5 Common Electrical Issues in Furnaces
During the cold days from fall to spring, it’s crucial that we can count on our furnaces to reliably keep our families warm. However, when furnaces start acting up, it's often an electrical issue causing the problem. At Air Controls, our local HVAC company provides expert furnace electrical repair in the greater Bozeman, MT area. Here are five common electrical problems in furnaces.
Faulty Thermostat
One of the most frequent electrical issues with furnaces is a malfunctioning thermostat. Symptoms may include temperature inaccuracies, unresponsive controls, or intermittent heating. Check for loose wiring, dead batteries, or dust accumulation in the thermostat. If issues persist, a professional technician can assess and repair or replace the thermostat.
Blown Fuses
Blown fuses can interrupt the power supply to your furnace, leaving you in the cold. Fuses may blow due to power surges or an overloaded circuit. It’s important to identify the responsible fuse and replace it as necessary.
Defective Capacitors
Capacitors play a crucial role in the startup of your furnace's blower motor. As they age, these components can weaken or fail, causing the motor to struggle or not start at all. If you hear humming sounds but your furnace isn't kicking in, a faulty capacitor may be the culprit. A professional HVAC technician can test and replace the capacitor, ensuring optimal performance.
Worn-out Wiring
Exposure to heat and constant use can lead to wear and tear on your furnace's wiring. Frayed or damaged wires can cause short circuits, leading to a loss of power or even potential fire hazards. Any compromised wires should be replaced immediately.
Ignition Control Issues
For gas furnaces, ignition control problems can hamper the heating process. Faulty ignition controls may result in the pilot light not staying lit or difficulties igniting the burner. During an inspection, the HVAC technician can identify faulty components and replace them as necessary.
Furnace Repair in Bozeman, MT
When you need heating system service in Bozeman and the surrounding area, contact Air Controls at (406) 587-6292. Our nearby HVAC company can expertly handle your home’s heating and cooling needs. Feel free to give us a call today to schedule an appointment!




