Is This Strange Or What?
I just replaced my air handler and heat pump. The HP is a 19 SEER. I live in Charlotte. The last few nights have gotten really cold for here.
The HP is not kicking into auxilary mode until about 26 or 27 degrees. This has been the case now 3 or4 times. The house is still comfortable as far as heat is concerned. The temp. setting is being held. What is really strange is that at 26 degrees, the auxilary heat was not on. Then when the temp climbed to 27, the auxilary kicked in. At 28, it kicked back off.
It is a two stage compressor and a variable blower. Is it not kicking into auxilary mode because it has such a high efficiency rating? I was always told that they should kick over at about 30 - 35 degrees. I have put a call into the guy that installed it for his take.