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What to do When the Heat Isn't Working?



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If your heat is not working, the first thing to do if figure out why. In most cases, the cause of a furnace heating system not working is actually due to the thermostat not working or a blown fuse, and not a problem with the furnace itself.

Follow these steps to get to the source of the problem:

  • Make sure your thermostat is set to heat mode.
  • If your thermostat runs on batteries, it could be that the batteries are weak. Try changing the batteries to see if it helps.
  • Check that the circuit breaker is on and that the fuse for the furnace has not blown.
  • Be sure the furnace's power switch is turned on. It is usually located next to or inside the furnace cabinet. If it isn't on, turn it on and wait for the furnace to start up.
  • The motor in your furnace may need to be reset if it was overloaded. There should be a reset button near the motor. Press the button. If nothing happens, wait a half hour andtry again.
  • Turn off the power to the furnace at the main electrical panel or sub-panel. Look for a fuse on the power switch. If there is one, it may have blown and you should change it by following the manufacturer's instruction manual.

If your heat is still not working, then you will probably need to have an HVAC contractor come out and check it.



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