I have a large cold air return in my living room. This is near my front door which is not open very often (I dont know if this matters). Well my living room does not have a duct register currently and I am curious if 65" is too close to the cold air return for the placement of the duct register.
can you locate a regestir near a window? Thats where you'll find them typically. Thats where alot of your heat loss can be found. The tstat isnt located near this new proposed register location is it?