The Qualifications to Give You Peace of Mind At Gordon's Service Experts Heating & Air Conditioning in Oklahoma City, we’ve been serving the community since 1945 and all of our technicians and equipment installers are licensed, highly qualified and NATE-certified. We encourage you to read about NATE certification and all it entails. It’s a highly-touted credential that our service folks have earned through study, expertise, extensive training and testing. So if you should need HVAC service or repair, don’t just call some guy with a few wrenches and a truck. Call 405-432-2197 for Gordon's Service Experts Heating & Air Conditioning in Oklahoma City. We have all of the top qualifications to provide expert furnace and AC repair and service. And all of our work is 100% guaranteed for a full year!