The Qualifications to Give You Peace of Mind At Knochelmann Service Experts Heating & Air Conditioning in Covington, we’ve been serving the community since 1968 and all of our professionals and equipment installers are licensed, highly qualified and NATE-certified. We encourage you to learn about NATE certification and all it involves. It’s a highly-touted credential that our service folks have earned through study, experience, 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 859-905-0834 for Knochelmann Service Experts Heating & Air Conditioning in Covington. We have all of the finest qualifications to provide expert furnace and AC repair and service. And all of our work is 100% guaranteed for a full year!