Most Common Air Conditioner Parts That Need Repair

1. Capacitors

Capacitors are small, cylindrical components that play a big role in your air conditioning system. They store electrical energy and deliver it to the motors that power the compressor and fans. Essentially, capacitors provide the kick your system needs to start up and keep running.

Over time, capacitors can wear down due to constant use and high temperatures, especially in hotter climates. When a capacitor begins to fail, you might notice your AC has trouble starting, shuts off unexpectedly, or doesn't run at all. You might also hear a humming sound from the unit or notice intermittent cooling performance. Since a bad capacitor can prevent the entire system from operating, it’s one of the most common parts HVAC technicians are called to replace.

2. Contactors

The contactor is another essential electrical component that’s responsible for controlling the power flow to the compressor and condenser fan motor. When your thermostat signals the air conditioner to turn on, the contactor engages and sends voltage to these components, allowing the system to start cooling.

Contactors are mechanical parts, which means they wear out with use, especially during peak cooling seasons when the AC cycles on and off frequently. A faulty contactor might stick, preventing your unit from turning off or starting up properly. In some cases, it can cause the compressor or fan to short cycle or fail to respond altogether. Because this component plays a central role in AC operation, contactor issues are one of the top reasons homeowners schedule air conditioner repairs.

3. Evaporator Coils

Located inside the indoor air handler, evaporator coils are responsible for absorbing heat from the air in your home. As warm air passes over the coils, refrigerant inside absorbs the heat, leaving cooler air to be circulated back into your space.

However, these coils are prone to collecting dust, dirt, and debris, which can impede airflow and reduce efficiency. In more serious cases, poor airflow or low refrigerant levels can cause the coils to freeze. Corrosion and leaks are also common issues, particularly in older systems. When evaporator coils are compromised, the result is often warm air blowing from your vents, uneven cooling, or higher energy bills. Depending on the extent of the damage, coils may need to be cleaned, repaired, or fully replaced by a local HVAC company in Dallas, TX.

Contact Aire Serv For Air Conditioner Repair

Is your air conditioner blowing warm air instead of cool air? Do you hear unusual noises coming from your air conditioner? Is there weak or no airflow? You need to call a specialist to inspect your AC and offer professional recommendations.

Aire Serv is a top-rated HVAC company that takes pride in offering reliable services, including air conditioner installation, dryer vent cleaning, emergency AC repairs, indoor air quality, and many more. Our service professionals have years of experience under their belts and are well-equipped to get the job done right the first time. If your AC is acting up, do not hesitate to contact the team at Aire Serv.