Showing results 51 - 100 of 130
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Rater-measured ventilation rate is within 100-120% of HVAC contractor design value (2.11)
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Right - Each individual unit in this multifamily building has its own energy recovery ventilator (ERV) to provide balanced ventilation to the dwelling
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Right - The kitchen exhaust duct termination is integrated aesthetically and functionally with the exterior cladding; however, the opening should be screened to keep out pests.
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Right - This ceiling-mounted mini whole-house fan has built-in insulated covers to reduce heat loss when the fan is not in use
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Right - This kitchen exhaust duct termination is integrated aesthetically and functionally with the exterior cladding.
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Right - This manufacturer's label shows a CFM higher than the requirement, increasing the likelihood that it will meet the performance level once installed.
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Right – a booster fan was installed in this long dryer duct to increase air flow and help prevent the duct from being clogged with lint
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Right – Fan with a cleanly cut and properly sized hole has been air sealed to drywall
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Right – The exhaust fan duct is sealed to the fan with mastic and the fan opening is covered with cardboard to keep out dust during construction.
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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.
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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.
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Right – This exhaust fan duct is made of smooth rigid metal and the duct is mastic sealed at the joints.
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Right – This kitchen exhaust duct is made of smooth rigid metal and the duct is mastic sealed at joints
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Right – This kitchen exhaust fan duct is made of smooth round steel duct that takes the shortest, most direct route to the outdoors and joints are sealed with mastic.
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Right – This kitchen exhaust fan has a damper to prevent outside air from entering when the fan is not operating
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Some whole-house fans are equipped with an automatic drop-down cover to provide an air seal at the ceiling level when the fan is not in use
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Some whole-house fans use an automatic insulated cover achieve high R-values when the fan is not in use
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The blower wheel (fan) on this ductless wall-mounted indoor unit has accumulated dust and mold - a common issue for this design.
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The elevator shaft in this multistory multifamily building has an exhaust fan that maintains a slight negative pressure to control odors; there is also a smoke vent that is dampered closed during normal conditions.
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The ENERGY STAR logo on the manufacturer’s label indicates this is an ENERGY STAR qualifying exhaust fan
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The exhaust fan housing may have holes that allow conditioned air to leak into the attic
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The gap around this kitchen exhaust duct represents a significant source of air leakage to the unconditioned attic
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The manufacturer’s label found on this exhaust fan housing shows a sone rating of 1.0
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The polyethylene ceiling vapor barrier is sealed to form an air barrier around the exhaust fan in this very cold climate location (≥ CZ 6).
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The ventilation controller is next to the thermostat and has a manual override button
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These ERV/HRV configurations are NOT recommended because outdoor air can be sucked back into the ERV/HRV before being distributed to the living space
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This bath exhaust fan ventilation control can be set by the HVAC technician for continuous operation, delayed shut off, or a set amount of minutes each hour
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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
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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
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This whole house fan is suspended from rafters and connected to the intake grille by a curved insulated duct, greatly reducing vibration and noise in the occupied space
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This whole-house fan is suspended from rafters and connected to the intake grille by a curved acoustic duct, greatly reducing vibration and noise in the occupied space
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Vent the kitchen fan exhaust directly to the outside, not into an attic, crawlspace, or space between floors
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Wall controls operate the windows and fans allowing homeowners to capture prevailing breezes.
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