Operational for more than 25 years, R & D Refrigeration is a family-owned and operated company that offers a range of heating and air conditioning equipment for the residents of Arizona. The company is an authorized dealer for heating and cooling products from the Comfortmaker brand. It provides repair and installation solutions for central systems, heat pumps and rooftop units in homes and offices. It offers same-day repair and retrofitting services. R & D Refrigeration s technicians are certified in the North American Technician Excellence (NATE) exams, a certification program for technicians in the heating, ventilation, air conditioning and refrigeration industry. The company is a member of several organizations, including the Arizona Heat Pump Council, Electric League of Arizona and Better Business Bureau.