Two of the most common causes of electric furnace or heat pump failure are blown fuses and frequently tripping circuit breakers. In today’s post, local HVAC contractor AC & Refrigeration Works shares some of the common causes of these issues and what you can do to prevent them.

hvac electrical fuse replacement

Dirt — You need to make sure that your heating system is properly maintained. Clogged air filters, for instance, may allow dust and dirt to migrate to areas where they can impede your heating system’s operation. Dust in the blower motor would be like grit in the gearworks, and can result in overheating and increased strain on the HVAC system, leading to an electrical overload. Keeping up with scheduled maintenance can help prevent this from happening.

Wiring problems — If your heating system is well-maintained but keeps tripping the breaker or blowing a fuse, this could be a problem with the electrical wiring. Before you resort to a DIY solution, keep in mind that unauthorized repairs are hazardous and may void your HVAC system’s warranty coverage. Unless you’re a licensed electrician yourself, it’s best to leave electrical and air conditioning repair to the pros.

Worn-out parts — Modern heating systems have components that can detect problems with certain components. Old electric furnaces, on the other hand, are less sophisticated, which means worn-out parts that cause electrical failure can be hard to identify. You may hear noises coming from the furnace, which can indicate problems with the transformer, blower motor or starting capacitor. As with wiring problems, identifying and replacing worn-out parts are best left to licensed professionals. If your furnace is far too old to have warranty coverage, consider replacing it with a more efficient option.

An undersized heating system — The heating system may be too small for the space it’s trying to heat, which means it would be redlining all the time just to provide basic heating, resulting in frequent electrical overload. This is sometimes due to a miscalculation by an inexperienced HVAC technician, or perhaps the homeowner kept the same HVAC system after having a home addition installed. Either way, the solution would be to replace the heating system with a different one with a higher capacity.

If you have questions related to HVAC systems or indoor air quality, call AC & Refrigeration Works at (956) 255-7227. You can also fill out our contact form to schedule an appointment.