Why has your furnace stopped working?

Remember our post about what to do if you air conditioner stops working? Well, this is the opposite scenario. Winter days can get very cold, so it’s great to have an idea of potential reasons why your furnace is refusing to heat your home. It can help speed up the repair process once the professional technician arrives.

  1. Check the thermostat – It may have reset if there was a recent power outage or the batteries need to be switched out (some thermostats require batteries to operate). Be sure to check the settings and ensure it is set to heat – if the temperature is set lower than the current indoor temp, the heater will not turn on.
  2. Take a look at the circuit breakers. If any of them are off, switch them on – only once! If this continues to be a problem, you need to call a professional.
  3. Some furnaces pull the humidity from the air and can drain. Check the condensate pan of your furnace. Once the pan is full, the unit should shut off, however, this can potentially overflow and cause issues within your home.
  4. Have you checked the pilot light? If the pilot light is out, the furnace will not turn on. When the gas or propane flow is interrupted, the light can turn off to avoid excess gas or propane entering your home. While you could relight the pilot light yourself (following manufacturer’s instructions), it’s better to call a professional technician to assist, as they can help find other problems. If your furnace still has a pilot light it would be even better to replace the furnace with a modern energy efficient model.

Please do not hesitate to give us a call if your ever notice anything functioning improperly or not at all in your entire HVAC system. All our technicians are NATE certificated and ready to assist! Give us a call at (877) 848-3300!