When should I replace my old air conditioning unit?

The lifetime of an air conditioning unit depends on many factors. Some of them are described below: a. The quality of the air conditioning unit.

b. The operating hours during a year.

c. The environmental conditions (high ambient temperatures during summer or very low during winter).

d. Proper service.

Generally we could say that a lifetime of an air-conditioning unit with tolerable efficiency and with an acceptable operation cost, may overcome the 15 years.