Hi, I live in a condo and have a Whalen Heat Pump. I changed the thermostat to a Noma digital programmable model (model # 52-255808) in the summer time. The A/C works well and the fan works well, but I did not test for heat as it was summer when I installed it. Well, now that the weather is...

I have a Janitrol A/C and heat pump system. I replaced the thermostat with a Lux T9000LC The A/C works fine, but the heater does not. I have it wired as follows: G - Green Y - Yellow W - White RH - Pink B -

I had a wall-mounted unit installed in a room in may of this summer. In the middle of the night the heat shut off and has not come back on since. It is an Amana, electric heat with heat pump unit. The cooling works, the heating setting does not blow air at all. When I remove the cover it says...

How do you change from Apollo gas heating system to electric heating system?

I have a heat pump with a two stage thermostat, 1st stage is heat pump, 2nd stage is electric (resistance) heat. Is it ever more economical to run the furnace with resistance heat only, not the heat pump? I know that the outdoor temperature affects the ability of the heat pump to work, but is...