
About Bergeron Mechanical Systems
Bergeron Mechanical Systems opened its doors back in June of 1973. Our commitment was simple—to provide an exceptional level of HVAC service from end to end. Making that commitment a reality in the life of our customers means constantly staying on top of technological developments in our industry. It means always looking for ways that our customers can secure financial advantages. Sometimes, that means being able to take advantage of tax breaks, rebates, and other sources of funding. And, sometimes, it just means doing a high-quality installation that helps a property owner save money on their bills and perhaps enhance the value of their home or commercial space.
Over the years, our commitment to being proactive led us to participate in an initiative by the National Energy Improvement Fund (NEIF). We were the first adopter of a program that allowed users to borrow up to $10,000 interest-free. While the program existed, we secured over $134,000 in funding for our customers. Moreover, Bergeron Mechanical Systems was the only firm in Cheshire County to be approved for participation in NEIF. When property owners come to us for help, they can be confident they’re getting all the options available to reduce their financial burden.
We were the first to adopt HouseCall Pro, allowing for a digital customer experience. We’ve invested in a showroom, The Comfort Zone, where people can come and learn firsthand about Mitsubishi’s ductless HVAC solutions.
The rest of the industry has noticed. We’ve been invited to speak at the Local Energy Solutions (LES) conference to support other professionals in advancing their own knowledge.


What Sets Us Apart?
Trusted for a Reason
Serving Keene, NH Since 1973
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Total Home Comfort - GuaranteedWe are the only area contractor to offer a twelve-year full parts and labor warranty on all new installs!
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We Can Help You Same-DayDon't wait weeks for an appointment. For customers with an active service contract, same-day service is our priority!
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Ask About Our WarrantyTalk to our team about our heating and cooling services warranty!
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100% Satisfaction GuaranteeWe never leave you unhappy! We guarantee it.


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"Will Recommend!"
- Shauna M.
How We Save Our Customers Money
Staying on top of the latest trends allows us to take a holistic look at the HVAC process and understand all the ways a customer can save (or lose) money. An unfortunate reality is that 90 percent of the heat pumps are incorrectly installed. They’re not sized right, and they’re often not designed properly. Bergeron Mechanical Systems is part of the 10 percent of contractors that properly design and install HVAC systems.
A report that comes from the U.S. Department of Energy affirmed the widespread problems with incorrect installation. In particular, DOE’s Office of Energy Efficiency & Renewable Energy found that single-family homes have real problems with improper duct sizing and refrigerant charge, all of which lead to the inefficient use of energy and higher monthly bills for consumers.
This most recent study falls in line with trends that go back to the 1990s. That’s why we stay abreast of technological innovations and diagnostic tools that have come to the market over the years. There’s no reason for 90 percent of homes to struggle with higher costs and subpar airflow when advances in HVAC technology make it possible to do better.
For example, we know that simply sizing your HVAC unit properly can reduce peak demand, which in turn lowers energy costs. What’s more, this is good for the community as a whole by placing less of a burden on the electrical grid. All of this can be done without any compromise in comfort for our homeowners. We get it right by performing detailed load calculations—the kind that DOE regrettably reports are not being done in far too many cases.
Duct leakage is another problem that bedevils too many systems. The study finds that this leakage afflicts over 90 percent of HVAC units, leading to poor performance and higher costs. This points to a bigger problem uncovered by DOE, which is that the opportunities offered by new technology are mostly ignored by our industry. Bergeron Mechanical takes these advances—and studies like the one cited here—to heart, so we can continue to improve our own performance and the quality of our customers’ HVAC units.
Partnering with Our Community

Protecting Your Investment
The word “investment” gets thrown around a lot in our industry. There’s a good reason for that. An HVAC unit can result in financial return in the form of lower monthly bills and perhaps a higher resale value when the property goes to market. But we also know that all investments also involve risks. Good financial planners understand how to mitigate risks and protect their clients. Good HVAC installers do the same thing. We’re always looking at technologies that can mitigate risks for people up front, so they can capitalize on the investment opportunities our products offer.
From our Keene location, we serve all of Cheshire County and throughout Grafton and Windsor counties. We work with a diverse group of clients, and our technicians are trained to interact with them appropriately—including those in the LGBTQ+ community, which constitutes 10 percent of our customer base. Our job is to make people feel comfortable. That starts with our friendly approach to everyone. It includes making certain customers are comfortable with the systems we install and understand how they work. And ultimately, it means making sure they’re comfortable in their home thanks to a well-functioning HVAC unit.
Call Bergeron Mechanical Systems at (603) 733-4594 or contact us online today.
Got Questions? We've Got Answers!
Frequently Asked Questions
Still have questions or can't find the answer you need? Give us a call at 603-733-4594 today!
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Why are the techs sitting in their van on their cell phone after they completed the work at my location?
There are multiple facets that line up for us to be successful with any customer visit. One of them is documenting what we found/accomplished during our visit to your location. This information is best captured during and just after our work. Depending on connectivity we may complete our digital notes before, during or after our work at your location. This task is part of your work and billable to you.
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Are your technicians required to use PPE (personal protection equipment)?
Yes, we take all the precautions necessary, both to comply with local municipality’s requirements and to keep everyone safe.
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What brands does your company sell?
We proudly service, maintain and install MITSUBISHI ELECTRIC, YORK, and BRYANT products.