Do you need a company providing commercial and residential air conditioning or heating services, repair and installation in Portsmouth, NH? Stop searching - we have detailed information, unbiased customer reviews and recommendations about local contractors. 
We proudly serve the comfort needs of the New Hampshire Seacoast, the North Shore of Massachusetts and Southern Maine communities. If your home or office's heating and a/c system is operating smoothly and efficiently, your monthly utility bill will ultimately be lower. The only way you can be absolutely sure that it is operating smoothly and efficiently is to have it inspected by one of our factory trained service technicians.
Dan Sullivan —
Highly recommend Key heating & Air. Very nice folks to deal with and the technician Lorne was on time and very knowledgeable
