Key Heating and Air Conditioning
Serving the Seacoast for 20 years.
170 West Road Suite 8 Portsmouth NH
(603) 436-8811

We work hard to provide the best service available at competitive prices. We offer FREE HVAC system inspections to prepare your heating or air conditioning system for all seasons. Ask us about tuning up your heating or air conditioning system today.

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.