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
- Temperature
- Precipitation
- Rain Chance
- Wind
- Humidity
- Pressure
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 Mitsubishi Electric mini-split 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
Areas We Serve
YOUR COMFORT IS OUR PRIORITY!

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Free Resources for New Hampshire Home and Business Owners
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.
THE ULTIMATE GUIDE TO DUCTLESS MINI SPLIT SYSTEMS: ENERGY EFFICIENCY AND MORE
When it comes to keeping your home comfortable, you have a wide array of options to choose from. Among these options, ductless mini-split systems have been gaining popularity for their energy efficiency and versatility. In this guide, we’ll take a closer look at what...