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Saturday, April 13, 2024

4 Common Furnace Repair Problems And How To Fix Them

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Your furnace is how your house can provide you with a cozy and warm welcome even in extreme winter. However, the system of circulating warm air throughout your home can be demanding for your system. It means that you can expect gas or electric furnace issues to spring up again and again.

Although these sorts of issues and solutions are quite common, read this article to know the basic furnace repair problems and their solutions. These are some typical furnace troubles to know how and when to call an expert furnace repair technician who can provide you with easy solutions.

Squealing Noise From A Furnace 

Whistling furnaces signify a worn or slipped blower belt. If you’re quite mechanically inclined, you can probably handle this repair by yourself. 

But, If you can’t detect any damage to the belt, just try tightening it, but do not overdo it. Contrary, If you can notice wear and tear on the belt. Get a new one from a nearby home restoration store. Now, follow the instructions for replacing it in your owner’s guide. 

Furnace Is Not Blowing Air

If your furnace is not blowing air, there are some steps you will require to take. 

  • First, assure that the blower doesn’t contain debris and ensure your thermostat is adjusted to the proper temperature. 
  • Second, before you clean the air filter, look at the furnace circuit breakers to make sure of the supply of power. 
  • Last, if you cannot fix it on your own, just call in an HVAC expert.

Malfunctioning thermostat

In some situations, the problem with your furnace isn’t necessarily a problem with the furnace at all. In many cases, your thermostat perceives the temperature in your house. Based on that, it instructs the furnace when to begin a heating cycle.

When a thermostat is malfunctioning, it could detect a false temperature. Therefore, it makes your furnace either generate the heat you don’t require or stop generating heat when your room needs it. Moreover, your thermostat might also have an issue with the information it sends to the furnace. Lastly, these electrical systems can have problems at any time.

Following are the possible solutions to malfunctioning thermostats:

  • Make sure that your thermostat is in the right setting.
  • Replace the batteries.
  • Clean the thermostat.
  • Check and test wire connections and wires.

 Ignition Issues

For furnaces that have an electric ignitor, it’s worth checking the flame sensor’s condition. It is a crucial safety component of your furnace that shuts down the entire works when it perceives gas but no flames. When these flame sensors get dirty, they can’t detect the flames. Therefore, they unnecessarily shut down everything. To clean yours:

  • Switch off power to your furnace.
  • Close the valve of the gas supply. 
  • Take a ¼” hex-head screwdriver to remove the flame sensor carefully. The flame sensor is a thin metal rod placed at the burner assembly.
  • Rib the sensor gently with an emery board or fine-grit sandpaper.
  • Now, wipe up any remaining dirt with a paper towel. Then, replace the sensor.


By understanding common issues and ways to repair a furnace. You can understand how to look for a problem in your furnace and know what might be wrong with your furnace. Also, you can realise the significance of a continuous furnace maintenance program during the cold months and warm months likewise.
However, if you fail at understanding and solving the issue with your furnace, do not hesitate to call certified and licensed furnace repair specialists. They have the proper tool and experience to point out most furnace problems in a moment and repair it safely.


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