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HomeRepair HelpMcQuay A/C RepairMcQuay Air conditioner is loud or noisy Repair
McQuay Air conditioner is loud or noisy
If your McQuay air conditioner is loud or noisy, start with the parts most likely to make mechanical noise as they wear or loosen. A wearing compressor can make the air conditioner making noise problem more noticeable, though a noisy compressor may continue running for years and should be replaced only by a licensed professional if needed. Next, check the dual shaft fan motor, since dry or worn bearings can cause an AC making loud noise. Damaged fan blades or blades rubbing the housing can create rattling, scraping, or an air conditioner grinding noise, so inspect both the front and rear blades. If the condenser fan motor is receiving proper voltage but will not run smoothly, the capacitor may need testing before replacing the motor. A worn fan motor can also get noisy as its bearings fail. Finally, check the blower wheel for wobbling, looseness, or a stripped set screw. Enter your McQuay model number on RepairClinic.com to find the exact compressor, dual shaft fan motor, fan blade, condenser fan motor, fan motor, or blower wheel that fits your air conditioner.
01 - McQuay Air Conditioner Compressor
When the compressor is wearing out, it generates more noise than usual. When this happens, it is not necessary to replace the compressor—compressors often last for years after they become noisy. However, if you would prefer to have a new compressor, have a licensed professional replace it.
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02 - McQuay Air Conditioner Dual Shaft Fan Motor
The fan motor or dual shaft fan motor has bearings which are usually permanently lubricated. However, over several years, the lubrication will break down, causing the motor to become noisy. If this happens, replace the dual shaft fan motor.
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03 - McQuay Air Conditioner Fan Blade
Air conditioners have a fan blade in the front and a fan blade in the rear. Check both fan blades for damage. If a fan blade is damaged, or is rubbing against the fan housing, replace it.
Highly Likely
04 - McQuay Air Conditioner Condenser Fan Motor
To determine if the condenser fan motor is working, use a multimeter to test the incoming voltage to the motor. If the condenser fan motor is receiving the correct voltage, but the motor still won’t run, you should inspect the capacitor, if applicable, for any bulging or leaking. You can also use a multimeter to determine if the capacitor can hold and release its charge. If the capacitor appears to be in good condition, replace the condenser fan motor.
Highly Likely
05 - McQuay Air Conditioner Fan Motor
The fan blades might be scraping against the blower housing. Air conditioners have a fan blade in the front and a fan blade in the rear. Check both fan blades to ensure that they are not rubbing against the housing. If the blades aren’t rubbing against the housing and the fan motor is still noisy, check the fan motor bearings for wear. If the bearings are worn, replace the fan motor.
Highly Likely
06 - McQuay Air Conditioner Blower Wheel
Wiggle the blower wheel to see if it wobbles on the motor shaft. If the blower wheel is loose, try tightening or replacing the set screw screw if it has one. If blower wheel still isn’t stable, replace the blower wheel altogether.
Common
Frequently Asked Questions
Why is my McQuay air conditioner making a loud noise?
What causes a McQuay window air conditioner to rattle?
Why is my McQuay air conditioner making a grinding noise?
Can a bad condenser fan motor make my McQuay AC noisy or stop the fan from running?
Should I replace the compressor if my McQuay air conditioner is noisy?
How do I find the right McQuay air conditioner replacement part?
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