Over the course of the last several months the price for R-22 refrigerant has doubled if not tripled in price. This means for all older HVAC systems it is going to be more costly to repair. The reason for the refrigerant increase is due to the EPA making stricter online casino gaming guidelines for refrigerant to adhere to. Also because they have manufactured a new refrigerant R410 which is safer and more environmentally friendly. With that being said repairing older R22 units are getting more costly.