Air conditioners need a reliable energy source to function correctly. They receive electricity through a connection to the circuit breakers on their properties. Unfortunately, if it seems like the air conditioner breaker is constantly tripping when it runs, you may wonder, “Why does my AC unit keep tripping the breaker?
Cooper’s Plumbing & Air has ample experience diagnosing and resolving HVAC breaker problems. Consult our guide to learn why the problem happens and how to recognize electrical issues within your air conditioning system.
What Is an Air Conditioning Circuit Breaker?
A circuit breaker helps minimize the risk of a circuit overload, which can damage connected electrical devices or cause an electrical fire. The system provides an automatic electrical shutoff that blocks extreme current from flowing through the circuit before it can cause significant problems.
Breaker panels can vary in size and amperage. Double-pole options are ideal for major appliances, such as air conditioners and furnaces, while smaller appliances benefit from single-pole circuit breakers.
So, how does it all work? Your air conditioner can only handle a certain amount of electricity. If it draws too much, it could trigger a power surge, which would then trip the breaker and cut power to the unit.
How To Find Your Circuit Breaker
To minimize the risk of AC failures, it’s good to know the location of your property’s circuit breaker. Every home is different.
The breaker may be part of your house’s primary electrical panel, which is the large metal box inside a closet, basement, or garage. It could also be attached to an exterior wall, with the breaker marked “HVAC” or “AC.”
If your cooling system trips the breaker, you can reset it. Locate your property’s panel and check the breaker. If you see a red or orange mark indicating a tripped breaker, you can flip the switch to turn the air conditioner back on.
Why Air Conditioners Trip Circuit Breakers: Top Six Reasons
If you’re wondering why your AC unit keeps tripping the breaker, below are the primary culprits behind this common issue.
1. Dirty Air Filter
One of the most common reasons air conditioner circuit breakers trip is a clogged air filter. The screen reduces the amount of airborne pollutants and allergens circulating through the HVAC system, so it gets dirty over time.
Unfortunately, a clogged filter restricts airflow, causing the system to consume more energy to compensate for the airflow loss. The extra energy consumption can cause the breaker to trip. Replacing the filter regularly helps prevent these problems.
2. Filthy or Blocked Condenser Unit
The outdoor condenser unit could also be the source of your electrical issue. If the unit gets too dirty or is blocked by plants, outdoor furniture, or other items, it won’t be able to disperse the heat absorbed from the indoor air. The system will keep running to dissipate the heat until the breaker trips.
3. Electrical Short
Your cooling unit’s electrical motor can overheat, causing the insulation around its wiring to melt. This problem creates another in the form of an electrical short, which can trip the breaker and trigger a fire.
4. Faulty Circuit Breaker
Sometimes, the circuit breaker is the problem, not the air conditioner. If the breaker sustains damage, loosens, or wears down, it won’t work correctly, resulting in frequent tripping.
5. Compressor Issues
The compressor is an essential component of the cooling system. It consumes a lot of energy when the unit starts up. Yet, as the component ages, it can wear down and require more power to operate, leading to breaker tripping.
6. Malfunctioning Blower Fan
The blower fan inside your air conditioner’s outdoor unit is essential for moving air through the system. It circulates air over the condenser coils, which helps facilitate the heat transfer process that cools your home.
Damage or blocked fan blades can cause your air conditioner’s coils to freeze and the compressor to overheat. The fan’s motor could also fail, affecting your air conditioner’s cooling performance and the breaker.
Warning Signs of Air Conditioning-Related Electrical Issues
The answer to “Why does my AC unit keep tripping the breaker?” varies. The same goes for the warning signs. If you notice one or more of the following symptoms with your air conditioner, it likely has an electrical issue:
- Uneven temperatures: Blocked airflow and inconsistent cooling may indicate a failing or faulty electrical system.
- Unusual noises: If your air conditioner’s electrical components malfunction or loosen, you may hear whistling, buzzing, or rattling noises whenever your system runs. An air conditioning tune-up may be necessary.
- Higher-than-usual energy bills: Electrical issues can cause your cooling system to consume more energy, leading to higher utility costs.
- Burning scents from the cooling unit: A common sign of electrical issues with an HVAC system is the smell of smoke or burnt plastic. This is an indicator of a serious problem that warrants immediate attention from an HVAC technician.
- Constant breaker tripping: A breaker tripping on occasion usually isn’t cause for concern because power surges happen all the time. However, if your breaker trips almost every time the air conditioner runs, the system has an underlying problem.
When it comes to electrical and HVAC problems, it’s better to err on the side of caution. If the tripped breaker won’t reset and conservative troubleshooting efforts, such as air filter replacements, fail, schedule a professional HVAC inspection. Your equipment may require emergency repairs to prevent a fire, explosion, or premature air conditioner failure.
Avoid a Circuit Overload With Your Cooling System
If you’re still asking, “Why does my AC unit keep tripping the breaker?” reach out to our experts at Cooper’s Plumbing & Air in Tallahassee, Florida. We have decades of experience addressing AC parts prone to breaking and resolving HVAC circuit breaker issues. Our specialists can identify, diagnose, and resolve problems ranging from faulty capacitors to airflow restrictions.
Don’t settle for an unsafe and unpredictable situation with an overloaded HVAC circuit breaker. Call Cooper’s Plumbing & Air today at (866) 464-7132 to request an appointment.