New Hampshire HVAC Experts For 50+ Years
Air Conditioning, Solar, Heating, and High-Efficiency
HVAC Solutions in New Hampshire
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support
FULLY LICENSED & INSURED
FULLY GUARANTED
TRUSTED TECHNICIANS
UPFRONT PRICING
NO SURPRISE FEES
Fully licensed
& Insured
Fully
guaranteed
trusted
technicians
upfront
pricing
no surprise
fees
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YOUR COMFORT IS OUR PRIORITY!
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Our High-Efficiency HVAC
Services in New Hampshire
- Load Calculation: Accurate assessments to ensure proper system sizing for optimal performance.
- Strategic Placement: Expert placement for even temperature distribution and minimal air stratification.
- Quality Installation: Precise indoor and outdoor unit installation for seamless operation.
- Regular Maintenance: Routine plans to maintain system efficiency and prolong lifespan.
- Solar Power Design: Custom systems tailored to your energy needs for maximum efficiency.
- Solar Power Installation: Complete installation, ensuring optimal panel performance and savings.
- Solar Battery Backup: Store energy for cloudy days and outages, boosting independence.
- Solar-Powered Mini-Split Integration: Use solar energy for your HVAC system, reducing utility bills.
- Ventilation Solutions: Effective systems for clean air circulation and pollutant removal.
- iWave Air Purification: Ion technology for pathogen, virus, smoke, and odor reduction.
- Advanced Filtration: Superior filters to eliminate allergens, dust, pet dander, and mold.
- Humidity Control: Regulate moisture to help protect your home.
- Minotair Pentacare-V12 System: Advanced air purification integrated with your HVAC system for cleaner air.
Residential HVAC Services in NH
Commercial HVAC Services in NH
Industrial HVAC Services in NH
Residential HVAC Services in NH
Commercial HVAC Services in NH
Industrial HVAC Services in NH
Heating Solutions in
New Hampshire
For over 50 years, Bergeron Mechanical Systems has specialized in HVAC systems and New Hampshire heating services, ensuring homes stay warm through New England winters.
Our services include:
- Mini-split installation, replacement, and maintenance.
- Gas furnace installation, replacement, and maintenance.
- Commercial and Industrial package rooftop equipment replacement and repairs.
Air Conditioning Solutions in New Hampshire
Stay cool during humid summers with our expert cooling New Hampshire services. As a Mitsubishi Electric Diamond Elite Contractor, we offer top-tier air conditioning solutions with a 12-year parts and labor warranty. Our services include:
Our services include:
- AC Installation and replacement
- AC Repair and maintenance
- Commercial and Industrial package rooftop equipment replacement and repairs.
Explore The
Comfort Zone 
The Monadnock Region’s First and Only Mitsubishi Electric Ductless HVAC Showroom!
Why the NH Community Has Trusted Us for Over 50 Years
Family-Owned and
Operated
As a family-run business, we’re committed to giving each project and customer the personal care and attention they deserve.
Certified
Experts
As a Mitsubishi Electric Diamond Elite Contractor, we offer top-tier ductless mini-split systems with the added peace of mind of a 12-year parts and labor warranty.
Fully Interactive Showroom
Our “Comfort Zone” showroom lets you experience Mitsubishi Electric’s ductless systems up close before deciding.
Customer Satisfaction
Comes First
With over 300+ five-star reviews, it’s clear that we go the extra mile to make sure our customers are happy.
Full Range of HVAC
Services
From installations to repairs and maintenance, we offer everything you need to keep your heating, cooling, and air quality systems in shape.
Going
Green
We’re passionate about sustainability and do our part by participating in environmentally-friendly initiatives.
Brands & Partnerships
The Diamond Elite
Difference
As a Mitsubishi Electric Diamond Elite Contractor, we represent the top tier of quality and service. We earn our “Elite” designation by ensuring that our certified technicians are trained with up-to-the-minute information and skills for the installation and service of Mitsubishi Electric Heating & Air Conditioning system, offering our extended warranty, and maintaining the highest level of customer satisfaction.
free initial
consultation
We work with you to determine the most efficient design to meet your comfort needs at a cost that represents a value to you.
Your design consultation is obligation-free and costs you nothing except an hour or so of your time. You’ll have a complete installation proposal, with no hidden costs, in hand before we leave.
Some exclusions may apply. Call for more details.
Saving You Money & the Environment:
Why Choose High-Efficiency
HVAC Systems
1
Energy
Savings
Air-source heat pumps can reduce energy use by up to 30% since they move heat instead of generating it. (Source: U.S. Department of Energy).
2
Lower Carbon
Emissions
Heat pumps cut carbon emissions by at least 20% compared to gas boilers. (Source: International Energy Agency)
3
Better Indoor
Comfort
High-efficiency systems improve temperature control and air quality, maintaining comfort even in colder climates.
4
Financial
Incentives
Homeowners in New Hampshire can qualify for rebates and incentives through programs like the Inflation Reduction Act (IRA) and ENERGY STAR®.
