Frequent Furnace Questions

Dec 17, 2021 | Blog, Furnace, Heating, HVAC, Maintenance, OH, Ohio, Washington Court House, WCH, Winter


Ohio homeowners should be ready for the cold and ever-changing weather. Keep in mind that your furnace works harder during the colder months. Curious how to make sure your furnace stays in five-star condition this winter season? Look no more! Your service professionals at Washington Court House Heating & Cooling put together the following list to help walk you through some of the most common issues that come up with furnaces. These are things you want to keep an eye and ear out for:

Why Does My Furnace Smell? 

Have you been smelling an unusual odor coming from your furnace? If you have, remember the first time a furnace is turned on for the winter, it can produce a slight smell. If you are still encountering smells after letting it run for a while, try checking the air filter. Air filters collect dust, pet hair, and other air pollutants that linger in the air. Therefore, if the filter is left unchanged and warm air is passing through it, a dirty filter might just be the answer to the unpleasant smells in your home. Natural gas leaks are another frequent issue for furnaces. So if you still have not pinpointed the problem, please give us a call!

Why Is My Furnace So Loud?

There are plenty of sounds your furnace can make. Don’t ignore those signals if you hear anything out of the regular. Your furnace is communicating with you, and you want to listen before the underlying issue takes over. Loud noises indicate various problems such as a bad belt or motor bearing, loose screws or debris, improper blower assembly, expanding ductwork, and leaky ductwork.

Why Does My Furnace Keep Turning Off?

If your furnace is in a state of constantly shutting off, don’t panic. This is a frequent issue we have come across. It is one you can typically fix by yourself. A common reason furnaces short cycle or turn on and off is due to clogged air filters. Dirty furnace filters will restrict airflow from reaching your heat exchanger, which then causes your furnace to overheat and shut off. If you have already changed out your filter to no avail, your thermostat is the next thing you want to check. If a thermostat is placed near a heat source like a heat register or sunlight, this tends to make the thermostat think the home is warmer than it is. Which then causes it to shut off earlier than it needs to.

Why Is My Furnace Blowing Cold Air? 

Getting only cold air from your furnace? The first thing you should investigate is the furnace’s fan setting! If it is set to “on,” that means the blower is running even if it does not produce warm air. You can fix this by switching the fan setting to “auto.” This will make the blower run only when it is producing warm air. Secondly, at the risk of sounding redundant here, and only because it rings true- check those air filters! A dirty filter could restrict the airflow from the furnace’s heat exchanger. This then forces the furnace to turn off and let the cold air build-up. The last thing you should check is the pilot light. It may have gone out and just needs to be relit.

Why Is My Thermostat Not Working? 

Your thermostat should be working in unity with your furnace. After all, a furnace cannot function properly if the thermostat isn’t not functioning properly. Unsure if your thermostat is working as it should? An excellent way to tell is if the fan is running continuously. You may have noticed that the fan never really shuts off.  If this is happening, it causes the thermostat to keep running. Check the thermostat setting and change it to “auto.”


Your service professionals at Washington Court House Heating & Cooling, want nothing more than to help keep you and your family safe and warm this winter. Furnace issues shouldn’t be ignored. If after going through these frequent questions, you are still experiencing problems, please give us a call so we can get you booked with one of our NATE-certified technicians today. 

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Call Washington Court House Heating & Cooling today at (740) 281-5312, or schedule an appointment online now by clicking here!

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