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Furnace Not Heating? Here are Some Possible Causes

There is no worse feeling than when your furnace stops producing heat in the middle of a frigid winter day. If your furnace has stopped producing heat, it could be due to a number of causes. Eric Noack, Mr. December of our Men of ABC Calendar, is here to walk you through what could have gone wrong along with possible solutions:

Some of the possible causes of a furnace that no longer produces heat include:

An improperly adjusted thermostat

Everybody’s thermostat is different, but in most cases there will be a red light illuminated when the thermostat is in heat mode and is ready to heat the house. Setting your thermostat to a temperature above the current room temperature will turn the heat on.

The power to the furnace could be shut off

Another possibility is a loss of power to the furnace. Check your circuit breaker panel and make sure the power to the furnace is turned on. To do this, open the breaker panel cover and look at the listing to find the circuit that corresponds with the furnace. Then, make sure the lever is in the correct position.

The gas to the furnace could be shut off or the pilot light could be out

If your gas shut-off valve is perpendicular to the pipe, it means the gas is turned off. Turn the lever to the parallel position to turn the gas back on. If your gas furnace has a pilot light, it may have gone out. It is important to read the manufacturer’s instructions very carefully prior to checking the pilot light. Make sure the thermostat is turned all the way down and that the valve is facing ‘pilot’, which will set it up to be lit.

Knowing a little bit about your system is the best way to avoid breakdowns. If you are unsure about any of the aforementioned steps, please give the experts at ABC a call. We are more than happy to come to your home and provide assistance.

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  • “Have never had such an excellent technician to evaluate our furnace problem. If he hadn't been so thorough, it possibly could have resulted in a carbon monoxide disaster. A true professional!”

  • “After a long day on a Friday (first snow of the year - lots of customers without heat), Dion L came to perform routine furnace inspection and filter change. Dion was courteous, efficient, informed us of all that he was doing, showed us an area of concern and how we…”

  • “Ron S., fixed an electrical short in the attic, which prevented a fire. He rewired the attic thru the bedroom ceiling light. He replaced an outside electrical connection, and repaired my ceiling fan. The attic wiring was very crazy. He did an outstanding job figuring it out and fixing the…”

  • “I called other before I call ABC and was giving long wait and schedule time to come out and check the heating system. So I received a message on the web about ABC Plumbing and Heating. So I called the company right away and they said what time would you…”

  • “I am so impressed with Chris and ABC Plumbing, Heating, Cooling. His friendliness honest approach to his Job is remarkable. Thanks Chris for making my day and believing that they are still great honorable people out there.”

  • “Paul B. serviced my furnace yesterday with an inspection and cleaning. He didn't stop there though, I had purchased a new filter for my humidifier on the furnace and he replaced that for me, showed me how to do it in the future and explained how to adjust the humidity…”

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