The Impact of Choosing a Quality HVAC Contractor in New Hampshire
Did you know that 90% of HVAC units are installed incorrectly, wasting energy and making your home less comfortable?
That’s why choosing the right contractor matters! We’re part of the 10% that gets it right every time. When you go with a professional, your HVAC in New Hampshire will be properly installed and running at its best to save you money and keep your home comfy all year.
The Locally Trusted Choice for Over Half a Century
Jacki
Position
Lance, Jordan, Keanan, Greg and the whole team were great! From sales to finalizing the installation, I couldn’t be more pleased. The Bergeron team were interested in learning about what system would make me comfortable in my home. They answered all my questions. The installation team was professional, polite, efficient and conscientious. They took care of my home throughout the installation—on a day when the weather didn’t make it easy. Thanks guys!!
Aaron Rivkin
Position
K E Bergeron has provided exceptional service from their initial assessment to installment of our [Mitsubishi Electric] heat pump systems. Tom and Monique were thorough and straightforward about the process and the cost and offered a quote at the end of their assessment. The operational team was communicative prior to installation. Jesse and his team were incredibly efficient and respectful of our home and were very clean and tidy. The team was courteous and excellent problem solvers. They installed 5 indoor units and 3 outdoor units in less than a day. At the end of installation Jesse provided us with superb guidance of how to best use our new system. We are so appreciative of the entire team and would highly recommend them for this work. Their customer and technical service exceeded our expectations. To note, we chose K E Bergeron after diligent exploration (7 total assessments) and are so, so glad we chose them to do this work in our home.
Richard B (FastSailR)
Position
Even more positive reviews will be forthcoming. But I can say that Mr. Jesse Fish and the entire Bergeron team, including Lance LaFontaine, Nils Ahlberg, Keenan Jasmin, and several others (including the electrical contractors) were excellent to work with. Highly professional, obviously skilled in their trades and knowledgeable of these new technologies. They communicated clearly and left my residence in better shape than when they arrived. The fact that this large project was completed in one day was amazing. I highly recommend Bergeron and this team to anyone! Now, with the [Mitsubishi Electric] heat pumps running, and in very cold conditions, my house is warmer than its has been in years. Tom Harrington was great to work with as he investigated our residence, performed a thorough load calculation and specified the equipment to be installed. Thanks, team!!
Ray Anderson
Position
I am very pleased with KE Bergeron Mechanical. The installation team led by Jesse, the inside technical support from Ryan, and sales support from Tom made this a great experience. There is a great team in the office who are very prompt in getting answers or having someone call you back. Very professional!
MW TERRY
Position
Crew arrived on time, were very careful about keeping the house clean during the work. They did a great job keeping us informed of their progress. Everyone was extremely polite and respectful. I would call them again for any of our heating and cooling needs in the future.
emily ward
Position
Jason came to show me how to take out and clean the filters on my [Mitsubishi Electric] mini split. He was very friendly and professional , thoroughly explained and showed me how to do it. I was happy with service and highly recommend.
Richard Lynch
Position
"I want to thank all the people of Bergeron Mechanical that made our experience of a new Bryant HVAC system a pleasure. From meeting with Caleb for trying to fix a heating system that didn’t want to be fixed. Mike who explained everything, Eric guided us in getting a new system .Greg quickly set up installation.Then Lance,Adam,Keenan,John and Jorden worked as a team to remove the old system ( dig out the frozen pad ) and replace the new furnace and air conditioner unit in one day . Then again John and Jeremy came the next day to do the finishing touches. The whole TEAM was just so awesome and caring, they went above and beyond doing a professional job . Kim got the right guys Thank you again"
Areas We Serve
YOUR COMFORT IS OUR PRIORITY!
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Free Resources for New Hampshire Home and Business Owners
4 Top-Rated Residential HVAC Systems for Energy Efficiency and Comfort (2025)
After more than 50 years of helping New Hampshire & Vermont homeowners stay comfortable through ice storms and heat waves, we’ve learned a thing or two about what makes a residential HVAC system truly reliable. There are plenty of options out there, but not all of...
THE IMPORTANCE OF CHANGING AIR FILTERS REGULARLY
As a homeowner, it’s easy to overlook the little things that keep your HVAC system running smoothly. One of the most important of these is changing your air filters regularly. Here are some surprising benefits of this simple task: 1. Improved Indoor Air Quality The...
THE BENEFITS OF INSTALLING A WI-FI THERMOSTAT
In today’s world of smart technology, our homes are becoming more connected and convenient. One such innovation that’s transforming the way we control our indoor climate is the Wi-Fi thermostat. These smart devices offer numerous benefits that go beyond just adjusting...
INADEQUATE HVAC SIZING AND INSTALLATION: A COSTLY MISTAKE FOR 90% OF HOMEOWNERS
https://vimeo.com/873761722 90% of HVAC systems are incorrectly sized and incorrectly installed. Here's an example of a customer who chose to work with another contractor based on a low upfront price, yet they paid more in cost to get things fixed.
