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This bathroom exhaust fan includes a fan and light

This bathroom exhaust fan includes a fan and light
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This bathroom exhaust fan needs to be cleaned

This bathroom exhaust fan needs to be cleaned
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This central ventilation system uses an energy recovery ventilator to supply air to the corridor and exhaust air from the elevator shaft of a multifamily building

This central ventilation system uses an energy recovery ventilator to supply air to the corridor and exhaust air from the elevator shaft of a multifamily building
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This central ventilation system uses an energy recovery ventilator, pre-conditioning unit, and elevator shaft exhaust fan to supply air to dwelling units and corridors and to exhaust air from units and the elevator shaft in a multifamily building

This central ventilation system uses an energy recovery ventilator, pre-conditioning unit, and elevator shaft exhaust fan to supply air to dwelling units and corridors and to exhaust air from units and the elevator shaft in a multifamily building
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This down-draft range hood fan pulls kitchen particles, smoke, steam, and odors out of the home

This down-draft range hood fan pulls kitchen particles, smoke, steam, and odors out of the home
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This ducted, wall-mounted range hood exhaust fan replaced a recirculating fan that did not adequately remove kitchen contaminants.

This ducted, wall-mounted range hood exhaust fan replaced a recirculating fan that did not adequately remove kitchen contaminants.
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This energy recovery ventilator (ERV) provides balanced ventilation to a dwelling unit in a multifamily building

This energy recovery ventilator (ERV) provides balanced ventilation to a dwelling unit in a multifamily building
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This exhaust fan duct opens into the attic rather than exiting through the roof and mold has begun to form on the underside of the deck sheathing and on the rafter due to the moist air exiting the duct

This exhaust fan duct opens into the attic rather than exiting through the roof and mold has begun to form on the underside of the deck sheathing and on the rafter due to the moist air exiting the duct
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This exterior insulated slab-on-grade monolithic grade beam foundation is protected from pests by termite shield at the sill plate, borate-treated framing, flashing at end of wall insulation, brick veneer over slab-edge insulation, and rock ground cover.

This exterior insulated slab-on-grade monolithic grade beam foundation is protected from pests by termite shield at the sill plate, borate-treated framing, flashing at end of wall insulation, brick veneer over slab-edge insulation, and rock ground cover.
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This exterior vent has a louvered flap that opens when the bathroom exhaust fan is running and air is being exhausted outside

This exterior vent has a louvered flap that opens when the bathroom exhaust fan is running and air is being exhausted outside
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This exterior vent has a louvered flap that should close fully when the exhaust fan is turned off

This exterior vent has a louvered flap that should close fully when the exhaust fan is turned off
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This exterior vent has a single flap that opens when the bathroom exhaust fan is running and air is being exhausted outside

This exterior vent has a single flap that opens when the bathroom exhaust fan is running and air is being exhausted outside
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This fan has noticeable gaps between the fan box and the drywall that will need to be sealed with spray foam or caulk

This fan has noticeable gaps between the fan box and the drywall that will need to be sealed with spray foam or caulk
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This fan was inserted into a cleanly cut hole in the ceiling so there is only a very narrow gap around the edges of the fan box that needs to be caulked or taped

This fan was inserted into a cleanly cut hole in the ceiling so there is only a very narrow gap around the edges of the fan box that needs to be caulked or taped
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This foundation/floor/SIP wall detail shows recommended support of SIP wall panel at the sill plate

This foundation/floor/SIP wall detail shows recommended support of SIP wall panel at the sill plate
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This hood covers an exhaust vent for a bath fan exterior vent; this hood is improperly installed and the top does not lap under the siding so water can easily get behind it

This hood covers an exhaust vent for a bath fan exterior vent; this hood is improperly installed and the top does not lap under the siding so water can easily get behind it
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This HRV, installed in a conditioned attic, provides balanced ventilation to the whole home

This HRV, installed in a conditioned attic, provides balanced ventilation to the whole home
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This installation manual shows the model number of the replacement disposable filters for an exhaust fan

This installation manual shows the model number of the replacement disposable filters for an exhaust fan
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This is the ceiling vent for a basic bathroom exhaust fan

This is the ceiling vent for a basic bathroom exhaust fan
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This kneewall has no top plate and the resulting gap provides a wide-open pathway for air and vapor to travel between the living space and the attic

This kneewall has no top plate and the resulting gap provides a wide-open pathway for air and vapor to travel between the living space and the attic
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This narrow bottle brush was an effective tool for removing the debris between the blades of this bathroom exhaust fan

This narrow bottle brush was an effective tool for removing the debris between the blades of this bathroom exhaust fan
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This plan view of a multifamily building shows how a leaky central exhaust system can create negative pressure zones, pulling unconditioned outside air or humid inside air into the service shaft and wall cavities

This plan view of a multifamily building shows how a leaky central exhaust system can create negative pressure zones, pulling unconditioned outside air or humid inside air into the service shaft and wall cavities
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This technique for installing electrical wiring avoids the need to cut into the SIP panel

This technique for installing electrical wiring avoids the need to cut into the SIP panel
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This traditional whole-house fan uses uninsulated gravity dampers.

This traditional whole-house fan uses uninsulated gravity dampers.