The Qualifications to Give You Peace of Mind At BW/Cook Service Experts Heating & Air Conditioning in Elkhart, we’ve been serving the community since 1911 and all of our experts and equipment installers are licensed, highly qualified and NATE-certified. We encourage you to learn about NATE certification and all it requires. It’s a notable credential that our service folks have earned through education, 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 574-218-6404 for BW/Cook Service Experts Heating & Air Conditioning in Elkhart. We have all of the best qualifications to provide expert furnace and AC repair and service. And all of our work is 100% guaranteed for a full year!