The Federal Environmental Protection Agency regulates the type of refrigerant you can use in your air conditioner. Your Castle Rock service technicians are current on EPA rules for properly removing and disposing of used refrigerant, protecting the environment while keeping you cool. At 1 STOP Tire & Auto Service in Castle Rock we install quality NAPA replacement parts. Give us a call at 303.688.0366 and let us help keep you safely and economically on the road.