Why Is Your Furnace Overheating?

Have you noticed that your furnace is making some weird noises? Or maybe it is putting off a burning smell? After doing one or both of these things, your furnace may just switch off altogether and you can't get it to come back on. These signs are indicative of an overheating system, which requires immediate professional attention. However, it is important to understand what may be causing the problem. Keep reading to learn more.

Reduced/Restricted Airflow

If the air is not able to circulate properly through your furnace because it is blocked, this can result in the furnace overheating. One of the most common reasons that the airflow is restricted is due to a dirty air filter. This is why you need to make sure that you are checking and changing the filter on a regular basis. It is recommended to do check it on a regular basis and change it when it is showing a build-up of dust and dirt. Routine filter changes can prevent this problem and keep you from having to pay for unnecessary repairs associated with reduced and/or restricted airflow due to a dirty air filter.

Filthy Components

There are many components of your furnace that will get dirty over time, including the furnace blower wheel, and in some cases, this can be due to a dirty filter. The AC coil can get plugged up with lint and dirt. In either instance, the heat exchanger will be unable to reject the heat and end up overheating. As such, an inspection of your furnace needs to be scheduled as soon as possible.

Short Cycling

If you notice that your furnace is shutting off far too soon during its heating cycle, this is known as short cycling. If this continues to happen, it can result in excess stress on the blower motor and heat exchanger. Unfortunately, it can result in overheating and possibly even the motor burning out or the heat exchanger failing. If you believe that short cycling is occurring, an inspection is necessary sooner rather than later.

In any of the aforementioned situations, if your furnace is left to continue overheating, it can result in an inconvenience for you and your family. It could lead to very disastrous events, including a household fire. Your furnace will need repairs, but in some instances, it may be beyond repair and require replacement. When you notice something amiss with your furnace, contact a furnace repair service immediately. They can provide additional information regarding gas furnace repairs.