Annual Heat Demand is expressed in _______ (in IP units) which is a measure of ___________? a. BTU/hr, power b. joules, heating equipment efficiency c. kBTU, energy

a. BTU/hr, power b. joules, heating equipment efficiency *c. kBTU, energy*

Which of these materials is a class I vapor retarder? Select one: a. Building wrap b. Water-resistive barrier c. 1-inch EPS d. Foundation waterproofing

a. Building wrap b. Water-resistive barrier c. 1-inch EPS *d. Foundation waterproofing*

How does advanced framing save energy? Select one: a. By using high R-value products b. By substituting wood framing with steel framing c. By substituting wood wall studs with polystyrene studs d. By minimizing the wood content of a framed wall, increasing effective possible R-value

a. By using high R-value products b. By substituting wood framing with steel framing c. By substituting wood wall studs with polystyrene studs *d. By minimizing the wood content of a framed wall, increasing effective possible R-value*

What common gas serves as a controlling variable for demand-controlled or advanced ventilation systems? Select one: a. Carbon monoxide b. Oxygen c. Carbon dioxide d. Methane

a. Carbon monoxide b. Oxygen *c. Carbon dioxide* d. Methane

What building component protects structural sheathing from bulk water infiltration? Select one: a. Caulking b. Vapor barrier c. Water-resistive barrier d. Vapor retarder e. Capillary barrier

a. Caulking b. Vapor barrier *c. Water-resistive barrier* d. Vapor retarder e. Capillary barrier

Which variable in the formula for peak ventilation load (Pv = nv x VC x pp x Delta T) is treated as a constant? a. Chi value b. Specific heat capacity of air c. Temperature d. Conductivity

a. Chi value *b. Specific heat capacity of air* c. Temperature d. Conductivity

Which of the following choices would be an accurate description for latex painted drywall? Select one: a. Class II vapor retarder b. Class III vapor retarder c. Class I vapor retarder d. Vapor resistor e. Vapor barrier

a. Class II vapor retarder *b. Class III vapor retarder* c. Class I vapor retarder d. Vapor resistor e. Vapor barrier

In which of the following types of climate could you use a supply air temperature of 65°F to air-condition a building? Select one: a. Climate on the coast of the Gulf of Mexico b. Climate on the Atlantic coast of the US c. Cool, humid climate d. Hot, humid climate e. The climate of the inland Western US

a. Climate on the coast of the Gulf of Mexico b. Climate on the Atlantic coast of the US c. Cool, humid climate d. Hot, humid climate *e. The climate of the inland Western US*

According to isotherms and WUFI reports, which window-installation location has a slight advantage in resisting heat transmission over other window-installation locations? Select one: a. Close to the outdoor surface of a wall b. No real advantage based on window-installation position c. Close to the indoor surface of a wall d. Halfway between the indoor surface of wall and the exterior surface of a wall

a. Close to the outdoor surface of a wall b. No real advantage based on window-installation position c. Close to the indoor surface of a wall *d. Halfway between the indoor surface of wall and the exterior surface of a wall*

What are the two main components of the indoor unit of a ductless mini split system? Select one: a. Compressor and expansion valve b. Evaporator and compressor c. Condenser and condenser fan d. Indoor coil and fan

a. Compressor and expansion valve b. Evaporator and compressor c. Condenser and condenser fan *d. Indoor coil and fan*

What is the best way to build an insulated foundation wall? Select one: a. Concrete block with interior foam insulation b. Poured foundation walls insulated with fiberglass batts c. Treated structural insulated panels d. Insulated concrete forms

a. Concrete block with interior foam insulation b. Poured foundation walls insulated with fiberglass batts c. Treated structural insulated panels *d. Insulated concrete forms*

Which of the following choices relates best to the benefits of high-performance windows? Select one: a. Eliminates indoor air quality issues due to pollen and mold intrusion b. Results in relative humidity levels within the comfort range c. Results in low peak loads d. Results in low internal gains

a. Eliminates indoor air quality issues due to pollen and mold intrusion b. Results in relative humidity levels within the comfort range *c. Results in low peak loads* d. Results in low internal gains

