Some consumers report their air conditioners are "louder" than an identical model in a friend or relative’s home. This may be due to where the air conditioner is installed, the method of installation, or the type of construction used on the building. Other factors could be the number of people in the house, as well as different furnishings and room arrangements. Carpeting, draperies, upholstered furniture and wall coverings help muffle air conditioner sounds, which are most noticeable in quiet surroundings.