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HomeRepair HelpYork Central A/C RepairYork Central air conditioner is noisy or loud Repair
York Central air conditioner is noisy or loud
If your York central air conditioner is making loud noise, start with the outdoor condensing unit and work through the most likely causes in order. Debris striking the condenser fan blade is the most common reason for an air conditioner making noise, so turn off power at the disconnect box and remove leaves or other objects. Next, check the condenser fan motor. Worn bearings can cause AC fan motor noise or a noisy condenser fan; with power off, the motor shaft should turn smoothly by hand. Loose grille or cabinet panels can also vibrate and create an air conditioner loud noise, so tighten them. If the condenser fan blade is loose, bent, or wobbles on the shaft, tighten its set screw or replace the blade. A failing condenser fan motor may also be noisy and require replacement. Finally, a defective contactor can make buzzing or rattling sounds, and can prevent the unit from cooling. Testing or replacing the contactor involves 240V line voltage and is best left to a qualified technician. Refrigerant or sealed-system repairs require an EPA 608-certified HVAC technician. Enter your model number to find the exact York replacement part for your central air conditioner.
01 - Debris Hitting Fan
Over time debris can fall into the condensing unit, causing a noise when the fan is running. Inspect the fan blade and inside the unit for any debris. Clean out the outdoor unit as needed but be sure to shut off power to the unit before attempting to clean it out.
Top Solution
02 - York Central Air Conditioner Fan Motor
The fan motor has bearings that can wear out over time. When the bearings are worn out, they make loud noise. To check the bearings, try rotating the fan motor by hand. If the motor does not turn smoothly, replace it.
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Highly Likely
03 - Panels Vibrating
If the outdoor condensing unit is noisy, the grille or one of the panels may be loose and vibrating. Check for loose panels and tighten them as needed.
Highly Likely
04 - York Central Air Conditioner Fan Blade
The fan blade on the condenser fan motor might be defective or loose. To check the fan blade, wiggle the fan motor shaft. If the motor shaft is loose, tighten or replace the set screw. If the condenser fan motor is still making noise, replace the fan blade.
Less Common
05 - York Central Air Conditioner Condenser Fan Motor
The condenser fan motor has bearings that can wear out over time. When the bearings are worn out, they make loud noise. To check the bearings, try rotating the condenser fan motor by hand. If the motor does not turn smoothly, replace it.
Less Common
06 - York Central Air Conditioner Contactor
The furnace control board sends a low voltage signal to the contactor. When the contactor receives the signal from the control board, it closes the circuit, sending voltage to the condensing unit components. If the contactor is defective, it will not provide voltage to the condensing unit. In addition, the contactor will make noise when it is defective. If the condensing unit is making noise but not cooling, the contactor has probably failed. To determine if the contactor is at fault, use a multimeter to test the contactor for continuity. If the contactor does not have continuity, replace it.
Less Common
Frequently Asked Questions
Why is my York central AC making a loud noise?
What should I check when the condenser fan motor is making noise?
How do I fix an AC unit making a rattling noise from the fan blade?
Why is my air conditioner making a buzzing noise but not cooling?
How do I identify the correct York central air conditioner replacement part?
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