Which of the following best describes desorption? Select one: a. Evaporation from a surface b. Water vapor entering the surface of a material c. Water vapor leaving the surface of a material d. Capillary action

a. Evaporation from a surface b. Water vapor entering the surface of a material *c. Water vapor leaving the surface of a material* d. Capillary action

Which function is an Energy Recovery Ventilator (ERV) not capable of? Select one: a. Exchanging heat between incoming and outgoing air b. Exchanging moisture between incoming and outgoing air c. Filtering supply and exhaust air d. Dehumidifying indoor air

a. Exchanging heat between incoming and outgoing air b. Exchanging moisture between incoming and outgoing air c. Filtering supply and exhaust air *d. Dehumidifying indoor air*

Which of the following would eliminate the need for exterior window trim? Select one: a. Exterior foam insulation board b. Exterior window jamb extensions c. Insulated vinyl window frames

a. Exterior foam insulation board *b. Exterior window jamb extensions* c. Insulated vinyl window frames

Which of the following would eliminate the need for exterior window trim? Select one: a. Exterior foam insulation board b. Exterior window jamb extensions c. Insulated vinyl window frames

a. Exterior foam insulation board *b. Exterior window jamb extensions* c. Insulated vinyl window frames

Which of the following describes a material that prevents water from the ground wicking into building materials? Select one: a. Flashing b. Vapor retarder c. Thermal break d. Air-vapor barrier e. Capillary break

a. Flashing b. Vapor retarder c. Thermal break d. Air-vapor barrier *e. Capillary break*

How do you find Delta T from the outdoor design temperature for a Peak Heating Load calculation? a. From the National Oceanic and Atmospheric Administration b. Directly from the PHIUS climate database c. Add the design temperature to the customer's thermostat setpoint. d. Subtract the design temperature from the interior heating setpoint (68 degrees F)

a. From the National Oceanic and Atmospheric Administration b. Directly from the PHIUS climate database c. Add the design temperature to the customer's thermostat setpoint. *d. Subtract the design temperature from the interior heating setpoint (68 degrees F)*

Sensible heat is________? Select one: a. Heat absorbed by a solid when it sublimes b. Heat gained or lost with an increase or decrease in temperature c. Heat transferred to a building from the sun d. Heat gained or lost during aw phase change

a. Heat absorbed by a solid when it sublimes *b. Heat gained or lost with an increase or decrease in temperature* c. Heat transferred to a building from the sun d. Heat gained or lost during aw phase change

What is the largest sector of electrical loads typically metered in todays house projects? Select one: a. Home baseload electricity b. Residential MELs (RMELs) c. Commercial baseload electricity d. Commercial MELs (CMELs)

a. Home baseload electricity *b. Residential MELs (RMELs)* c. Commercial baseload electricity d. Commercial MELs (CMELs)

Which of the following choices describes how liquid water can move upward from the water table through the soil? Select one or more: a. Ice lensing b. Water pressure equilibrium c. Water profusion d. Water vapor diffusion e. Capillary action

a. Ice lensing b. Water pressure equilibrium c. Water profusion d. Water vapor diffusion *e. Capillary action*

Which of these choices is the most important factor in the flow rate of airborne moisture through building assemblies? Select one: a. Indoor outdoor temperature difference b. Difference between the indoor and outdoor relative humidity c. Building enclosure air-leakage rate d. Equilibrium moisture content of building materials e. Vapor-diffusion rate

a. Indoor outdoor temperature difference b. Difference between the indoor and outdoor relative humidity *c. Building enclosure air-leakage rate* d. Equilibrium moisture content of building materials e. Vapor-diffusion rate

In a cold climate, which of the following choices would be the safest and most energy efficient way to protect a framed wall, insulated with fibrous insulation, from mold risk due to high moisture content and moisture build up inside the wall assembly? Select one: a. Install foam board to the wall studs before installing the interior drywall b. Install insulated sheathing outboard of the wall's structural sheathing c. Use fibrous insulation that contains a desiccant drying agent d. Leave ventilating air space in the last 2 inches of the wall cavity inboard of the structural sheathing e. Provide a ventilated space between the drywall in the fibrous insulation

a. Install foam board to the wall studs before installing the interior drywall *b. Install insulated sheathing outboard of the wall's structural sheathing* c. Use fibrous insulation that contains a desiccant drying agent d. Leave ventilating air space in the last 2 inches of the wall cavity inboard of the structural sheathing e. Provide a ventilated space between the drywall in the fibrous insulation

