Key Heating & Air Conditioning is a family-owned HVAC company with over 30 years of experience serving the NH Seacoast, North Shore of MA, Maine Seacoast, and the Lakes Region. They offer a full range of services, including installation and maintenance of geothermal and ductless heat pump systems, and are equipped with the latest technology. As a design-build company, they assist with all HVAC needs and provide a comprehensive service membership program along with 24/7 emergency support. Their team of factory-trained technicians has more than 200 years of combined experience, ensuring professional and reliable service. Customers praise the company for their friendly and courteous treatment, often feeling like long-time customers from the start. Technicians are thorough, professional, and clear in explaining options and procedures, with reviews highlighting their attentiveness and willingness to answer questions. Overall, Key Heating & Air Conditioning is recognized for good business practices, knowledgeable staff, and quality service.
Great guy,excellent service,5 stare, you can't top that.
February 2026
Pete is great. Prompt, friendly, accurate. He explained all work to be done, reviewed before and after work. Answered all questions regarding maintenance and pipes. The best! On the membership plan no charge for this service today.
January 2026
Pete was great! Persisted til the issue was resolved
