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Image:

Wrong – This ductwork is not sealed where the round duct is attached to the square duct riser

Wrong – This ductwork is not sealed where the round duct is attached to the square duct riser
Image:

Wrong – This exhaust duct extends far beyond what is needed to reach the roof; a short, straight, smooth rigid metal duct is best for exhaust ducts and exhausting to the soffit vent would be preferable.

Wrong – This exhaust duct extends far beyond what is needed to reach the roof; a short, straight, smooth rigid metal duct is best for exhaust ducts and exhausting to the soffit vent would be preferable.
Image:

Wrong – This fire damper is partly closed during a duct leakage test, resulting in an uneven pressure distribution and an inaccurate test result

Wrong – This fire damper is partly closed during a duct leakage test, resulting in an uneven pressure distribution and an inaccurate test result
Image:

Wrong – This kitchen exhaust is a recirculating model; kitchens should use exhaust fans that duct out through the roof to remove moisture and odors from the home

Wrong – This kitchen exhaust is a recirculating model; kitchens should use exhaust fans that duct out through the roof to remove moisture and odors from the home
Image:

Wrong – This second-story floor plan has red lines that indicate openings from the attic into the interstitial floor space

Wrong – This second-story floor plan has red lines that indicate openings from the attic into the interstitial floor space
Image:

Wrong –Best practice solid air barrier material was not used behind the shower surround.

Wrong –Best practice solid air barrier material was not used behind the shower surround.
Image:

Wrong--No insulation installed behind fireplace

Wrong--No insulation installed behind fireplace
Image:

Wrong: Single sided ventilation without at least two windows, wing walls, and predictable wind directions is ineffective for generating wind-driven crossflow.

Wrong: Single sided ventilation without at least two windows, wing walls, and predictable wind directions is ineffective for generating wind-driven crossflow.
Video:

Your Northern Home: Air Leakage/ Blower Door Test

Video:

Your Northern Home: Attics/Air leakage/Stack effect