I have been in my home now for 6mths and my unit is brand new. During the day unit heats my home but at night when the temp has dropped it blows cool air and does not heat the home. What is wrong with it? My air conditioner works fine... it's just the heat.

I have a heat pump that was 3 years old in May. We went to change from heating to cooling about a month ago. I noticed later that it wasn't cooling. Checked and found it had tripped the breaker. Reset and instantly threw the breaker again. Called a friend that does A/C work on the side. We...

About a 10 year old "YORK High Performance" heat pump... The heat pump was set to Cool for my summer AC and usually has been working well. At noon on a warm day it stopped The element inside-blower with the freon (sp?) would not get cool and for short times heat up blowing warm air in an...

I know this is pretty basic--but my older Rheem Classic IX (in FL) seems to be operating fine--except it stopped heating and I think, cooling. It seems to be running fine, without any obvious leaking. It just blows the same cool air on either setting. Where should I start? Are there fuses to look...

I am buying a new Programmable thermostat for our church. What is difference between single stage and 3 heat-2 cool stage thermostats? Thanks