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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.
Presentation:

Sales & Marketing of the Ultimate Z.E.N Home

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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
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Seal all joints and seams in the metal ductwork with mastic before installing insulation

Seal all joints and seams in the metal ductwork with mastic before installing insulation
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Seal seams in fiber board ducts with out-clinching staples, UL-181A-approved tape, and mastic

Seal seams in fiber board ducts with out-clinching staples, UL-181A-approved tape, and mastic
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Seams are being properly sealed with mastic and mesh tape

Seams are being properly sealed with mastic and mesh tape
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See the printing on the cardboard frame of the air filter for the filter dimensions and the arrow indicating airflow direction; the arrow should point into the duct.

See the printing on the cardboard frame of the air filter for the filter dimensions and the arrow indicating airflow direction; the arrow should point into the duct.
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Separate exhaust fans can share a common exhaust if each exhaust fan is equipped with a back-draft damper to prevent cross contamination

Separate exhaust fans can share a common exhaust if each exhaust fan is equipped with a back-draft damper to prevent cross contamination
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Seperate dwellings with their own seperate exhaust terminations

Seperate dwellings with their own seperate exhaust terminations
Case Study:

Show Home Targets Energy Efficiency in Hot-Humid Climates

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Show potential buyers your energy-efficient features with cut-aways and side-by-side displays (Source: Tommy Williams Homes).

Show potential buyers your energy-efficient features with cut-aways and side-by-side displays (Source: Tommy Williams Homes).
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Simplified schematic of a one-pipe steam system showing the main and risers with fast vents and the radiators with slow vents

Simplified schematic of a one-pipe steam system showing the main and risers with fast vents and the radiators with slow vents