Thanks HK,
One of the returns in the bonus room runs from the cold air (CA) plenum in the basement through 6in round duct (insulated). Extending additional cold air duct from the basement CA plenum is going to be very difficult (finished walls and ceilings everywhere). I am wondering if the 6" round return duct could support additional return lines/grill(s) or is it a dimishing situation where the 6in duct is the limiting factor on return air flow and not the 4 by 10 grill. I estimate the 6in run is about 30 feet long with four 90s in it.
How about a duct booster fan used in reverse on 6 in round CA return duct to boost performance? Crazy maybe but the alterntive to get to the plenum is really ugly.
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Member Since
05/12/2008
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