Earning your trust drives us at CJS Heating and Air. 24-hours, every day, CJS techs bring decades of experience to serving you in Dayton, Washington Township, Springboro, Centerville and Xenia. They’re clean, screened, trained and timely, providing AC system maintenance, air conditioning tune-ups, air conditioning repairs, and system replacement. You call. We come. It’s fixed. Guaranteed. It’s how we earn five-star local reviews. We’d like to earn the next one from you.