The cost of replacing an air conditioner compressor ranges anywhere between $550 and $2,400 as of 2015. Factors such as the model of the air conditioning unit, the faulty components and the refrigerant used influence the cost of replacement.
The central air compressor costs up to $650, while refrigerant recharge may cost up to $400. Replacing a compressor unit calls for the replacement of additional components, such as the air conditioning drier, thus raising the replacement cost. The extra cost comes from services such as problem diagnosis and labor charges.
If the air conditioning unit is older than 10 years, it may be economical to replace the whole unit than replacing the compressor. In most cases, such units are out of factory warranty cover, and the parts are not readily available.