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Bartels Heating & Cooling Blog

Some Common Electric Problems That Affect ACs and Heat Pumps


Whether it’s the scorching heat of summer or the biting cold of winter, your air conditioner or heat pump works tirelessly to keep your home livable. However, like any other mechanical system, AC and heat pumps are susceptible to various issues, especially electrical problems. 

At Bartel’s Heating & Cooling, we’ve encountered our fair share of electrical issues affecting ACs and heat pumps. In this post, we’ll highlight some common electric problems and explain why attempting DIY repairs could do more harm than good—always look to pros for air conditioning and heat pump repair.

Faulty Capacitors

Capacitors are crucial components responsible for starting the motors in ACs and heat pumps. Over time, capacitors can weaken or fail due to continuous use, voltage fluctuations, or manufacturing defects. When a capacitor malfunctions, you may notice difficulty in starting the unit, frequent system cycling, or unusual noises. Attempting to replace capacitors without proper knowledge and equipment can result in electrical hazards or further damage to the system.

Defective Contactors

Contactors are electromechanical switches that control the flow of electricity to various components of the HVAC system. Continuous operation and environmental factors can cause contactors to wear out or develop faults. Symptoms of a faulty contactor include the AC or heat pump failing to turn on, intermittent operation, or the system shutting down unexpectedly. While replacing a contactor may seem straightforward, it requires expertise to ensure proper wiring and compatibility with the system.

Worn-Out Wiring

The electrical wiring connecting different components of your AC or heat pump can degrade over time due to exposure to heat, moisture, or pests. Frayed or damaged wires can disrupt the flow of electricity, leading to system malfunctions or even electrical fires. Identifying and repairing faulty wiring requires specialized tools and knowledge of electrical codes. Attempting DIY repairs without proper training can pose serious safety risks and may void your system’s warranty.

Tripped Circuit Breakers

Tripped circuit breakers are a common occurrence in homes with HVAC systems, especially during peak usage periods. A tripped breaker indicates an overload or short circuit in the electrical circuit, which could be caused by a variety of factors, including faulty components or inadequate wiring. While resetting a tripped breaker is a simple task, frequent tripping indicates an underlying issue that requires professional attention. Ignoring repeated breaker trips can lead to extensive damage to the HVAC system and pose a fire hazard.

Malfunctioning Thermostats

The thermostat serves as the control center for your HVAC system, regulating temperature settings and ensuring efficient operation. A malfunctioning thermostat can cause erratic temperature fluctuations, inadequate heating or cooling, or complete system failure. While replacing a thermostat may seem like a straightforward task, improper installation or wiring can damage the system and compromise performance. It’s essential to consult a qualified HVAC technician to diagnose and rectify thermostat issues effectively.

At Bartel’s Heating & Cooling, our team of certified technicians has the knowledge, experience, and tools to diagnose and resolve electrical issues efficiently and safely. Don’t gamble with the comfort and safety of your home—trust the experts for all your AC and heat pump repairs in Lebanon

Bartels Heating & Cooling has served Hamilton, OH Since 1973. Rely on us to help you keep your home cool during the summer with our AC and heat pump repair services. 

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