(NBC News) R-22 Freon is being phased out and replaced by a new more environmentally friendly refrigerant called R-410A.
Angie's List founder Angie Hicks completed some research on Air Conditioners and has some advice on whether you should repair an old A/C unit.
Angie says use the rule of 5000s. "If you find out how much the repair is going to be and the number of years old your air conditioner is, if the two multiplied together add up to more than $5,000, you should go ahead and replace your unit" says Angie Hicks.
-- Chris Clackum reports