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PRK Services, Inc. Blog

What Happens During Furnace Maintenance?


It’s that time of year again! You’ll want your furnace to be in good condition and ready to go as soon as you need it, so you need to get it prepared for winter. How do you do that? With furnace maintenance. When you make an appointment with a technician for furnace maintenance, they’ll take many steps to ensure your heating system is working perfectly. 


Your technician knows exactly what to look for, and they will take a very close look at all the components of your furnace. This includes inspecting the heat exchanger, which contains the combustion gasses and keeps them separate from the air you breathe. If it’s corroded or cracked, it becomes a carbon monoxide hazard, so this step is absolutely critical.

Your technician will also inspect the vent and air intake systems to ensure that they are clear and functioning properly, as well as the burner and the flame sensor, which makes sure that there is a flame before allowing gas to be released. The belts, which connect motors to the fans that disperse your warm air throughout your home, will also be checked for any tearing, cracking, or slipping out of position.


All components of your furnace will be thoroughly cleaned. Dirty components can affect your furnace in a wide variety of ways. For example, a dirty flame sensor may not be able to detect a flame and can prevent the furnace from starting up. If the blower fan or motor are dirty, they can heat up, triggering the system to shut down for safety or even getting so hot that the wiring in the motor fuses together. 


The blower motor’s amp draw will be tested, making sure it’s using the correct amount of electricity. The wiring will be tested, to ensure that there are no loose connections. The thermostat will be tested, so it can be recalibrated if necessary. And the safety controls will be tested so that you will know for sure that your furnace will not operate unsafely.


Moving parts cause friction, and if they’re not properly lubricated, the friction can be excessive, causing components to overheat and leading to significant wear and tear. With sufficient lubrication, moving parts will glide easily against one another, and these risks will be avoided.

Filter Replacement

Your technician will check your furnace’s air filter, clean it if possible, and replace it with a new one if necessary. But don’t imagine that once a year is sufficient! Cleaning your air filter is something you should be doing yourself throughout the heating season. If you have questions about furnace filter replacement in Denton, TX, your technician can give you clear instructions about how—and how often—to do it. In fact, a maintenance appointment is a perfect time to ask any questions you have about your furnace and how to get the most out of it.

Once your furnace has received a maintenance visit, it will be able to operate more efficiently, warm your home more effectively, and be significantly less likely to require repair during the coming winter. Make your appointment today!

Contact PRK Services, Inc. today for all your cooling and comfort needs.

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