Many households use air conditioning systems which are old and run on outdated technology. As the system ages, parts wear and breakdown, and repairs costs rise. Older air conditioners need a lot of energy to run and, as they come to the end of their lifespan, they work less efficiently, leaving the householder with even higher energy bills.
If your air conditioning system is causing problems and costing you more and more, consider replacing it with a newer, energy efficient AC.