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A triple-filtered energy recovery ventilator is installed with individual supply ducts to provide fresh air to each room.
A triple-filtered energy recovery ventilator is installed with individual supply ducts to provide fresh air to each room.
A triple-filtered energy recovery ventilator is installed with individual supply ducts to provide fresh air to each room.
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An energy recovery ventilator provides filtered fresh air to every room in the house.
An energy recovery ventilator provides filtered fresh air to every room in the house.
An energy recovery ventilator provides filtered fresh air to every room in the house.
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An in-line airflow station installed in rigid duct provides a location to measure ventilation airflow
An in-line airflow station installed in rigid duct provides a location to measure ventilation airflow
An in-line airflow station installed in rigid duct provides a location to measure ventilation airflow
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Fresh air intakes and exhaust vents are ducted to each unit in this multifamily building
Fresh air intakes and exhaust vents are ducted to each unit in this multifamily building
Fresh air intakes and exhaust vents are ducted to each unit in this multifamily building
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Louvers and jump ducts allow cross ventilation through rooms with closed doors
Louvers and jump ducts allow cross ventilation through rooms with closed doors
Louvers and jump ducts allow cross ventilation through rooms with closed doors
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Right - A heat recovery ventilator supplies all living spaces with fresh air while transferring heat for energy savings.
Right - A heat recovery ventilator supplies all living spaces with fresh air while transferring heat for energy savings.
Right - A heat recovery ventilator supplies all living spaces with fresh air while transferring heat for energy savings.
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Right - An in-line air flow testing station is installed in a straight section of smooth metal duct (red outline) to determine the air flow rate of a fresh air intake for a whole house ventilation system.
Right - An in-line air flow testing station is installed in a straight section of smooth metal duct (red outline) to determine the air flow rate of a fresh air intake for a whole house ventilation system.
Right - An in-line air flow testing station is installed in a straight section of smooth metal duct (red outline) to determine the air flow rate of a fresh air intake for a whole house ventilation system.
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Right - HVAC ducts should be well-supported with minimal bends and pinching.
Right - HVAC ducts should be well-supported with minimal bends and pinching.
Right - HVAC ducts should be well-supported with minimal bends and pinching.
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Right – A separately ducted HRV supplies fresh air to most rooms in the home.
Right – A separately ducted HRV supplies fresh air to most rooms in the home.
Right – A separately ducted HRV supplies fresh air to most rooms in the home.
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This Central Fan Integrated Supply (CFIS) duct is undersized and kinked, limiting required airflow This Central Fan Integrated Supply (CFIS) duct is undersized and kinked, limiting required airflow
This Central Fan Integrated Supply (CFIS) duct is undersized and kinked, limiting required airflow This Central Fan Integrated Supply (CFIS) duct is undersized and kinked, limiting required airflow
This Central Fan Integrated Supply (CFIS) duct is undersized and kinked, limiting required airflow This Central Fan Integrated Supply (CFIS) duct is undersized and kinked, limiting required airflow
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To measure air flow, a hole was made in this flex duct; a more accurate measurement could be taken if the duct material were rigid metal, not flex duct
To measure air flow, a hole was made in this flex duct; a more accurate measurement could be taken if the duct material were rigid metal, not flex duct
To measure air flow, a hole was made in this flex duct; a more accurate measurement could be taken if the duct material were rigid metal, not flex duct
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Ventilation air inlet is too close to exhaust outlet
Ventilation air inlet is too close to exhaust outlet
Ventilation air inlet is too close to exhaust outlet
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Ventilation air inlet is too close to exhaust outlet
Ventilation air inlet is too close to exhaust outlet
Ventilation air inlet is too close to exhaust outlet
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Ventilation air inlets ≥ 2 ft. above grade or roof deck in Climate Zones 1-3 or ≥ 4 ft. above grade or roof deck in Climate Zones 4-8 and not obstructed
Ventilation air inlets ≥ 2 ft. above grade or roof deck in Climate Zones 1-3 or ≥ 4 ft. above grade or roof deck in Climate Zones 4-8 and not obstructed
Ventilation air inlets ≥ 2 ft. above grade or roof deck in Climate Zones 1-3 or ≥ 4 ft. above grade or roof deck in Climate Zones 4-8 and not obstructed
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Ventilation air inlets located ≥10 ft. of stretched-string distance from known contamination sources such as stack, vent, exhaust hood, or vehicle exhaust
Ventilation air inlets located ≥10 ft. of stretched-string distance from known contamination sources such as stack, vent, exhaust hood, or vehicle exhaust
Ventilation air inlets located ≥10 ft. of stretched-string distance from known contamination sources such as stack, vent, exhaust hood, or vehicle exhaust
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Ventilation inlet does not terminate high enough above the roof deck
Ventilation inlet does not terminate high enough above the roof deck
Ventilation inlet does not terminate high enough above the roof deck
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Ventilation inlet is appropriately located above grade
Ventilation inlet is appropriately located above grade
Ventilation inlet is appropriately located above grade
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Ventilation inlet is greater than 10 ft. from known contamination source
Ventilation inlet is greater than 10 ft. from known contamination source
Ventilation inlet is greater than 10 ft. from known contamination source
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Ventilation inlet is greater than 10 ft. from known contamination source
Ventilation inlet is greater than 10 ft. from known contamination source
Ventilation inlet is greater than 10 ft. from known contamination source
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Ventilation inlet is not near any exhaust outlets/contamination sources and is at least 2 ft. above the roof deck
Ventilation inlet is not near any exhaust outlets/contamination sources and is at least 2 ft. above the roof deck
Ventilation inlet is not near any exhaust outlets/contamination sources and is at least 2 ft. above the roof deck
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Ventilation inlet is too close to exhaust outlets and does not extend at least 2 ft. above the roof deck
Ventilation inlet is too close to exhaust outlets and does not extend at least 2 ft. above the roof deck
Ventilation inlet is too close to exhaust outlets and does not extend at least 2 ft. above the roof deck
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Ventilation inlet is too close to the ground and is being blocked by the grass
Ventilation inlet is too close to the ground and is being blocked by the grass
Ventilation inlet is too close to the ground and is being blocked by the grass
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Wrong – A tear in the outer jacket of this duct shows where an in-line airflow measurement was made; the inner duct was not sealed and created a duct leak.
Wrong – A tear in the outer jacket of this duct shows where an in-line airflow measurement was made; the inner duct was not sealed and created a duct leak.
Wrong – A tear in the outer jacket of this duct shows where an in-line airflow measurement was made; the inner duct was not sealed and created a duct leak.
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Wrong – It is difficult to test the air flow in this fresh air intake duct due to poor access and inadequate length of straight duct to get an accurate in-line flow measurement.
Wrong – It is difficult to test the air flow in this fresh air intake duct due to poor access and inadequate length of straight duct to get an accurate in-line flow measurement.
Wrong – It is difficult to test the air flow in this fresh air intake duct due to poor access and inadequate length of straight duct to get an accurate in-line flow measurement.
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Wrong – the exhaust terminal for a clothes dryer should not be covered with a screen which could trap lint; instead, cover it with a hooded, louvered damper
Wrong – the exhaust terminal for a clothes dryer should not be covered with a screen which could trap lint; instead, cover it with a hooded, louvered damper
Wrong – the exhaust terminal for a clothes dryer should not be covered with a screen which could trap lint; instead, cover it with a hooded, louvered damper
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