What Makes an AC Compressor Stop Working?

When the Florida heat is at its peak, the last thing you want is for your air conditioner to stop working. The AC compressor is at the heart of your cooling system, and when it malfunctions, it can bring your comfort to a grinding halt. At Best Value we understand how frustrating that can be, and we’re here to help you get to the bottom of the issue. Today we’ll look at why an air conditioner compressor might stop working and what you can do about it.

The AC compressor is at the core of the systems that help keep your home cool. It’s responsible for pressurizing the refrigerant and moving it through the system to remove heat from inside your home. Without it, your air conditioner wouldn’t be able to cool the air effectively. The compressor works alongside other components, like the condenser and evaporator coils, to ensure your home stays at a comfortable temperature. When it stops working, your entire HVAC system stops cooling.

There are several reasons why an AC compressor may stop working, and some are more common than others. One possibility is electrical failure, which can prevent the compressor from getting the power it needs. This might be due to a tripped breaker, damaged wiring, or a failing capacitor. Another common issue is refrigerant problems. Either too much or too little refrigerant can cause the compressor to overheat or shut down.

Dirt and debris can also play a role. If the coils are dirty, the system has to work harder to cool the air, putting extra strain on the compressor. Over time, this can lead to overheating and failure. Mechanical wear and tear is another culprit. Since the compressor is a mechanical component, it naturally experiences wear over time. If it hasn’t been maintained properly, the internal parts can wear out, leading to breakdowns.

How do you know if your AC unit’s compressor is failing? There are a few warning signs to watch for. One common issue is the AC compressor not turning on at all. If you hear your unit running but notice that no cool air is coming through the vents, the compressor may not be working. Another sign is loud noises—grinding, clanking, or rattling sounds can indicate mechanical failure. If the outdoor unit seems to be struggling or you notice circuit breakers tripping frequently, these could also be red flags.

Inconsistent cooling can also be a result of a malfunctioning split AC compressor. If some rooms are cooler than others or if the system cycles on and off more frequently than usual, the compressor might be struggling. Paying attention to these signs can help prevent a total breakdown and may save you from a costly repair.

If your home AC compressor stops working, you will want to address the problem immediately, for the sake of your HVAC system as well as your comfort. The first step is to check the basics. Make sure the thermostat is set correctly and check the circuit breaker to see if it has tripped. If the unit still isn’t working, it’s time to call in the professionals. At Best Value, we have experience diagnosing and repairing compressor issues, whether it’s an electrical problem, a refrigerant leak, or mechanical failure.



Attempting to fix a compressor issue on your own can lead to more damage, especially if the repair involves managing refrigerant. It’s always best to let trained professionals assess the situation and recommend the right course of action. In some cases, a repair may be possible, while in others, a AC replacement might be the better long-term solution.

When your AC unit compressor is giving you trouble, we’re here to help. We serve homeowners throughout Volusia and Flagler counties, providing expert repair and maintenance services to keep your air conditioning system running smoothly. Our team understands how important a reliable AC is in the Florida heat, and we work quickly to get your system back up and running. Whether your split AC compressor is not working, or your home AC compressor has stopped altogether, we have the knowledge and experience to diagnose the issue and provide effective solutions.

If your air conditioner isn’t cooling properly and you suspect a compressor issue, don’t wait until the problem gets worse. Contact us today for expert AC repair and maintenance services. We’re committed to keeping your home comfortable, no matter how hot it gets outside. We offer a Comfort Performance Inspection for first time customers. This service includes a 25-point precision inspection of your A/C and heating system. We have served Volusia and Flagler counties for over 20 years, committed to integrity and stellar service. We're proud veterans and members of Angie's list and the BBB with an A+ rating for excellent service. Give us a call and let us help you get your cooling system back in top shape!