I was going over the est. for two new Bryant A/C systems (one with zones) in my house after going with a zoned Bryant heat and A/C system for my mother's house. Both in NJ
With all the talk about heat pumps on the forum -- I was giving them a look. My house has radiant heat and I thought that it would be nice this time of year to be able to turn the HP on to take the chill out of the house in the morning - without turning on the radiant system. Since my mother's unit was just being ordered I figured I would just order the heat pump. Installer indicated no problem - just add the higher equipment cost.
My question -- when I looked at the Bryants (and then others) I noticed for a given size the HP in A/C mode are less efficient than straight A/C -- WHY?
PSE&G is my energy company -- they set a very high bar for the HP rebate. Very hard to hit - no problem with A/C. When you add up the lower Bryant rebate for HP systems, the lack of the energy company rebate and the cost of the heat pump -- the added cost vs actuall use time does not add up. You can buy a lot of natural gas.
My mother is in her 80's and I wondered about the HP temp -- I was just going to give it a try.
Why the lower SEER in A/C mode