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HomeRepair HelpGarrison Central A/C RepairGarrison Central air conditioner is noisy or loud Repair
Garrison Central air conditioner is noisy or loud
If your Garrison central air conditioner is making a loud noise, rattling, buzzing, or other unusual air conditioner noise, start by checking the outdoor condensing unit for debris hitting the condenser fan blade. Turn off power at the disconnect box and circuit breaker before cleaning or inspecting the unit. Next, check the condenser fan motor. Worn bearings can cause AC fan motor noise, and the motor should rotate smoothly by hand when power is off. Loose grille or cabinet panels may also vibrate, while a loose, damaged, or unbalanced condenser fan blade can create noise as it spins. If the noise continues, the condenser fan motor may need replacement. A defective contactor can also buzz or chatter, and can prevent the unit from cooling. Testing or replacing the contactor involves hazardous 240V line voltage and is best left to a qualified HVAC technician unless you have the proper training. Enter your Garrison model number to find the exact replacement fan motor, fan blade, panel, or contactor for your central air conditioner. Refrigerant and sealed-system repairs require EPA 608 certification and a licensed HVAC technician.
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 - Garrison 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 - Garrison 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 - Garrison 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 - Garrison 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 Garrison central AC making a loud noise?
What should I check when the condenser fan is making noise?
Why is my AC making a buzzing noise and not cooling?
How do I know whether the condenser fan motor or fan blade is causing the noise?
How do I find the correct Garrison central AC replacement part?
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