Another cause could be twigs or leaves that have clogged your system.
Noisy window air conditioner a c fan bearing.
If the bearings are worn replace the fan motor.
Thus routinely oiling with a long tubed applicator helps them spin with less noise.
In a properly working air conditioner the motorized fan will pull air through the filter and over the cold evaporator coils and then re circulate the cooled air back into the room.
A rattling noise can mean that your air conditioner is starting to deteriorate and some of its parts are loosening.
The electrical contractor in the equipment can also make a chattering sound which can damage other components including the compressor if allowed to continue.
If the blades aren t rubbing against the housing and the fan motor is still noisy check the fan motor bearings for wear.
These deposits can make louder air flow noise through them.
If your window air conditioner is making an unusual noise the problem could be with the fan.
Clean and vacuum inside the window air conditioner assure that none of the fan blades louvers vents or air channels are caked with dirt and grime.
Indeed how to quiet a noisy window air conditioner often involves a good and deep cleaning of the unit both inside and out.
There is more than one possible cause for a noisy air conditioner.
This can be done by hand or by using a strong pair of pliers if necessary.
Air conditioners have a fan blade in the front and a fan blade in the rear.
Ac airconditioner fix how to fix a loud noisy window air conditioner.
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.
When fixing noisy window air conditioners be sure to oil fan bearings fans with dry bearings can squeal start up too slowly run hotter than need be and can overheat and burn out.
Oiling can also extend their lives too.
If not straighten them until they are properly aligned.
Check to see if the blades are straight.
The best way to quiet a noisy window air conditioner is through regular maintenance ensuring the unit is properly secured and any loose parts are tightened.
A rattling noise can also be caused by loose or unbalanced fan blades striking the side of the fan housing unit.
