Swiss Air Heating & Cooling is a family-owned business that has been serving O'Fallon, MO residents since 1989. If you're looking for quality work, you're going to find it with our team members! We're proud to say that we've got the best technicians in the area. Our training, licensure, and commitment to quality are unparalleled. If you need heating or air conditioning services of any kind, contact us today to schedule an appointment with one of our professional technicians!