Business Details
33 Years
experience
Emergency
services
Your Trusted HVAC Partner in New England
Since 1993, Key Heating & Air Conditioning has been a trusted provider of energy solutions for New England homeowners. Our family-owned business combines over 150 years of collective expertise with factory-trained technicians to deliver heating, cooling, and air quality services tailored to residential needs. We prioritize ongoing education to maintain technical proficiency in emerging systems like geothermal and solar thermal technologies. Our commitment to customer satisfaction is demonstrated through 24/7 emergency service, free estimates, and a Safety & Efficiency Membership program.Recognized by the Better Business Bureau with an A+ rating, we emphasize environmental responsibility through refrigerant management and high SEER equipment installations. Team cohesion and community involvement remain central to our operations, supporting our mission of achieving 100% customer satisfaction on every project.
Services
Heating Installation
Cooling Repairs
Geothermal Systems
Emergency Service
Air Quality Solutions
System Maintenance
Ductless AC Installation
Energy Assessments
Electrical Services
Whole-House Surge Protection
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.
- EPA-certified professionals ensure environmentally responsible refrigerant handling.
- We maintain a BBB A+ rating for consistent service quality and reliability.
- Financing options available with approved credit for system upgrades.
Associations and certifications
- Better Business Bureau (BBB)
What people say
Great Support
Very knowledgeable
Outstanding
Thorough job
Best I have had
Services
Heating Installation
We install energy-efficient heating systems tailored to New England climates. Our technicians handle furnaces, boilers, and heat pumps with precision. Customers receive free home energy assessments to determine optimal solutions.
Cooling Repairs
Emergency and scheduled repairs for central air and ductless systems ensure summer comfort. Factory-trained technicians diagnose issues rapidly. Preventative maintenance extends system longevity and efficiency.
Geothermal Systems
Our award-winning geothermal installations reduce energy emissions by up to 70%. Systems utilize earth's stable temperatures for year-round climate control. Qualified advisors guide customers through federal tax credit eligibility.
Emergency Service
HVAC emergencies receive immediate attention with same-day service guarantees. Technicians carry essential replacement parts for rapid repairs. Coverage includes all brands and system types across service regions.
Air Quality Solutions
We improve indoor environments through purifiers, humidifiers, and ventilation systems. Products include Honeywell and AprilAire brands. Custom solutions address allergens, humidity control, and pollutant removal.
Questions
What HVAC services do you offer?
We provide heating, cooling, geothermal systems, air quality solutions, emergency repairs, and maintenance programs for residential properties.
Do you service all HVAC brands?
Yes, our technicians service and repair all major HVAC brands with factory-trained expertise.
Are financing options available?
Yes, we offer financing through Rheem, Mitsubishi, and other approved credit programs for system upgrades.
What areas do you serve?
We serve NH Seacoast, Lakes Region, and Southern Maine with prompt service response times.
Do you offer 24/7 emergency service?
Yes, our team provides round-the-clock emergency HVAC support for urgent heating and cooling needs.
How can I improve indoor air quality?
We recommend air purifiers, humidifiers, and ventilation systems tailored to your home's specific air quality requirements.
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.
