It's not too late to ask, as what I'm trying to do is get a handle on understanding what is happening.
My old system had a 33,000 BTUH condensing unit mated with a 36,000 BTUH coil w/ TXV. The coil dates from 1962, was a Bryant. The Carrier condensing unit was put in 1982 and was changed...
The supply ductwork off the furnace is bullheaded (19"x19") and has two taps, one at 7"x19" (.92sf) and one at 8"x14" (.77sf). The return to the unit is at 24"x30" (3.3sf) The duct runs are quite short, though.
I'm still a bit confused about the advantages of a larger coil in this situation...
It sounds like it is probably a good idea to get an oversized coil for this situation. A large coil will also have a lower pressure drop thru it and that is a good thing, given the ductwork is already undersized. My installing tech says the oversized coil will help me get the 3.5 tons out of...
I have a good handle on the cooling load of my home, 38,000BTUH-40,000BTUH. It is an older house with most likely undersized ductwork (designed for heating only, it is a forced air gas furnace). My choices were a 3 or 3 1/2 ton unit, I'm going with the 3 1/2. The Contractor is going to put in...
