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HomeRepair HelpTempstar Central A/C RepairTempstar Central air conditioner is noisy or loud Repair
Tempstar Central air conditioner is noisy or loud
Is your Tempstar central air conditioner making loud noise, buzzing, rattling, or showing other signs of an air conditioner making noise? Start with the simplest cause: debris hitting the condenser fan blade inside the outdoor condensing unit. Turn off power at the disconnect box and circuit breaker before inspecting or cleaning the unit. Next, check the condenser fan motor, since worn bearings can cause AC fan motor noise and a noisy condenser fan. With power off, the motor shaft should rotate smoothly by hand. Loose grille or cabinet panels can also vibrate and create air conditioner loud noise, so tighten any loose fasteners. If the motor shaft is loose, the condenser fan blade may need its set screw tightened or the blade replaced. A worn condenser fan motor can produce the same symptom. Finally, a defective contactor may buzz or make noise, and can prevent the unit from cooling. Testing or replacing a contactor involves 240V line voltage and should be handled by a qualified technician unless you are trained and equipped to work safely. Enter your Tempstar 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 - Tempstar 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 - Tempstar 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 - Tempstar 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 - Tempstar 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 Tempstar central air conditioner making a loud noise?
How do I troubleshoot a noisy condenser fan or AC fan motor?
Why is my air conditioner making noise but not cooling?
How can I stop my outdoor AC unit from rattling or vibrating?
How do I identify the correct Tempstar central air conditioner fan motor or fan blade?
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