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HomeRepair HelpMedallion Central A/C RepairMedallion Central air conditioner is noisy or loud Repair
Medallion Central air conditioner is noisy or loud
When your Medallion central AC is making loud noise, start with the outdoor condensing unit, where debris, worn bearings, loose panels, or a damaged fan blade are the most likely causes. Turn off power at the disconnect box and circuit breaker before inspecting the unit. Leaves, sticks, or other debris hitting the condenser fan can cause an air conditioner making noise or rattling sound, so clean the area carefully. Next, check the condenser fan motor by turning it by hand. Rough movement or grinding points to worn bearings and an AC fan motor making noise. Tighten loose grille or cabinet panels that may vibrate, and inspect the condenser fan blade for looseness, a damaged hub, or a loose set screw. A defective condenser fan motor can also cause a noisy condenser fan. If the contactor is buzzing or the condensing unit makes noise but does not cool, it may need testing or replacement. Avoid testing or replacing the contactor yourself because it involves 240V line voltage. Enter your Medallion model number to find the exact replacement fan motor, fan blade, panel, or contactor 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 - Medallion 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 - Medallion 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 - Medallion 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 - Medallion 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 Medallion central AC making a loud noise?
How do I troubleshoot a condenser fan making noise?
Can a defective contactor cause an air conditioner to make noise?
What should I check if my noisy outdoor AC is not cooling?
How do I find the correct Medallion condenser fan motor or fan blade replacement part?
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