No Heat? Here's What to Check No Heat From Furnace

A home's heating system can experience problems any time of year, but issues usually occur when the furnace is first turned on at the beginning of the heating season, or when it's under high demand during a Minnesota deep freeze.

If your gas furnace isn't turning on, or isn't producing any heat, there are a few things your can check before calling Rapid Response for service:

  1. Check That the Power Is On - Even though your furnace may be gas powered, it still requires electricity for ignition and to operate the blower and controls. First, check the power to the unit at the circuit breaker panel. If a circuit is tripped, switch it back to the ON position. If the circuit trips again, DO NOT RESET IT MORE THAN ONCE. A circuit breaker is a safety device that's designed to prevent an electrical fire in the event of a malfunction. Have the unit inspected to identify the cause of the tripped breaker.
  2. Check the Thermostat Is Turned To the HEAT Position. Try turning the temperature up a few more degrees for testing purposes. Sometimes the ambient room temperature or location of the thermostat are causing the air to be warmer than the set temperature.
  3. Check the Furnace/AC Condensate Pan - During normal operation water will drain from the air conditioner or furnace into a drain pan. If the drain for the pan is clogged, it will fill up and activate a float switch, which will prevent the operation of the furnace or AC. If the float switch is up (activated), you will need to clear the obstruction to allow water to empty and then reset the switch.
  4. Check the Furnace Filter. An excessively dirty or clogged filter will cause the furnace overheat, which will cause it to shut down as a safety precaution. Install a new filter to correct the problem.
  5. Check the Pilot Light. This only applies to older gas furnaces. Most newer units have electric ignition. If your pilot light is out consult your owner's manual for the correct way to light the pilot.
  6. Check the Fuel Supply. If there are other gas appliances in the home, such a gas range or fireplace, check that they are functioning. If they are not working either, contact your utility company to check the gas supply.

If none of the above steps works and the furnace still won't turn on, call Rapid Response for service. We'll get your heat back on FAST.

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