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Reasons Why Your Heater Won’t Turn On


There are few things more disconcerting on a cold winter’s day in New City, NY, than turning on your heater, only to have nothing happen when you do. A furnace that fails to turn on leaves no doubt as to whether it’s a problem, but the question becomes whether you should fix it yourself or call in a repair service. The problems you can solve yourself only take a few minutes to check. If they don’t work, you’re likely obligated to call in a repair service. Here are a few reasons why:

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  • Electrical Overload. An overload in the furnace itself will lead to a shutdown, in which case you need a repair service. But it might be outside the system, which likely triggered the circuit breaker. Always check your circuit breaker before calling in a service.
  • Thermostat Troubles. If the thermostat is malfunctioning, you won’t be able to turn on the heat. It also won’t turn on if the thermostat has been mis-programmed or otherwise placed on the wrong settings. Check the thermostat first to confirm these kinds of issues.
  • Gas Leaks. If something in your furnace is damaged, it could leak carbon monoxide gas, as well as gas from the fuel line.  Most furnaces have safety switches that shut the whole thing down and keeping your home safe. But it still needs to be fixed before the system will run again.
  • Faulty Ignition. The ignition switch in modern furnaces is electrical, though older systems still use pilot lights. Either way, if they run into trouble, the furnace won’t work until you fix the issue.
  • Broken Fan Motor. If there’s trouble with the blower system, then the fan won’t run and the hot air will just sit there. (This can seem like the system isn’t turning on, since it won’t make much of a sound.) A trained technician can correct the issue.

If your heater won’t turn on, call the pros at Design Air, Inc. to help!