If you notice a constant burning smell or a humming noise, or if the furnace keeps shutting off before finishing a cycle, these are indications that your furnace is overheating. An overheating furnace problem may also stop the system to function altogether. Here are four reasons why you may be facing this issue.

1) Restricted Airflow

Reduced or restricted airflow is one of the most common causes of an overheating furnace. Due to lack of airflow, the internal components of the furnace can get too hot. This mainly happens when the air filter isn’t changed regularly. It is always advisable to check the air filter at least once a month and replace it as soon as you see signs of dirt or dust accumulation. Clean air filters ensure the furnace doesn’t overheat and operates smoothly. Apart from this, it is better to check the system vents to ensure they are free from blockages, as this also can restrict airflow and lead to overheating.

2) Unclean Internal Components

A dirty air filter can lead to unclean internal components. It causes the furnace blower wheel and other components to get grimy and dirty. This prevents the heat exchanger from moving heat, rejecting the heat to the air stream, causing an overheating situation. Getting your air filter replaced and cleaned can solve several internal problems; hence it shouldn’t be overlooked. Also, ensure checking your furnace’s blower fan is free from blockages or dirt.

3) Short Cycling

Short cycling is when the furnace turns on and off quickly or prematurely turns off before completing the heating cycle. When this happens repeatedly, it puts a strain on your furnace motors and prevents your home from warming up. This furnace problem can lead to overheating and burn out the motor entirely, leading to the heat exchanger’s failure. If you notice your system is facing this problem, it is advisable to get in touch with a professional at the earliest to reduce any further significant damage. 

4) Mechanical Failure

The fan blower and electrical wiring of your furnace system are subjected to a fair amount of stress. This can lead to failure of the components causing the furnace system to overheat due to inadequate circulation. Regular maintenance is often neglected, but it is best to undertake regular tune-ups of the entire system to ensure everything internally is working at its best productivity. 

5) System’s Lifespan

A furnace systems lifespan typically lasts between 15 to 20 years, provided you undertake regular maintenance. If your system is old and reaching the 15-year mark, it is best to check for new options rather than getting the old system rectified time and again. A furnace that overheats not just causes inconvenience but can also be a threat to you and your family. It can cause the leak of carbon monoxide, which adversely affects human health and can also be fatal. If your system is almost 15 years old or more, consider purchasing a new system as they are safe, fast, convenient and more efficient.

It is better to consider an expert when it comes to furnace problems. In Edmonton, we at Capital Plumbing and Heating provide quality and effective installation and maintenance services. You can be assured that your system is in good and reliable hands. Get in touch with us today!