Air conditioner parts can be purchased at Repair Clinic or from Home Depot. Repair Clinic has parts for various popular brands of air conditioners such as Electrolux, LG, Kelvinator and Samsung. Parts for some lesser-known brands can also be found on this website.
As of 2015, prices for basic parts range from about $3 for self-tapping screws to about $18 for an exhaust hose. On the Home Depot website, an LG wall case for an LG air conditioner can be bought for $78 as of 2015. A wall sleeve for an LG air conditioner costs about $100. It is important to verify the model and make of an air conditioner before buying parts for it, as prices vary accordingly.