My law enforcement, retired friend wants to add air to his existing system. Two different estimates has him wondering, 1700 sq ft raised ranch.
1) put A coil on top of furnace in basement and use existing 4 inch ducts
Or 2) put unit in attic and re-duct down from there with 6 inch ducts.
Also not sure which is proper size condenser?
One contractor says you can't push enough air thru 4" the other says no problem? He doesn't know who to believe.
Your thoughts welcomed, thks.
1) put A coil on top of furnace in basement and use existing 4 inch ducts
Or 2) put unit in attic and re-duct down from there with 6 inch ducts.
Also not sure which is proper size condenser?
One contractor says you can't push enough air thru 4" the other says no problem? He doesn't know who to believe.
Your thoughts welcomed, thks.
Proper duct sizing
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