How Much Does It Cost to Replace an AC Compressor?
Compressor failure is one of the most devastating issues your air conditioner could experience because it can prevent all cooling. Replacement often isn’t cheap, especially if the system is out of warranty, as the compressor is one of the most important and complex components.
You’ll typically pay between $3,500 to $6,000 for a new compressor. However, spotting failure early may reduce these costs or prevent a full replacement from becoming necessary. To help with this, our guide outlines:
- What is an AC compressor, and why is it important?
- Common signs your AC compressor needs replacing
- Factors that affect the cost of replacing an AC compressor
- How much does an AC compressor replacement typically cost?
- When should you replace the entire unit?
Reading this guide will help you plan maintenance and limit the repairs your AC needs over its lifetime.
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What Is an AC Compressor, and Why Is It Important?
The compressor is often called the heart of an AC, and it really does have a lot in common with a heart because it pumps refrigerant through the entire system. This refrigerant transfers the heat from inside your home to the outdoors, leaving your space cool and comfortable. When your compressor fails, the refrigerant stops flowing and the cooling grinds to a halt with it.
Minor malfunctions may not completely stop your AC from working but can still impair its ability to cool your home. However, even if your compressor hasn’t failed, it’s best to repair it early, as full failure will cut all cooling. At that point, things can become much more costly because it may no longer be possible to salvage the component.
Common Signs Your AC Compressor Needs Replacing
Compressor failure can happen suddenly without any indications beforehand. However, there are usually telltale signs it’s about to happen, including strange noises.
The compressor is responsible for your AC’s low, steady hum, but a rattling or rumbling quality appears when the compressor is under strain. Squealing indicates severe pressure buildup, and start-up groans suggest the compressor motor is failing.
Another sign is loss of performance, as a faulty compressor impacts cooling efficiency. Complete failure will prevent any cooling, so the system may either only push out hot air or simply not turn on at all. Other common issues include your AC tripping your breaker frequently or the system short-cycling and shutting down repeatedly.
Signs of compressor failure are similar with both central and ductless air conditioners. However, if you have multiple indoor mini-splits running on a single outdoor unit and only one air handler stops working, this typically rules out compressor issues.
Factors That Affect the Cost of Replacing an AC Compressor
AC compressor replacement costs depend on several factors, including:
- System age. Older parts can be more expensive due to scarcity.
- Brand. Compressors from leading brands like Lennox are more readily available.
- Size. Larger air conditioners require larger and more expensive compressors than compact systems do.
- Labor costs. Some AC models are more complicated, and it can take longer to replace the compressor.
How Much Does an AC Compressor Replacement Typically Cost?
Compressor replacement costs vary widely, but you’ll typically pay between $3,500 to $6,000.
However, the type of compressor is another significant factor. Variable-speed compressors tend to cost more than single-stage components. You’ll know which your AC uses based on its specifications.
When Should You Replace the Entire Unit?
As a general rule, any repair, including compressor replacement, may not be worthwhile if it’ll cost 50% or more of the cost to replace your entire air conditioner. It may also be a better choice to replace your system if it’s already close to the end of its lifespan.
However, these rules don’t factor in whether your current AC fits your needs. A replacement system may offer better value for money if you need more cooling or want to take advantage of new variable inverter technology and smart thermostats.
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