Both the furnace and the ac are not running although the display on the thermostat looks like it should be. I called Honeywell (the maker of the thermostat and they had me do a couple of tests and they said it was not the thermostat. Any suggestions?

Hi, All of sudden we felt cold today as temperature dropped. My wife increased the temp from thermostat but we didn't feel any difference and no hot air blowing from the vent. I went outside and found my A/C unit still running. Can some one help me. Last winter my furnace was running fine. The...

Hello: I have a Armstrong Air Ultra 5 Tex80 Furnace HoneyWell Gas Valve SV9520H8034 Ultra V Tech 80 Armstrong Air Mack GIN80AT075D12A-1 Serial #1602L21430 It has a smartVlave on it as well. I can't get it to start. The thermostats has been changed on it and I have jumped out R and W...

I have a colman 7900 series in a mobile home dated 1985 just purchased in Oct 07. The problem is the weather has been warm so shut furnnace off and noticed today the fan is running automatic, I do not want this as to save on electric bill... Do I have a problem and where does the switch need to be...

About a month ago I put in a new thermocoupler in my furnce and it's been working fine. This morning I woke up to no heat. I can re-light the pilot with no problems. The piot light keeps on burning if I don't turn the thermostat up to turn on the furnace. Then when I set the thermostat to 70...