I am a townhouse owner located in the Boston area. My HVAC system is a mismatched 2-ton Bryant heat pump with Fedders air handler. The air handler will not last the winter.
I bought HVAC-CALC to confirm my heat load, and then I asked my HVAC pro (a Bryant dealer) to propose a new heat pump with variable speed air handler, providing 13 SEER and 8+ HSPF. In this climate HSPF is more critical than SEER, but you must buy higher SEER in order to get higher HSPF.
The contractor reported back that only 10 SEER Bryant heat pumps are available now (no 13 SEER units in-stock before April 2006). VS air handlers are currently in stock. He offered the following choices:
1. First, install a new Bryant FV4BNF002 VS air handler now to match the current Bryant R-22 condenser. Then, in March/April swap out the R-22 condenser with a 13 SEER R-410a unit thus yielding 8 SEER.
2. Simply install a new 10-SEER R-22 condenser with VS air handler now, yielding an HSPF of about 6.9.
My only knowledge of HVAC comes from reading this forum, but I’m concerned that the first option might lead to R22-R410 cross-contamination. Should I be concerned? The 2nd option would solve the air handler problem but would lock in a lower efficiency system. Our electricity rates are high and rising 27% in January. Fossil fuels are not an alternative. Which alternative should I choose? Any insights would be appreciated.
Thanks for your help.
I bought HVAC-CALC to confirm my heat load, and then I asked my HVAC pro (a Bryant dealer) to propose a new heat pump with variable speed air handler, providing 13 SEER and 8+ HSPF. In this climate HSPF is more critical than SEER, but you must buy higher SEER in order to get higher HSPF.
The contractor reported back that only 10 SEER Bryant heat pumps are available now (no 13 SEER units in-stock before April 2006). VS air handlers are currently in stock. He offered the following choices:
1. First, install a new Bryant FV4BNF002 VS air handler now to match the current Bryant R-22 condenser. Then, in March/April swap out the R-22 condenser with a 13 SEER R-410a unit thus yielding 8 SEER.
2. Simply install a new 10-SEER R-22 condenser with VS air handler now, yielding an HSPF of about 6.9.
My only knowledge of HVAC comes from reading this forum, but I’m concerned that the first option might lead to R22-R410 cross-contamination. Should I be concerned? The 2nd option would solve the air handler problem but would lock in a lower efficiency system. Our electricity rates are high and rising 27% in January. Fossil fuels are not an alternative. Which alternative should I choose? Any insights would be appreciated.
Thanks for your help.