The problem is likely the fan.
Central air condenser fan making noise.
Noisy air conditioner solution.
If your air conditioner make a loud hum check the following 1.
If you hear a loud rattling noise it could be a minor issue like loose stones or debris that s caught in the condensing unit.
There s a rattling or buzzing noise coming from the condenser unit when the fan is turned on there is more than one possible cause for a noisy air conditioner.
Parts on condenser fans can come loose and knock against other parts of the outdoor unit making a banging noise.
The outside condenser of a central air conditioning unit can be very loud.
Read on to find the best solution based on the cause of the problem.
This can result in a loud humming noise.
If you hear the clicking noise when you try to start your ac but it won t start that s usually a sign of an electrical issue within the thermostat compressor or capacitor.
Squealing if your air conditioner is making a squealing sound the belt connecting the motor to the blower may have slipped or the bearings on your condenser fan s motor may be worn down.
When air conditioning units get dirty debris can impede the fan s circulation inside the unit.
No reason to fret though.
Complaint you hear a high pitched whistling or screaming sound for 10 15 minutes after the ac first kicks on.
Clanking or banging if you re hearing these sounds from your unit the issue is usually the blower assembly or the motor.
To examine your noisy air conditioner remove the outside casing to reveal the inner part of your ac unit you will notice the fan located just in front of the coils.
If you hear the clicking noise while the ac is running it could mean a small object has nestled its way into your blower fan so the object hits against the fan as it spins.
Is your ac screaming whistling.
If this is your problem remove any debris from the unit and check the fan blades for dents or dings.
If your air conditioner is making a humming noise the culprit is likely dirt or dust.