What moisture protection element is common with European windows but uncommon with North American windows? Select one: a. Integrated perimeter gasket system b. integrated head jamb flashing c. integrated side jamb flashing d. integral exterior sill

a. Integrated perimeter gasket system b. integrated head jamb flashing c. integrated side jamb flashing *d. integral exterior sill*

Which two of these envelope-related factors makes the biggest impact on annual cooling demand? Select one or more: a. Internal gains — both sensible and latent b. Vapor diffusion rate c. Air exchange due to air leakage and ventilation — both sensible and latent d. Solar heat gain e. Indoor-outdoor temperature difference

a. Internal gains — both sensible and latent b. Vapor diffusion rate *c. Air exchange due to air leakage and ventilation — both sensible and latent* d. Solar heat gain e. Indoor-outdoor temperature difference

How does a solar screen reduce window solar gain? Select one: a. It reflects solar energy after passing through the glass b. It absorbs solar radiation before it reaches the glass c. It turns the solar rays angling them away from the window d. It delays the passage of solar energy through the glass

a. It reflects solar energy after passing through the glass *b. It absorbs solar radiation before it reaches the glass* c. It turns the solar rays angling them away from the window d. It delays the passage of solar energy through the glass

What advantage does a metal-clad window have over a vinyl window? Select one: a. Lighter Weight b. More durable material c. Easier to install d. lower cost

a. Lighter Weight *b. More durable material* c. Easier to install d. lower cost

Which load listed below makes up the highest percentage of baseload electricity use? Select one: a. Lighting b. Laundry c. Refrigeration d. Miscellaneous Electric Loads (MELs)

a. Lighting b. Laundry c. Refrigeration *d. Miscellaneous Electric Loads (MELs)*

Of the following climate factors, which is the best predictor of annual heating energy? Select one: a. Longitude of the building site b. Heating degree days c. Average winter solar radiation d. Heating peak design temperature

a. Longitude of the building site *b. Heating degree days* c. Average winter solar radiation d. Heating peak design temperature

To determine a building's baseload energy use, _________ should be subtracted from the total energy use? a. MEL consumption b. Alternative energy generation c. PV energy generation d. Space conditioning energy

a. MEL consumption b. Alternative energy generation c. PV energy generation *d. Space conditioning energy*

What is the minimum filter level required for fresh-air ventilation for PHIUS+ projects? Select one: a. MERV 12 b. 95% c. 75% d. MERV 8

a. MERV 12 b. 95% c. 75% *d. MERV 8*

Which of the following is a synonym for a Class I vapor retarder? Select one: a. Moisture barrier b. Air-vapor barrier c. Vapor diffusion barrier d. Vapor barrier e. Air barrier

a. Moisture barrier b. Air-vapor barrier c. Vapor diffusion barrier *d. Vapor barrier* e. Air barrier

Why does the Western US and Canada get more solar radiation than the Eastern US and Canada? a. More mountainous b. Fewer Clouds c. Air is denser in the West d. More humid

a. More mountainous *b. Fewer Clouds* c. Air is denser in the West d. More humid

Which of these technologies holds the most promise to reduce energy use and climate change in an economical way? Select one: a. Nuclear fusion b. Biofuels c. Solar thermal energy d. Carbon capture e. Energy conservation

a. Nuclear fusion b. Biofuels *c. Solar thermal energy* d. Carbon capture e. Energy conservation

Which one of these types of ventilators exchanges moisture between incoming and outgoing airstreams? Select one: a. Passive tube ventilator b. HRV c. MERV d. Boiler e. ERV

a. Passive tube ventilator b. HRV c. MERV d. Boiler *e. ERV*

Which element can help reduce thermal bridging through an installed window unit? Select one: a. Peel & Stick flashing b. Dense-packed cellulose c. Over insulation d. The wood window buck

a. Peel & Stick flashing b. Dense-packed cellulose *c. Over insulation* d. The wood window buck

