Circuit breakers are designed to be a built-in safety feature. Their whole job is to cut power automatically when something could cause overheating wires, damaged appliances, electrical fires, shocks or dangerous faults, etc. So, when a breaker trips, it is usually reacting to a very specific issue.
Below, this furnace repair company in Glencoe, Illinois is going to explain why your furnace keeps tripping the breaker.
One of the most common reasons homeowners call a furnace repair company in Glencoe, Illinois is the blower motor. The blower motor is the component that pushes warm air through your ductwork and into every room. And since it is constantly running when the furnace is on, it is also one of the hardest-working parts of the entire unit.
The issue is that when the blower motor starts wearing out or failing, it needs more power to do the same job. That naturally leads to higher electrical current draw and that is exactly what can cause your breaker to trip.
A few common reasons this happens:
Worn bearings: Bearings help the blower fan spin smoothly. But over time, they can wear down. When that happens, the motor must fight against friction just to keep the fan moving. The motor starts overheating and pulling more power than normal. Eventually, that overload can push the breaker past its limit.
A failing capacitor: Capacitors help the motor start up smoothly. When the capacitor fails, the motor can struggle to get going. You may even hear the system hum or hesitate before it starts. And because it is fighting to start, the motor draws more power than normal, again leading to overheating and breaker trips.
Wiring or electrical damage: Sometimes, it is the electrical path feeding the damage. Loose connections or even small areas of electrical arcing can create a fault. And in cases like that, the breaker may trip almost immediately after the furnace tries to start.
One common reason a furnace trips the breaker is restricted airflow. Most of the time, the problem is a dirty air filter.
When your filter is clogged with dust and dirt, air can’t flow through easily. And when airflow drops, your furnace starts running hotter than normal. That overheating can trigger safety issues, and it can also make parts like the blower motor work overtime just to push air through. So instead of running efficiently, the system is straining. And after a while, that extra stress can lead to breaker trips.
Another thing that can cause the same problem is blocked vents or return vents. If too many vents are closed or blocked by something, the furnace can’t circulate air properly. When that happens, the furnace could pull too much power, which can then cause the breaker to trip.
Sometimes the problem is the electrical supply feeding the furnace. A professional furnace repair company in Glencoe, Illinois will evaluate both the furnace components and the electrical conditions that support them. Loose wiring connections can generate heat and cause intermittent breaker trips. A short circuit can trip the breaker immediately when the furnace turns on.
In some cases, the breaker itself may be failing. Older panels or improperly sized breakers can cause repeated trips even if the furnace is not the true source of the fault. However, even if it is a breaker issue, it still needs to be addressed fast.
If your furnace trips the breaker, the safest next move is to shut the system off at the thermostat. You can reset the breaker one time, but only once. If it trips again, leave it off.
At that point, calling a furnace repair company is the best decision. A professional technician can pinpoint the real cause and restore reliable heat.
Does your furnace keep tripping the breaker? If so, and if you want to have it inspected by the best furnace repair company in Glencoe, Illinois, John J. Cahill Plumbing, Heating & Air Conditioning is the company to call. We can diagnose the issue quickly and complete the proper repairs. Contact us to schedule your service.