Odd noises coming from an air conditioner are a way that the system warns us that they have repair needs. There are many different sounds that can indicate you should call for professional air conditioning repairs: hissing (possibly escaping refrigerant), clanging (a bent fan blade), and screeching (worn down bearings in the motors).
The air filter is a simple component of your air conditioning system. Its mesh of fibers is designed to stop larger contaminants coming through the return air ducts (dirt, dust, fibers, insect dander, etc.) from entering the AC’s cabinet.
If you think that your home is suffering from low quality air, you’re probably right: numerous houses in the U.S. today are dealing with contaminant-filled air due to a lack of fresh-air circulation. Fortunately, there are many ways to clean the air in a home to make it a healthier and more comfortable environment.