Why Does My Furnace Keep Blowing Fuses?

Apr 2, 2021 | Blog, Furnace, Heating, HVAC | 0 comments

Because blown fuses are usually minor issues that are easy to fix, it can be tempting to ignore the problem if your furnace is repeatedly blowing a fuse. However, blown fuses can be tell-tale signs that there is an underlying problem with your furnace. Often, issues like this are something that needs to be addressed as soon as possible. To help our customers identify some common causes for blown fuses, we at Springboro Heating & Cooling put together a list of things that could be wrong with your unit and your fuses: 

Short Circuits or Damaged Wires 

Most reasons a furnace might be blowing fuses are due to wire damage. If the wires in your system are loose (which can cause them to be poorly connected) it can cause your furnace to short circuit. While inspecting the wiring in your furnace should be handled by a professional, you can check and see if there is any visible wire damage in your thermostat or in your furnace.  

Dust Buildup In FIlters 

Depending on the size of both your home and the type of furnace you own, you should be replacing your furnace filter every one to three months. Leaving your filter neglected can result in debris, dirt, and dust build up within your unit, which can lead to a clogged blower motor. This can cause your HVAC system to shut down completely or blow a fuse. Blowing a fuse due to dust build up is a serious fire hazard. This is because while your blower motor is struggling to keep up, the fuse is attempting to run, making things very hot. Wires, parts, and materials can overheat resulting in a furnace fire. So for the safety of your family, be sure to make replacing your furnace filter a habit! 

Thermostat Malfunctioning 

If you’ve noticed that your thermostat is hanging loosely on your wall, has shut off, or won’t respond, then there is most likely an electrical problem within the system. Any of these problems can cause a blown fuse. Repairs and maintenance should be handled by a professional.

Have Additional Questions About Your Furnace’s Fuses?

Addressing electrical issues can be daunting if you aren’t familiar with HVAC maintenance. That’s why we at Springboro Heating & Cooling are here to answer any questions you may have. We know that blown fuses caused by your furnace should be addressed quickly, which is why we are here to offer speedy, professional maintenance 24/7! You can schedule an appointment by calling us, or you do so online by clicking here!