Today I inspected a 59 year old Cape Cod house in NJ that has been completely renovated. 2 year old heater & A/C. The seller is now using the supply registers at the perimeter walls as air returns and installed supply vents on interior walls. Wouldn’t you think this house will be drafty?
I am big on the What’s and the why’s What are we installing another return I assume What was the size of the other return and what was the distance from the furnace to the basement Ya did not give me much to work with here.
Ya can only blow so much air into a bottle then its full ya gotta take some out. (Return air) is always the killer of a nice peice of equipment
What are you going to call out. I have seen a lot of Apartment type systems with all the outlets on the interior located within a fur down from a hall ceiling with the furnace installed in a hall closet. Installed a few in that manner my self. Yes you are correct it should have been on the exterior wall but the system as a whole is still functional
The furnace is in center of basement, 1,000 - 1,200 sq. ft. basement. (Electric furnace with Heat Pump). There is No return at basement, only supply at ceiling. With stairway to main level and door closed at top of stairs.
Electric upflow furnace in a 1k basement does not have the same cooling and heat load as the first level and no worry about CO and the return grill. One could place it any where in the basement I would not cut it into the side of the furnace to much return blower noise if there was a return duct visible in the basement anywhere that is where I would cut in a 10 inch X 10 inch grill you want more return from the first level than the basement install a grill with a damper that could be opened or closed as needed to balance
All the Army houses have the supplies on the inside wall. Yes they are very drafty at the windows. Only solution to solve the problem is vent supplies installed along the knee wall next to exterior. This is not as hard as people might think.
The returns are fine they run down the middle and into the basement.
What is always missing is good insulation between the side walls and the attic.
Returns on the outside wall will make it even more drafty.