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  • Wall furnace won't come on by itself

    Feb.6.2012

    I have a wall furnace heater (heat only). I set my furnace to 70 degrees and it will not come on by itself. I have to turn it on manually. Do I need a need wall heater system?

    Sue, los angeles, CA

     If your wall furnace has to be turned on manually, it’s a good chance that the problem could be simply the thermostat. If so, that’s a problem that is pretty simple and quick to diagnose. I…

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  • Air handler blows and stops repeatedly

    Feb.6.2012

    My AC unit, whether cooling or heating, clicks at the thermostat like it is starting cycle when the temperature is reached to start. However, the air handler blows and stops, blows and stops continuously. The outside unit (compressor) does not start.

    tim, Phoenix, AZ

    A safety switch in the furnace typically is the cause of the air handler blowing and stopping like yours does. If something malfunctions during the ignition of the furnace,…

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