Your furnace should not struggle too much to keep your house warm. A furnace that struggles to do its work uses too much electricity, and experiences accelerated wear and tear. Both of these effects are bad for your pocket and the environment. Here are some of the things that can cause your furnace to overheat, and what you can do to fix the issues.
Air Leaks and Drafts
Gaps in your house can allow heated air to leak out of the house and cold air to draft into the house. This means your furnace will be heating extra cold air every minute of its operation. As a result, the furnace will run longer cycles than it would run if you didn't have air leaks.
Common areas of air leaks or drafts include small spaces around doors and window frames, uninstalled plumbing pipes, and malfunctioning skylights, among others. Ensure such areas are tightly sealed to prevent leaks and drafts.
A High-Temperature Setting
Whenever you set a temperature on the thermostat, the furnace runs until your house reaches the target temperature and then stops active cooling until the temperature falls. The higher the temperature setting is, the longer the furnace has to run to reach the target temperature.
Therefore, set the temperature at a reasonable level so that your furnace doesn't have to overwork. This is particularly true on extremely cold days. Besides, setting a high temperature doesn't lead to fast heating; your furnace produces heat at the same rate irrespective of the temperature setting. Therefore, don't be tempted to raise the thermostat to heat up the house fast when you come back to a cold house.
The furnace vents supply warm air to different parts of the house and also collect cold air to be channeled back to the furnace for heating. Therefore, your house won't get adequate heated air, and the furnace won't get adequate air to heat if the vents are blocked. The furnace will have to overwork to force the heated air to flow around the house and reach the temperature targeted by the thermostat. Pieces of furniture, furnishings, and vent dampers can all block these vents. In this case, the solution is simply to remove the item causing the blockage.
Dirt and Debris Accumulation
Lastly, your furnace can also overheat if it is clogged with dirt and debris. Dirt and debris is bad news for any part of the furnace, but the air filter and the coils will probably suffer the most. A dirty air filter restricts airflow, and dirty coils impede heat exchange. In both cases, the furnace has to overwork to heat up the house. Regular cleaning of the furnace and replacement of the air filter will take care of the problem.
To learn more, contact your local residential heating services.