Which of these would be the least desirable foundation approach for an energy efficient building? Select one: a. Piers with an insulated floor b. Conditioned crawl space with insulated foundation c. Insulated basement d. Slab on grade

a. Piers with an insulated floor *b. Conditioned crawl space with insulated foundation* c. Insulated basement d. Slab on grade

In addition to corners, which three other locations could most likely harbor the thermal bridges in a building? Select one or more: a. Places in walls or roofs where studs and rafters lie b. At duplex receptacles and switches c. Window openings d. Intersections between materials e. Penetrations in the thermal enclosure

a. Places in walls or roofs where studs and rafters lie b. At duplex receptacles and switches *c. Window openings* *d. Intersections between materials* *e. Penetrations in the thermal enclosure*

A building product rated at 5 perms of water-vapor permeability is a _________vapor retarder. Select one: a. Premium b. Class II c. Class III d. Grade A

a. Premium b. Class II *c. Class III* d. Grade A

Which of these choices represents a realistic maximum for PHIUS window window R values in cold climates? Select one: a. R - 6 b. R - 18 c. R - 9 d. R - 4 e. R - 12

a. R - 6 b. R - 18 *c. R - 9* d. R - 4 e. R - 12

What is the approximate R-value of 2 inches of medium-density EPS foam insulation? Select one: a. R-4 b. R-12 c. R-6 d. R-10 e. R-8

a. R-4 b. R-12 c. R-6 d. R-10 *e. R-8*

What is a potential problem with whole house fans? Select one: a. Radiant losses b. Pressurization c. Poor transmittance d. Air leakage

a. Radiant losses b. Pressurization c. Poor transmittance *d. Air leakage*

What part of a PV system converts the solar electricity for entry to the grid? Select one: a. Rectifier b. Optimizer c. Power converter d. Inverter

a. Rectifier b. Optimizer c. Power converter *d. Inverter*

Baseload would likely be the greatest percentage of total annual energy/use in which of these cities? a. Sacramento b. Omaha c. San Diego d. Minneapolis

a. Sacramento b. Omaha *c. San Diego* d. Minneapolis

What window performance characteristic is most important to control heat gain in a heating-dominated climate? a. Solar heat gain coefficient b. U-factor c. Infrared Transmittance d. Visible transmittance

a. Solar heat gain coefficient *b. U-factor* c. Infrared Transmittance d. Visible transmittance

Which two of these choices have both a sensible-heat and a latent-heat effect on air-conditioning energy use during the summer? Select one or more: a. Solar radiation b. Building air leakage c. Indoor-outdoor temperature difference d. Vapor diffusion e. Internal heat gains

a. Solar radiation *b. Building air leakage* c. Indoor-outdoor temperature difference d. Vapor diffusion *e. Internal heat gains*

Excluding plug loads, in single-family PHIUS+ 2015 buildings, which of the following energy loads is typically the largest? Select one: a. Solar radiation cooling load b. Dehumidification loads c. Lighting load d. Peak heating load e. Domestic hot water loads

a. Solar radiation cooling load b. Dehumidification loads c. Lighting load d. Peak heating load *e. Domestic hot water loads*

Which of the following is a thermal bridge? Select one: a. Spray foam installed in a roof cavity b. The structural frame of a building c. An insulated window frame d. An insulated building cavity

a. Spray foam installed in a roof cavity *b. The structural frame of a building* c. An insulated window frame d. An insulated building cavity

Which of these will provide the lease expensive roof insulation? Select one: a. Spray foam insulation b. Ceramic insulation c. Foam board insulation d. Fibrous insulation

a. Spray foam insulation b. Ceramic insulation c. Foam board insulation *d. Fibrous insulation*

