Hi everyone. I’ll need your help, entirely new to this. I’m planning to replace our heat pump+indoor coils. The existing condenser is a 1981 (27 years old, YES 27!!!) Carrier Mod. 38RQ, air handler is Carrier FB4ANF036000ACAA, replaced in 1995 by previous owner. We live in CT, 1,400 SqFt Townhouse, 1981 built. Indoor unit is located in the (unfinished) basement. I don’t really care about SEER, but about BTU’s output at lower temperatures, and HSPF.
The contractor suggested the Carrier 25HPA530A30 heat pump, 16 SEER, and FE4AN(B,F)003+UI (Infinity Control), plus intelligent heat strip 5/10/15 Kw. (ARI# 1258714).
When I visited the ARI website I noticed Mod #25HPA530H30, 15 SEER, same coils (ARI#1125501) with better performance (HSPF, @47F, @17F) for colder temperatures.
Can anyone help? How can I buy the 25HPA530H30 with the better HSPF?
I called Carrier customer service, and they don’t know, the contractor doesn't know either.
PS: The contractor will do a HEAT GAIN calculation for sizing the condenser (2.5 or 3 ton). Is this the same as heat loss (Manual J)?
Thanks a lot to all of you that can help, and sorry for the long post...