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HomeRepair HelpArcoaire Central A/C RepairArcoaire Central air conditioner is noisy or loud Repair
Arcoaire Central air conditioner is noisy or loud
When your Arcoaire central air conditioner is noisy or loud, start with the condensing unit, where the most likely problem is debris hitting the condenser fan blade. Turn off power at the disconnect box and circuit breaker before inspecting and clearing leaves, sticks, or other debris. If your central AC is making loud noise, the condenser fan motor may have worn bearings; with power off, carefully rotate the motor by hand and replace it if it feels rough or does not turn smoothly. Loose grille or cabinet panels can also vibrate and cause air conditioner making noise, so tighten their fasteners. Next, check the condenser fan blade for looseness, a damaged hub, or a loose set screw. A noisy condenser fan may require a replacement blade or condenser fan motor. If the outdoor unit makes an ac buzzing noise and the system is not cooling, a defective contactor may be chattering or failing to send power to the condensing unit. Contactors and other components use 240V line voltage, so have a qualified HVAC technician handle electrical testing or replacement. Enter your Arcoaire model number to find the exact 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 - Arcoaire 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 - Arcoaire 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 - Arcoaire 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 - Arcoaire 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 Arcoaire central AC making a loud noise when the condenser fan runs?
How do I check a noisy condenser fan motor or fan blade?
What causes an AC unit to make a buzzing noise but not cool?
Should I replace the Arcoaire condenser fan motor if the air conditioner is making noise?
How do I find the correct Arcoaire central air conditioner noise-related replacement part?
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