How would you protect polystyrene foam installed under dark roofing in a practical and effective way? Select one: a. Spray the roof with water during hot weather b. Use white EPS foam that reflects the sun's radiant heat c. Install an air space and a vapor permeable radiant barrier above the foam d. The foam needs no protection in this situation

a. Spray the roof with water during hot weather b. Use white EPS foam that reflects the sun's radiant heat *c. Install an air space and a vapor permeable radiant barrier above the foam* d. The foam needs no protection in this situation

Which of the following materials is most vulnerable to moisture damage? Select one: a. Structural lumber b. Oriented strand board c. Cellulose insulation d. Polyolefin house wrap e. Paper-faced drywall

a. Structural lumber b. Oriented strand board c. Cellulose insulation d. Polyolefin house wrap *e. Paper-faced drywall*

Which of the following processes are caused by an increase or decrease of latent heat? Select one: a. Sublimation and deposition b. Condensation and evaporation c. Absorption and desorption d. Melting and freezing

a. Sublimation and deposition b. Condensation and evaporation c. Absorption and desorption *d. Melting and freezing*

Which of the following climate control situations is least likely to require the use of the psychometric chart? a. Summer ERV operation b. Wintertime indoor dewpoint c. Winter space heating d. Summer humid climate air conditioning

a. Summer ERV operation b. Wintertime indoor dewpoint *c. Winter space heating* d. Summer humid climate air conditioning

Which three of the following factors are required to calculate the amount of heating or cooling deliverable by ventilation airflow? Select one or more: a. Temperature correction factor b. Heat capacity of air at the appropriate altitude c. Ventilation airflow rate d. Annual heating degree hours e. Temperature difference between the incoming air and the air temperature exiting the heating/cooling coil

a. Temperature correction factor *b. Heat capacity of air at the appropriate altitude* *c. Ventilation airflow rate* d. Annual heating degree hours *e. Temperature difference between the incoming air and the air temperature exiting the heating/cooling coil*

Which three of the following factors are required to calculate the amount of heating or cooling deliverable by ventilation airflow? Select one or more: a. Temperature correction factor b. Ventilation airflow rate c. Temperature difference between the incoming air and the air temperature exiting the heating/cooling coil d. Annual heating degree hours e. Heat capacity of air at the appropriate altitude

a. Temperature correction factor *b. Ventilation airflow rate* *c. Temperature difference between the incoming air and the air temperature exiting the heating/cooling coil* d. Annual heating degree hours *e. Heat capacity of air at the appropriate altitude*

Which of the following would have the highest relative humidity and greatest precipitation? a. Tennessee and Kentucky b. Coastal Oregon c. The Northern Plains d. The Midwest

a. Tennessee and Kentucky *b. Coastal Oregon* c. The Northern Plains d. The Midwest

Which three of the following factors affect the rate of water-vapor diffusion through building materials? Select one or more: a. The air pressure difference across the material b. The difference in absolute humidity across the building material c. The temperature difference across the material d. A building material's water vapor permeability e. The relative humidity in the environment around the material

a. The air pressure difference across the material *b. The difference in absolute humidity across the building material* c. The temperature difference across the material *d. A building material's water vapor permeability* *e. The relative humidity in the environment around the material*

What happens to the dewpoint of outdoor air when the outdoor temperature falls at night? a. The dewpoint increases b. The dewpoint stays the same c. Not enough information provided to formulate a correct answer d. The dewpoint decreases e. The dewpoint sometimes increases and sometimes decreases

a. The dewpoint increases *b. The dewpoint stays the same* c. Not enough information provided to formulate a correct answer d. The dewpoint decreases e. The dewpoint sometimes increases and sometimes decrease

At saturation, which of the following choices has the same numerical value as the dewpoint? Select one: a. The enthalpy b. The humidity ratio c. The relative humidity d. The wet-bulb temperature e. The absolute humidity

a. The enthalpy b. The humidity ratio c. The relative humidity *d. The wet-bulb temperature* e. The absolute humidity

When there is a subscript following CFM or ACH, that subscript is representing ________. Select one: a. The outdoor temperature the air tightness test result was completed at, in Farenheight b. The percentage error on the air-tightness test c. The pressure the air tightness test result was completed at, in Pascals d. The percentage of the building that was closed off for the air-tightness test

a. The outdoor temperature the air tightness test result was completed at, in Farenheight b. The percentage error on the air-tightness test *c. The pressure the air tightness test result was completed at, in Pascals* d. The percentage of the building that was closed off for the air-tightness test

