How Do You Replace an AC Compressor?

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With HVAC units playing an essential role in our lives, it makes total sense trying to understand how they operate and most importantly, being well versed with installing and replacing an AC compressor. An AC Compressor basically serves as an integral component of your air conditioning system by ensuring a consistent flow of refrigerant gas. Over time, your AC Compressor is bound to fail due to wear and tear and experiencing fluctuating air conditioning should be a tell-tale sign that everything isn’t well.

Not only that, but uncharacteristically high sounds coupled with chattering bearings are also a major indicator that your AC compressor needs urgent replacement. Before forking out your hard-earned money, here are a few pointers that you need to get acquainted with.

How to Replace an AC Compressor

Before making any substantial purchase, it’s advisable to confirm whether the compressor still operates at peak levels by evaluating the outgoing temperatures from your air-conditioning system. If its operations are deemed to be deviating from the norm, then it’s high time to replace your compressor.

Identify an Ideal Model

Purchasing an ideal AC Compressor can be a daunting task especially for novice HVAC owners. Before making any purchase, it’s imperative to ascertain that your designated model coincides with your current unit. After all, it doesn’t make sense spending ludicrous finances on the wrong AC compressor. To avoid falling victim to this type of problem, kindly go through the instructions printed on the manual.

Turn Off the Power Supply

As a precautionary measure, it’s paramount to turn off the main electrical supply connection that can result in substantial injury. Whether you’ve hired a seasoned expert or decided to do it by yourself, ensure that the connection to the power supply is terminated during the replacement period.

Remove the Refrigerant with Precision

Having opened the cooling system, you need to exercise utmost caution when removing the refrigerant to avoid spillage. This precautionary principle stems from an environmental compliance protocol that demands the acquisition of outgoing refrigerant into a storage cylinder before the AC compressor can be replaced.

Terminate Refrigerant Lines

Cutting off the refrigerant line is an essential guideline that must be considered before extracting the outdated AC compressor. Since the AC compressor is often located outside, you can still use the manual as a reference to tracing its exact location.

Unscrew the Dilapidated Compressor

Before installing the brand new AC compressor, you must first unbolt the air conditioner’s compressor by removing the housing attached to it. While the AC compressor often comes with a single screw, you must consider adopting this standard setup commonly used for holding both the high and low-pressure lines.

Attach the new Compressor

The brand new compressor must be fixed within the condenser unit with the aid of mounting bolts. Reconnect the refrigerant lines as previously done while ensuring that all other coils have been replaced as well.

Reassemble the Unit

Having completed every task with precision, ensure that your connection to the power source is restored and ascertaining that the air conditioning is operating at peak levels once again.

O.C. McDonald’s Profile

At O.C. McDonald, we are painstakingly built an exceptional reputation for providing unrivaled services. From AC compressor replacement to plumbing, we are privileged to have a seasoned team working round the clock to ensure that your tailored needs are met. Feel free to contact us today at 408-295-2182 and learn how we can help you to realize your goals.

Hiring a mechanical engineer for building retrofits, rebuilds, additions, or enhancements is the quickest and surest way to obtain the ideal facilities for supporting your operations. Are you ready to make your workplace more modern, efficient, or compliant? If so, we can help.

Call us today at 408-295-2182.


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