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Right – The HVAC outdoor unit is anchored on a bed of masonry bricks, 1 foot or more above the base flood elevation.

Right – The HVAC outdoor unit is anchored on a bed of masonry bricks, 1 foot or more above the base flood elevation.
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Right – The outside unit of the mini-split heat pump system is installed on a concrete pad and away from shrubs.

Right – The outside unit of the mini-split heat pump system is installed on a concrete pad and away from shrubs.
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Right – This exhaust fan use metal ducting that goes directly to the soffit to minimize penetrations through the roof.

Right – This exhaust fan use metal ducting that goes directly to the soffit to minimize penetrations through the roof.
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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 sealed combustion gas furnace has a fresh air intake with an electronically controlled damper.

Right – This sealed combustion gas furnace has a fresh air intake with an electronically controlled damper.
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Right – Transfer grilles are installed over doorways to bedrooms in a new-construction home

Right – Transfer grilles are installed over doorways to bedrooms in a new-construction home
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Right – Transfer grilles, Jump ducts, and wall grilles provide passive returns for air returning from bedrooms to the central HVAC system

Right – Transfer grilles, Jump ducts, and wall grilles provide passive returns for air returning from bedrooms to the central HVAC system
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Right (decent): For a relatively high-capacity ccASHP sized per Approach 3 or 4 to meet nearly 100% of the heating load, this heat pump’s modulating zone has a decent overlap with the home’s heating load line, reducing short-cycling.

Right (decent): For a relatively high-capacity ccASHP sized per Approach 3 or 4 to meet nearly 100% of the heating load, this heat pump’s modulating zone has a decent overlap with the home’s heating load line, reducing short-cycling.
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Right: A blower door pressurizes the house during a duct leakage to outside test.

Right: A blower door pressurizes the house during a duct leakage to outside test.
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Right: A blower door pressurizes the house while a duct tester is connected to the duct system during a duct leakage to outside test.

Right: A blower door pressurizes the house while a duct tester is connected to the duct system during a duct leakage to outside test.
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Right: A well-constructed air handler closet

Right: A well-constructed air handler closet
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Right: Air seal all seams in the return air plenum before installing a new air handler

Right: Air seal all seams in the return air plenum before installing a new air handler
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Right: If existing straps are narrower than 1.5 inches, add sheet metal saddles to keep the duct from sagging and pinching

Right: If existing straps are narrower than 1.5 inches, add sheet metal saddles to keep the duct from sagging and pinching
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Right: If there are large gaps between the edges of the supply boot and the subfloor, add screws to close the gaps. Cover the seam with mesh tape and seal over the tape with mastic.

Right: If there are large gaps between the edges of the supply boot and the subfloor, add screws to close the gaps. Cover the seam with mesh tape and seal over the tape with mastic.
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Right: Refrigerant piping is sealed where it exits the return plenum

Right: Refrigerant piping is sealed where it exits the return plenum
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Right: Sized per Approach 1, this heat pump will have minimal short-cycling; since sized using Approach 1, it will require backup heat when temp is below 30°F but could still contribute significant heating down to heating design temp (-6°F) and lower

Right: Sized per Approach 1, this heat pump will have minimal short-cycling; since sized using Approach 1, it will require backup heat when temp is below 30°F but could still contribute significant heating down to heating design temp (-6°F) and lower
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Right: Sized per Approach 3 or 4, this heat pump’s modulating zone has a large overlap with the home’s heating load line, resulting in minimal short-cycling; the unit may require a small amount of backup heat during the very coldest hours of winter.

Right: Sized per Approach 3 or 4, this heat pump’s modulating zone has a large overlap with the home’s heating load line, resulting in minimal short-cycling; the unit may require a small amount of backup heat during the very coldest hours of winter.
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Right: Sized per Approach 3, this heat pump’s modulating zone has a large overlap with the home’s heating load line; it will require backup heating but could still contribute significant heating for all hours of the heating season

Right: Sized per Approach 3, this heat pump’s modulating zone has a large overlap with the home’s heating load line; it will require backup heating but could still contribute significant heating for all hours of the heating season
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Right: The bottom of the air handler cabinet is well sealed to the return platform

Right: The bottom of the air handler cabinet is well sealed to the return platform
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Right: The plenum liner is well sealed to the filter-backed grille

Right: The plenum liner is well sealed to the filter-backed grille
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Right: Use mastic to air seal the return air plenum and to seal around refrigerant lines coming from the slab in the floor of the return

Right: Use mastic to air seal the return air plenum and to seal around refrigerant lines coming from the slab in the floor of the return
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Roof supports for the awning that will cover the heat pump compressor are anchored through the siding into studs with long screws.

Roof supports for the awning that will cover the heat pump compressor are anchored through the siding into studs with long screws.
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Sample results from a total duct leakage test at final

Sample results from a total duct leakage test at final
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Sample results from a total duct leakage test at rough-in

Sample results from a total duct leakage test at rough-in