4 Reasons Why Your Furnace is Throwing Your Circuit Breaker and How to Solve It

Tripped circuit breakers are annoying and stressful, especially if it seems like the furnace is the culprit. If your breaker gets thrown once and typical function starts after you reset it, there is no immediate cause for concern. In this case, an unrelated power surge is typically the cause. 

However, you can’t neglect the issue if the breaker flips again and again. This can happen with both electric and gas furnaces. After all, even gas-fired furnaces utilize electricity to run the blower motor and other pieces. Before you arrange furnace repair, review the most typical reasons your furnace might be throwing the circuit breaker and how you can prevent it. 

1. Overloaded Furnace 

Does your furnace run for a brief time before tripping the breaker? This can stem from restricted airflow. A dirty filter or closed air vents require your furnace to work harder. The increased electrical draw might overheat the system, strain the circuit and flip the breaker. Try these tips to restore steady airflow and resolve the problem: 

  • Swap out the air filter. 
  • Open all air registers and ensure none are blocked by furniture, curtains or rugs. 
  • Don’t place anything against the furnace or otherwise block airflow into it. 

2. Overloaded Circuit 

HVAC equipment should be on a dedicated circuit, but this may not be the case in older homes. Examine the labels on your electrical panel to find out if another appliance shares a circuit with your furnace. As an interim precaution, you can unplug the secondary item or avoid running it while the furnace is working. A safer, more permanent solution is to have an electrician install a new circuit for your HVAC system. 

3. Short Circuit or Ground Fault 

Does your furnace flip the circuit breaker immediately upon startup? This could be a result of an electrical problem in the furnace. An exposed wire could be shorting out the circuit when it brushes against a neutral wire or creates a ground fault if it comes into contact with a grounded wire or metal object. Either of these things can surge the electrical draw enough to flip the circuit. You’ll need an HVAC professional like Service Experts Heating, Air Conditioning & Plumbing to diagnose and resolve the trouble. 

4. Electrical Panel Issue 

If you exclude any problems with your furnace, the electrical panel could be to blame. Shaky connections or faulty breakers could lead to finicky performance. If you have an older house, you might need to have the panel replaced if it’s obsolete, damaged or inadequately installed. In this case, you need assistance from an electrician. 

Your furnace could continue to trip the circuit breaker in spite of your efforts to fix the issue by yourself. If this occurs, leave the furnace off and reach out to Service Experts Heating, Air Conditioning & Plumbing for help. Our HVAC Experts can help you find the problem and suggest the required repair. We’re confident in our service, so we back it with a 100% Satisfaction Guarantee for a year.* For more information about us, or to request furnace repair, reach us at 866-397-3787 right away. 

*Not applicable to the Advantage Program. See your signed Advantage Program Agreement for full details and exclusions. 100% Satisfaction Guarantee is subject to certain restrictions and limitations as set forth in the applicable Terms and Conditions. 

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