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Inspecting HVAC Systems Topics include heating, venting, and air conditioning inspections.

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Old 7/9/09, 9:08 PM
David C. Macy's Avatar
David C. Macy David C. Macy is offline
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Join Date: Jan 2004
Location: NE. OH
Posts: 2,555
Default Supply ventilation
Furnace was a Trane forced warm air manufactured in 1997. The furnace has a humidifier.

Return duct has a supply ventilation from the outdoors.

My question is in a cold climate like Cleveland is it really needed?

What advantages and disadvantages would this have. It does have a damper that can be closed or opened. There was no motorized damper.

Home is a 2 story colonial about 2500 sq. ft.
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