Air conditioners are much less expensive to repair than to change. You might need to change your system if you multiply its age in years by the approximated repair service costs and the outcome is more than $5,000. The repair service is more than 50% of the unit's purchase rate. https://heatingandairconditioning93714.wikinstructions.com/1631195/the_25_second_trick_for_american_energy_heat_air