Key Heating & Air Conditioning
69 Main St,
Alton
NH ,
03809
Open 24 Hours
Our family-owned, award-winning company has been providing the best energy solutions for New England homeowners for more than 25 years. Our factory-trained technicians, project managers, and installation crew have a combined trade experience of more than 150 years in all aspects of the heating, cooling and air quality business. In fact, we have team members who have been working with Key for more than 18 years.