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Right - The home’s ground source heat pump preheats water for the air source heat pump water heater.

Right - The home’s ground source heat pump preheats water for the air source heat pump water heater.
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Right - The home’s high-efficiency gas boiler provides domestic hot water as well as in-floor radiant heat, while a high-efficiency heat pump provides cooling and a secondary source of heating.

Right - The home’s high-efficiency gas boiler provides domestic hot water as well as in-floor radiant heat, while a high-efficiency heat pump provides cooling and a secondary source of heating.
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Right - The precast insulated concrete walls of the basement provide a conditioned space for the high-efficiency (18 SEER, 9.5 HSPF) air-source heat pump, with its variable-speed fan, five-stage compressor, and MERV 11 filter.

Right - The precast insulated concrete walls of the basement provide a conditioned space for the high-efficiency (18 SEER, 9.5 HSPF) air-source heat pump, with its variable-speed fan, five-stage compressor, and MERV 11 filter.
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Right - The sealed conditioned crawlspace provides a clean, dry, and temperate environment for the home’s supplemental dehumidifier.

Right - The sealed conditioned crawlspace provides a clean, dry, and temperate environment for the home’s supplemental dehumidifier.
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Right - This enclosed parking garage in a multistory multifamily building is equipped with mechanical exhaust to remove airborne contaminants from the garage.

Right - This enclosed parking garage in a multistory multifamily building is equipped with mechanical exhaust to remove airborne contaminants from the garage.
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Right - This evaporative cooler is wall mounted to reduce leak effects and allow for ease of maintenance.

Right - This evaporative cooler is wall mounted to reduce leak effects and allow for ease of maintenance.
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Right - This shared enclosed parking garage is equipped with exhaust fans to remove airborne contaminants from the garage.

Right - This shared enclosed parking garage is equipped with exhaust fans to remove airborne contaminants from the garage.
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Right – An air-to-water heat pump provides water and space heating while a heat recovery ventilator provides fresh air that is filtered by the HEPA filter.

Right – An air-to-water heat pump provides water and space heating while a heat recovery ventilator provides fresh air that is filtered by the HEPA filter.
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Right – An ERV provides filtered fresh air to this small home.

Right – An ERV provides filtered fresh air to this small home.
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Right – An HVAC contractor installs a 4-inch-thick MERV 13 filter at the intake grille of this return air vent to prevent dust, allergens, smoke, and viruses from entering the duct system.

Right – An HVAC contractor installs a 4-inch-thick MERV 13 filter at the intake grille of this return air vent to prevent dust, allergens, smoke, and viruses from entering the duct system.
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Right – An insulated space is provided in the home’s attic to house the HVAC equipment.

Right – An insulated space is provided in the home’s attic to house the HVAC equipment.
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Right – Commissioning of HVAC equipment is important for best performance.

Right – Commissioning of HVAC equipment is important for best performance.
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Right – Flood vents are located near grade and HVAC equipment is elevated.

Right – Flood vents are located near grade and HVAC equipment is elevated.
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Right – The builder has provided homeowners manuals and racks to hold them on the side of the HVAC cabinet in the utility room.

Right – The builder has provided homeowners manuals and racks to hold them on the side of the HVAC cabinet in the utility room.
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Right – The corridor in this multistory building is pressurized with outdoor supply air.

Right – The corridor in this multistory building is pressurized with outdoor supply air.
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Right – The elevator lobby of this multistory building is pressurized with outdoor air supplied to the space through this ceiling supply register.

Right – The elevator lobby of this multistory building is pressurized with outdoor air supplied to the space through this ceiling supply register.
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Right – The HVAC equipment is tested after installation.

Right – The HVAC equipment is tested after installation.
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Right – The HVAC unit installed in the insulated attic uses a heat pump to provide heating and cooling while also providing dehumidification and fresh air ventilation.

Right – The HVAC unit installed in the insulated attic uses a heat pump to provide heating and cooling while also providing dehumidification and fresh air ventilation.
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Right – This energy recovery ventilator provides fresh air and exhausts stale air through a heat exchanger that recovers heat from the outgoing air in winter and reduces heat from incoming air in the summer to provide ventilation without wasting energy.

Right – This energy recovery ventilator provides fresh air and exhausts stale air through a heat exchanger that recovers heat from the outgoing air in winter and reduces heat from incoming air in the summer to provide ventilation without wasting energy.
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Right – This home was constructed with no- or low-VOC paints, glues, flooring, cabinetry, and finishes that decrease indoor air pollutants in accordance with EPA Indoor airPLUS specifications.

Right – This home was constructed with no- or low-VOC paints, glues, flooring, cabinetry, and finishes that decrease indoor air pollutants in accordance with EPA Indoor airPLUS specifications.
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Right – This home’s HVAC system consists of a ground source heat pump that provides heating and cooling with a rated efficiency of 5.0 COP.

Right – This home’s HVAC system consists of a ground source heat pump that provides heating and cooling with a rated efficiency of 5.0 COP.
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Right – This HRV is ducted separately from the home’s ductless heat pumps to provide filtered fresh air to sleeping and living areas and to exhaust stale air from the bathrooms and laundry.

Right – This HRV is ducted separately from the home’s ductless heat pumps to provide filtered fresh air to sleeping and living areas and to exhaust stale air from the bathrooms and laundry.
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Right – This HVAC condensing unit is elevated on a raised-slab

Right – This HVAC condensing unit is elevated on a raised-slab
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Right – This plug-in sensor detects indoor air quality issues in a home, including elevated levels of humidity, VOCs, smoke, carbon dioxide, or small particulates; if detected, the sensor can switch on the nearest exhaust fan to remove the pollutants.

Right – This plug-in sensor detects indoor air quality issues in a home, including elevated levels of humidity, VOCs, smoke, carbon dioxide, or small particulates; if detected, the sensor can switch on the nearest exhaust fan to remove the pollutants.