Business Details
33 Years
experience
Emergency
services
Expert HVAC Services in New England
Key Heating & Air Conditioning has been delivering cutting-edge heating and cooling solutions to New England homeowners since 1993. As a family-owned, award-winning business, we combine over 30 years of industry expertise with a commitment to exceptional customer service. Our team of factory-trained technicians and project managers brings more than 150 years of combined experience in HVAC systems, ensuring comprehensive maintenance, installation, and repair services. We prioritize ongoing technical training to maintain up-to-date knowledge of evolving HVAC technologies while offering 24/7 emergency service and free estimates.Our dedication to environmental responsibility is demonstrated through the use of energy-efficient equipment, EPA-certified refrigerant management, and alternative energy solutions like geothermal systems. Recognized by the Better Business Bureau with an A+ rating, we focus on achieving 100% customer satisfaction through unbiased recommendations and personalized comfort solutions tailored to each homeowner's needs.
Services
Heating Systems
Cooling Systems
Geothermal Solutions
Electrical Services
Maintenance Plans
Details
- Year established: 1993
Highlights and features
- We offer 30+ years of combined HVAC expertise with factory-trained technicians
- Our team provides 24/7 emergency service for urgent heating and cooling needs
- We guarantee free, no-obligation estimates for all installation projects
- Our technicians are EPA-certified for environmentally responsible refrigerant handling
- We maintain a Better Business Bureau A+ rating for service excellence
Associations and certifications
- Better Business Bureau (BBB) A+ Rating
What people say
Great Support
Very knowledgeable
Outstanding
Best I have had
Super knowledgeable
Services
Heating Systems
We install, repair, and maintain residential heating systems including furnaces, boilers, and heat pumps. Our factory-trained technicians handle all brands and models while offering energy-efficient replacements. With over 25 years of experience, we provide free home analyses to recommend optimal heating solutions for New England winters.
Cooling Systems
Our HVAC experts specialize in central air and ductless cooling systems with 30+ years of installation and repair experience. We service all brands while offering energy-efficient replacements and seasonal maintenance plans. Our technicians diagnose and fix cooling issues promptly to ensure summer comfort in humid climates.
Geothermal Solutions
We design and install geothermal heating and cooling systems that reduce energy emissions by up to 70%. Our systems utilize earth's constant temperatures for sustainable climate control while qualifying for federal tax credits. As New England's leading geothermal contractor, we offer complete system maintenance and consultation services.
Electrical Services
We provide comprehensive electrical services including generator installations, surge protection, and safety inspections. Our certified technicians ensure proper system integration with HVAC equipment while maintaining safety standards. Services include whole-house surge protection and electrical safety evaluations for residential properties.
Maintenance Plans
Our Safety & Efficiency Membership offers year-round savings on routine maintenance and service calls. Plans include priority scheduling, discounted repairs, and seasonal system checkups. Regular maintenance improves system efficiency, extends equipment lifespan, and helps prevent emergency breakdowns during extreme weather conditions.
Questions
What HVAC services do you offer?
We provide complete heating, cooling, geothermal systems, electrical services, and maintenance plans for residential properties across NH and Southern ME.
Do you offer emergency HVAC service?
Yes, we provide 24/7 emergency service for urgent heating and cooling system failures with prompt response times.
Are financing options available?
We offer financing options with approved credit for HVAC system replacements and installations, including geothermal and energy-efficient models.
What areas do you service?
We serve NH Seacoast, Lakes Region, and Southern ME with both residential and commercial HVAC solutions.
Do you offer equipment maintenance plans?
Yes, our Safety & Efficiency Membership provides discounted maintenance, priority scheduling, and year-round service benefits.
Are your technicians certified?
All our HVAC technicians are factory-trained and EPA-certified for proper refrigerant handling and system maintenance.
Videos
Reviews (5)
Dan Sullivan
Jun 24, 2022
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Highly recommend Key heating & Air. Very nice folks to deal with and the technician Lorne was on time and very knowledgeable. I wouldn't hesitate to call them again if the need arises. Service: A/C system repair
Robert C.
Jun 12, 2022
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My recent experience with a repair to my AC went well. The service person was very experienced and spent some time going over the systems in my house. I will definitely use Key HVAC in the future. Service: Repair HVAC
Brianna Desrochers
May 25, 2022
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UPDATE: Lorne reinforced our positive impression of Key HVAC. He was timely, professional and knowledgeable. Similar to our last experience with Grace and the heating system, Lorne walked us through everything with the cooling system, which was really important as new homeowners. We will continue using Key and look forward to recommending Key to others as well! Grace showed up on time and was very professional.
She was very knowledgeable and thorough, and pleasant to have in our home. In addition, we appreciated that she took the time to walk us through all the work she had completed. As first time homeowners, we truly appreciated this. Looking forward to using Key again!
She was very knowledgeable and thorough, and pleasant to have in our home. In addition, we appreciated that she took the time to walk us through all the work she had completed. As first time homeowners, we truly appreciated this. Looking forward to using Key again!
Heather F.
May 22, 2022
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Update: I had issues with my AC not cooling. Key was quick to get someone out to my house for service. Walter did a great job. He was quick with the repairs and had my unit working in no time. I highly recommend Key Heating and AC Jimmy has been my technician and he's done a great job. Helpful and professional. I'm very happy with my service.
Thomas Hand
May 21, 2022
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Unfortunately I did not have a good experience with Lorne Smotrilla. He came into our home with muddy shoes and dirt was all over our home. Your technicians need to be trained to take off shoes, bring inside shoes or have shoe coverings. I am recovering from a bad wrist break and I had to vacuum the entire house and wash floors. My wife thinks some of our oriental rugs will need to be cleaned. Interesting that the following day after our AC tune-up, a coupon is emailed for $10 off. I will be deducting $10 from my $478 invoice.