What location of a window installation carries the most risk of leaking water into the wall? Select one: a. The side window jams b. Areas of the window unit between the glass and the sash c. The top corners of the sill d. The bottom corners of the sill e. Areas of the window unit between the sash and the window frame

a. The side window jams b. Areas of the window unit between the glass and the sash c. The top corners of the sill *d. The bottom corners of the sill* e. Areas of the window unit between the sash and the window frame

What window energy loss are occupants generally most aware of? a. Thermal bridging b. Radiation transfer c. Infrared transmittance d. Air leakage

a. Thermal bridging b. Radiation transfer c. Infrared transmittance *d. Air leakage*

What you call a computer generated image that shows constant-temperature lines in a building assembly while the heating or cooling system is operating? Select one: a. Thermo scan b. Thermal image c. Thermograph d. Isotherm e. Heat gradation

a. Thermo scan b. Thermal image c. Thermograph *d. Isotherm* e. Heat gradation

What is the difference between a boiler-heated indirect water heating tank and a solar water heating tank? Select one: a. They are virtually identical b. They are both indirect, but the boiler-heated indirect tank has two coils c. They are both indirect, but the solar tank typically has two coils d. Neither is indirect, they are both direct water heating tanks

a. They are virtually identical b. They are both indirect, but the boiler-heated indirect tank has two coils *c. They are both indirect, but the solar tank typically has two coils* d. Neither is indirect, they are both direct water heating tanks

Which two of these choices are consequences of operating and exhaust-only ventilation system in a building? Select one or more: a. They exhaust air out of the building through random openings b. They maintain neutral pressure between the building and outdoors c. They depressurize buildings d. They typically draw make-up air through air leaks in the building envelope e. They pressurize buildings

a. They exhaust air out of the building through random openings b. They maintain neutral pressure between the building and outdoors *c. They depressurize buildings* *d. They typically draw make-up air through air leaks in the building envelope* e. They pressurize buildings

What type of domestic hot water (DHW) circulation system must be used to meet distribution requirements in a passive building? Select one: a. Time activated b. Temperature driven c. Continuous circulation d. Demand-based

a. Time activated b. Temperature driven c. Continuous circulation *d. Demand-based*

What is the most important purpose of attic or roof ventilation? Select one: a. To maintain good indoor a air quality b. To keep the insulation cool c. To neutralize wind pressure against the roof d. To keep the attic cool e. To keep the roof deck dry

a. To maintain good indoor a air quality b. To keep the insulation cool c. To neutralize wind pressure against the roof d. To keep the attic cool *e. To keep the roof deck dry*

What would be the major purpose for raising a retrofit house above its existing foundation? Select one: a. To protect the above-grade from flooding b. To repair foundation wall and insulate it c. To insulate the footing and install a capillary barrier d. To insulate the slab

a. To protect the above-grade from flooding b. To repair foundation wall and insulate it c. To insulate the footing and install a capillary barrier *d. To insulate the slab*

Which of these is the most vapor permeable? Select one: a. XPS b. Drywall c. Polyethylene d. Damp proofing

a. XPS *b. Drywall* c. Polyethylene d. Damp proofing

Which foundation type would be the best choice for a flood prone region? Select one: a. basement b. posts or pilings c. crawl space d. slab on grade

a. basement *b. posts or pilings* c. crawl space d. slab on grade

For PHIUS+ certification, a maximum U-value for windows is set based on _________ and___________ at a given design condition? Select one: a. daylight, blocking solar gain b. comfort, limiting condensation risk c. visibility, thermal views

a. daylight, blocking solar gain *b. comfort, limiting condensation risk* c. visibility, thermal views

For window glazing coatings, "low-e" stands for "low-___________"? Select one: a. exhaust b. emissivity c. energy d. enthalpy

a. exhaust *b. emissivity* c. energy d. enthalpy