In business since 1978, First Class Heating in Rochester, NH brings you 40+ years of knowledge and commitment. Our HVAC technicians have a combined 75+ years of experience. We are proud to serve the local NH seacoast communities of Rochester, Dover, Durham, Rollinsford, Somersworth, Newmarket, Milton, Wakefield and The Berwicks, Lebanon and Acton in Southern ME.  We provide prompt, friendly service and offer 24/7 emergency coverage so we can be there when you need us.