How To Know If Your AC Compressor Is Bad: A Guide for Lexington, KY, Residents

As the summer heat intensifies in Lexington, KY, the last thing you want is an air conditioner that fails to cool your home effectively. Recognizing the signs of a bad AC compressor can save you discomfort and reduce the risk of more costly repairs down the line.



Here at Watson Heating & Air, we understand the importance of a fully functional AC system. In this guide, we will explain how to know if your AC compressor is bad and when you should contact an air conditioning repair contractor in Lexington, KY.

What Is an AC Compressor?

An AC compressor is often described as the heart of your air conditioning system. It plays a pivotal role by circulating refrigerant needed for heat exchange through the coils of the unit, enabling your system to cool the air effectively. Without a functional compressor, the entire process of cooling your home is compromised.

Signs That Your AC Compressor Is Failing

Understanding how to know if your AC compressor is bad starts with learning the most common signs of a faulty compressor.

Unusual Noises

Strange sounds, such as rattling or banging, can be signs of compressor trouble. These noises often result from mechanical failures inside the compressor or loose hardware. For instance, a compressor with a damaged or worn bearing might emit a grinding or screeching noise, indicating a serious problem that requires immediate attention.

Difficulty Starting

Known as hard starting, this occurs when the compressor struggles to turn on and may shut off shortly after starting. This issue often stems from electrical problems within the unit, such as a failing capacitor or a damaged compressor motor. Such conditions put additional strain on your system, leading to potential system failures.

Warm Air Blowing

If your vents are expelling warm air instead of cool, this can be a direct symptom of compressor failure. The compressor is essential for pumping the refrigerant through the system, which is crucial for heat exchange. A malfunction can prevent the refrigerant from being adequately pressurized, leading to ineffective cooling and a warmer house.

Tripping Circuit Breaker

When the compressor is malfunctioning, it may cause your home's circuit breaker to trip repeatedly. This usually happens because the compressor is drawing more power than usual, possibly due to an internal short or an overheating condition. Frequent tripping is a sign that the compressor may be nearing the end of its lifecycle.

Reduced Airflow

Lower-than-normal airflow from your vents can suggest issues with the compressor's capacity to pressurize the refrigerant. This can occur when there are blockages or leaks in the system, or the compressor itself is failing to operate efficiently. Reduced airflow not only impacts your comfort but can also lead to higher energy bills as the system struggles to maintain the desired temperature.

Reasons for a Bad AC compressor

In addition to learning how to know if your AC compressor is bad, it's important to understand the potential causes, which could include any of the following:

• Age and Wear: Over time, the internal components of a compressor will wear out and decrease efficiency.
• Poor Maintenance: Lack of regular maintenance, such as changing air filters and checking refrigerant levels, can lead to compressor failure.
• Electrical Failures: Issues such as short circuits or damaged wiring can prematurely end a compressor's life.
• Inadequate Lubrication: Insufficient oil in the compressor can cause increased friction and overheating.

How To Fix AC Compressor Problems

Addressing a bad compressor involves several steps, often requiring professional assistance. Here’s what you can do:

• Check the Circuit Breaker: Always ensure that the AC unit's circuit breaker has not tripped. If it has, reset it and monitor if it trips again.
• Inspect the Air Filter: A clogged air filter can cause the compressor to overheat. Check and replace the filter if necessary.
• Call a Professional: For issues beyond basic troubleshooting, such as replacing a compressor or conducting in-depth repairs, it's crucial to hire a professional technician.

Remember, handling refrigerant and electrical components can be dangerous. Always rely on skilled professionals for these tasks.

Trust Watson Heating & Air To Keep Your Air Conditioner Blowing Cold Air in Lexington, KY

If you still want to learn how to know if your AC compressor is bad, contact our experts. At Watson Heating & Air, we prioritize your comfort and efficiency. 

If you're experiencing problems like a hissing sound or blowing warm air, give us a call at (859) 695-2989. We serve the entire Lexington, KY, area and are here to help with all your AC needs.