Mont Vernon, NH
HVAC Company in Mont Vernon, NH
When you need dependable heating and cooling services in Mont Vernon, NH, Brookside Heating & Cooling is the name your neighbors trust.
- BBB Accredited Business with an A+ rating
- NAHB member offering new construction HVAC installations
- 24/7 emergency service available
Our Services
HVAC Services in Mont Vernon
We handle everything from routine maintenance to full system replacements and new construction HVAC installations.
Air Conditioning
AC repair, installation and replacement, maintenance, and ductless mini-split services for Mont Vernon homes.
Heating
Heating repair, installation and replacement, maintenance, and gas and oil furnace, boiler, heat pump, and geothermal services.
Air Quality
Air purifier and humidifier installation to help Mont Vernon homeowners breathe easier.
New Construction
HVAC design and installation for custom homes, larger residential developments, and commercial properties.
Why Choose Us
Why Choose Brookside Heating & Cooling?
For over 35 years, Brookside Heating & Cooling has been the go-to HVAC company for homeowners and business owners throughout Southern New Hampshire.
BBB Accredited, A+ rating
We are a BBB Accredited Business with an A+ rating.
NAHB member
We are a proud member of the National Association of Home Builders, offering new construction HVAC installations.
24/7 emergency service
Our team is available 24/7 for emergency service.
Tenured technicians
Our technicians have been with the company for over six years.
Reviews
See what your neighbors are saying
Brookside is without comparison for responding rapidly, with technicians who are polite, efficient, and willing to educate as they fix the problem.
4.9from 252 reviews onGoogle
“Came on time, eval was very thorough, was communicative, pleasant, polite, explained all the options, seemed well educated in the mechanics, left after diagnosis and came back same day to make repairs.”
Robby Rix
October 2026
“The technician came right out. He was very polite, knowledgeable, and was able to fix the problem quickly.”
Gina Johnson
October 2026
“I’ve always loved the Customer Service at Brookside Mechanical, and today was no exception. Jon did a fantastic job checking my furnace for annual maintenance and he explained everything so I would have no questions.”
Susan Lazos
October 2026
“Great customer service. Techs are on time, knowledgeable and very friendly to work with.”
Anne Leduc
September 2026
“I’ve been a long time customer of Brookside Mechanical for a long time. Johnny Mac did a great job diagnosing our thermostat issues and installing updated equipment in our home. Another fantastic job by Brookside Mechanical!”Read the full review
Allison Twite
September 2026
Review 1 of 5
Frequently Asked Questions
Does Brookside Heating & Cooling offer HVAC installation for new construction homes?
Yes. Brookside Heating & Cooling is a proud member of the National Association of Home Builders and offers expert HVAC installation for new construction. Whether you are building a custom home, larger residential development, or commercial property, our team works closely with builders to design and install heating and cooling systems that meet your project's specifications.
Does Brookside Heating & Cooling offer emergency HVAC repair?
Yes. We offer 24/7 emergency HVAC repair service throughout Mont Vernon and Southern New Hampshire. If your furnace breaks down on the coldest night of the year or your air conditioner fails during a heat wave, our team will respond quickly, and we'll get your system back up and running as fast as possible.
Should I replace my heating system?
Many Mont Vernon homes were built in the 1990s or earlier, so if your heating system is original to the home or more than 15 to 20 years old, it may be time to consider a replacement. Newer systems are typically more energy-efficient and reliable, helping reduce utility costs and improve comfort. A professional evaluation from Brookside Heating & Cooling can determine whether repair or replacement is the better long-term investment.
Is an HVAC maintenance plan worth the cost?
Yes, because investing in routine HVAC maintenance offers member-exclusive discounts and helps prevent costly breakdowns. Brookside Heating & Cooling's Premier Comfort Maintenance Plan is available at $40 a month for the standard plan and $55 a month for the premium plan with a 12-month commitment.
What's the difference between heat pumps and ductless mini-splits?
A heat pump provides both heating and cooling by transferring heat rather than generating it, and a ductless mini-split is a type of heat pump that delivers heated or cooled air directly to individual rooms without ductwork. In Mont Vernon, Brookside Heating & Cooling finds ductless mini-splits popular for older homes, additions, and zoned comfort, while heat pumps can also be installed as central systems connected to existing ducts.
Still not sure? Call (603) 691-2106.