How to Reset a Comfortmaker Furnace: 6 Simple Steps to Successfully Reset Your Comfortmaker Furnace

In modern homes, a high-efficiency natural gas furnace is commonly installed to help heat homes efficiently. The furnace has been steadily gaining popularity for its ability to heat homes more efficiently and reliably than other heating methods. A Comfortmaker furnace is one of the most popular brands of furnaces on the market today. Whether you’re upgrading from a different brand or model, or you’ve recently purchased an older home with a different brand of furnace, resetting your Comfortmaker furnace is essential for optimal performance. Resetting your Comfortmaker gas furnace will not only help you save on energy costs but also extend the life expectancy of the unit. These 6 simple steps will show you how to reset your Comfortmaker furnace quickly and easily.

Check for Blockages

If your furnace does not ignite or produce any heat, it may have a blockage. Before jumping straight to the reset, check that there are no blockages in your system. Your furnace has a series of rotating parts that help draw air into the system, ignite the burner, and feed warm air back into your home. If any of these parts are blocked by dust or debris, the furnace will not be able to function properly. Blocked air filters, ducts, and burners are the most common problems in furnaces. If you have a blocked air filter, you may notice a drop in the amount of heating power coming into your home. You may also notice increased noise during operation, as the system has to work harder to move air through the ducts. If you notice either of these issues, it’s time to change your filters. If your ducts are dusty or dirty, you should hire a professional to clean them out.

Purge the Burner Orifices

A Comfortmaker furnace uses air from the house to spark a gas flame inside the burner chamber. This opens up orifices inside the burner to create a burner ignition. Over time, these orifices can become clogged with dust and debris, which can interfere with the ignition process. If you’re having trouble resetting your furnace, you may need to purge the burner orifices. This will help ensure your furnace can draw air from the house to properly ignite the burner. To purge the burner orifices, turn your furnace on to the “no-heat” setting. This will allow you to open the burners without igniting the gas. Use a soft bristle brush to remove any debris stuck inside the orifices.

Reset the Electronic Control

There are a few different ways to reset your Comfortmaker furnace’s electronic control. If you’re resetting an older system that uses a red reset button, the easiest way to reset the control is to flick the circuit breaker for the furnace. If the control uses a digital system, you’ll need to open the control panel and press “clear” or “reset.” The exact button may vary depending on your system. If you’re having trouble resetting your furnace, try resetting the control again. There’s a chance the “clear” or “reset” button doesn’t work the first time.

Reset the Combustion Chamber

A furnace’s combustion chamber helps regulate airflow into the home while igniting the burners. Over time, this combustion chamber can build up with dust and debris, which can interfere with the process of igniting the burner. To reset the combustion chamber, turn your furnace on to the “no-heat” setting. Open the furnace’s air intake panel and use a soft bristle brush to remove any dust or debris from the combustion chamber. If you have an older gas furnace model with a combustion chamber, you may need to replace the combustion chamber altogether. Newer models use a flame sensor, which can be cleaned and reset more easily.

Check Your Filters and Vents

A dirty filter or faulty vent can cause your furnace to misfire, which can lead to frustrating errors like E-19 or E-38. If your furnace is misfiring, it’s likely due to one of two issues: dirty filters and faulty vents. You should change your filters once every 3 months (more frequently during heavy seasons). Over time, the filters can become blocked with dust, which can interfere with the furnace’s operation. A blocked filter will cause your furnace to misfire and shut down. To check your vents, look for blockages caused by fallen leaves, debris, or other objects. If you see any blockages, you can either clean them out or hire a professional to inspect the system and make repairs.

Reset the Electronic Control Again

Even after you’ve reset your furnace’s control and ensured there are no blockages in the system, the furnace may continue to misfire. If this is the case, we recommend resetting the control again. You can also do a complete 12-minute reset of your furnace and let it burn off any built-up pressure in the system. This will reset your furnace to its default settings and let it function optimally again.


A furnace is a complicated system, and it’s possible that resetting the control and letting it run for a short time doesn’t solve the issues. If this is the case, we recommend contacting an HVAC technician to help diagnose and fix the issue. Depending on the age and wear of the furnace, you may need to follow these resetting steps more than once per year. If you notice a drop in the amount of heating power coming into your home, it’s a good indication that your furnace could use a reset. When you understand the importance of resetting a gas furnace and how to go about doing it, you can save yourself a lot of time, money, and frustration by getting your furnace back up and running as quickly as possible.