Latest / Cool Talk with Hartzell's | Your HVAC Questions, Answered!
Why Your Furnace Is Blowing Cold Air
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Your furnace is running, the fan is blowing, but the air coming out is cold and the house keeps getting colder. In this episode I walk through why that happens, in plain language, starting with the stuff you can check yourself. I cover the thermostat fan set to on instead of auto, a dirty filter tripping the furnace safety, the normal warm-up cycle, and ignition trouble like a flame sensor or pilot. I also explain the gas-safety side: if you ever smell gas, leave and call your gas company or 911, and why a cracked heat exchanger is a job for a trained tech. Call 405-375-4822…
The skinny
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