Why is My Window Air Conditioner Tripping the Circuit Breaker?


If your window air conditioner keeps tripping a circuit breaker as you struggle to stay cool on a hot summer day, it will quickly become rather frustrating. This quick troubleshooting guide can help you determine the cause and find a safe, effective solution:

Possible Causes

1. The air conditioning unit may need repair or replacement, especially if you've tried using it in multiple locations and experienced this problem every time. Dirty or failing A/C components can sometimes trip breakers by increasing power consumption to unacceptable levels.

2. The combined demands of your air conditioner and other nearby equipment might have exceeded the electrical circuit's maximum amperage. Check your electrical panel and the appliance's instruction manual for details on power consumption, amp limits and the number of outlets on the same circuit.

Potential Solutions

Never try to defeat the purpose of a breaker panel. This could cause a fire or electrical shock. If the breaker keeps tripping, you must find a solution to the underlying problem rather than continually resetting it or tampering with the panel.

A. Try using a different outlet if possible. Another option is to unplug any nearby machines or electronics to avoid overloading the circuit. Switch the A/C unit to its "low" or "fan-only" mode; adjusting the thermostat probably won't help. Take the time to thoroughly clean the appliance and its filter.

B. Call a local electrician. He or she may need to upgrade the circuit breaker and wiring. Other possible solutions involve repairing the breaker or setting up a new dedicated circuit for the air conditioner. An electrician can also determine if your A/C unit is causing the problem.

C. Hire an HVAC professional to install a central air conditioning system. This equipment works more efficiently and quietly. You won't need to carry around heavy window A/C units anymore. A central air conditioner will also free up your windows and electrical outlets for other purposes.

At least one of these three options will rectify the problem, allowing you to remain comfortable and safe throughout the summer. After you find a solution, remember to maintain your cooling equipment on a regular basis to maximize its reliability and longevity.


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