What is the average life of a central air conditioning system?
It can vary, depending on how much the system is used and how regularly it is checked or serviced. Generally, the average life of cooling units built in the 1970s and '80s is about 15 years, but individual units may last longer, depending on use and how well they are maintained. Heat pumps have about the same life span. Newer units are expected to last even longer.
