better homes and gardens february issue

5 Common Heater Issues You Can Solve at Home

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During the winter season, it's extremely frustrating — possibly even extremely uncomfortable — when your heater isn't working properly. As a homeowner, you sometimes need to know a few tips and tricks to help you fix common problems on your own. In some cases, a heater issue is something you can easily fix without calling an expert and handing over a fistful of money. Here are five common heater issues you can solve at home.

The Controls Are Not Working

If you're unable to adjust the thermostat to the right temperature, you may be dealing with faulty controls. In some cases, you can easily fix this problem by replacing the batteries. If this doesn't work, try resetting the thermostat by following the instruction guide provided by your manufacturer. (Look for it online if you can't find it.) If neither of these options work, check for tripped circuits in your electrical system. Finally, open the thermostat to see if there's a visible problem with the wiring. When all else fails, you may need to purchase a new thermostat.

Cold Air Is Coming Out of the Heater

If your heater is blowing cold air, check the temperature to make sure it's set correctly, and then alter some of the settings to see if there are any noticeable changes. If this doesn't work, the issue may be a dirty air filter, leaking ductwork, insufficient fuel (only on certain types of systems) or pilot light issues. Cleaning or replacing filters regularly helps you avoid filter problems. If you have a heating system that requires fuel replenishment, check the amount of fuel in the system to make sure it's sufficient, and check the pilot light for any issues. If these tips don't help you fix the problem or you have leaking ductwork, you may need to call an HVAC professional.

Furnace Fan Is Not Functioning

If your furnace is on and the fan isn't working, the first thing you should do is make sure the thermostat is at the right setting. Next, make sure dirt and dust aren't restricting proper airflow through the air filters. If they're dirty, clean or replace them to see if that fixes the problem. Check to make sure the circuit breakers are switched on, but only do this once, as repeatedly flipping this on and off could cause a fire.

The Heater Won't Shut Off

If your heater continues to blow hot air and won't stop running, make sure the thermostat is set to "auto" rather than "on." The "auto" setting automatically shuts off the thermostat once the set temperature is reached. It's also possible the wiring in the thermostat is damaged or broken, or you could have a malfunctioning furnace blower. Make sure the wires are installed correctly and not damaged. Then, reset the thermostat and try running the heating system once again. If the issue still isn't fixed, you may have to replace the thermostat.

Burning Smell from the Heater

If you having a burning smell or smoke coming from your heater, it's a definite sign your heating system is malfunctioning. Shut off the furnace and unplug it (if applicable) right away. If you leave it on, it could cause more problems and danger. If the smell is mild and merely unpleasant, it could be caused by dust buildup in the furnace or a dirty air filter. You can fix this by shutting off the power and cleaning the dust or blockage. It's always a smart choice to replace air filters periodically for the best performance.

It saves both time and money when you learn to fix common heater issues on your own. However, in some cases, you may need specialized, professional assistance provided by an HVAC specialist. As always, safety is important when making home repairs.