Elite Heating & AC Services

Serving Southern New Hampshire and parts of Massachusetts since 1998

We are your heating and A/C installation, maintenance, and repair specialists focused entirely on your satisfaction.

Prevent future damage with scheduled maintenance


When it comes to summer, having a reliable cooling system is vital to the overall comfort of your home. From air conditioning tune-ups to system replacement, our professional, experienced staff will have your peace of mind at the top of ours.


We have made it our number one priority to offer affordable heating repair service and heating installation. We employ the best technicians, who are background-checked and dedicated to ensuring you are most comfortable.

Indoor Air Quality

With little opportunity to open windows, contaminants are trapped inside, and everything from moisture levels, cleaning agents, and personal hygiene products to pesticides, pets, and home furnishings add to indoor air quality concerns.

Commercial HVAC

We specialize in commercial HVAC design/installation, equipment upgrades, seasonal maintenance, and repair of all makes and models of heating, cooling, and air quality systems.

Family Operated HVAC Company

Absolute Mechanical Systems specializes in everything HVAC, ensuring the right solution to any challenge. Established in 1998, we are a family run company, entirely focused on your satisfaction. We offer our Residential, Commercial, and Industrial clients affordable, trustworthy, and extensive Heating, Ventilation, Cooling, Air Quality, and Water Heating services across New Hampshire and Massachusetts. Our range of industry-leading products and expertise deliver exceptional value, convenience, efficiency, and long-term rewards.


Whether you’re looking for new construction HVAC installation, non-invasive retrofit, proactive maintenance, or skilled repair, the NATE-certified team from Absolute Mechanical Systems handles all makes and models of HVAC systems, air quality accessories, and water heaters. We partner with such well-respected manufacturers as Rheem, Aprilaire, Fujitsu, and Diafi to provide unequalled innovation and reliability.

AC Repairs, Heating Repair, Air Conditioning Service, HVAC Service & Heating and CoolingBrookline, NH, Milford, NH, Nashua, NH, Amherst, NH, Pepperell, MA & Hollis, NH

Call on our team for all your HVAC services throughout Southern New Hampshire and parts of Massachusetts!

Give us a call at (603) 249-9800, and we’ll not only simplify the start-to-finish project but serve your best interests in every way. And because our dedication doesn’t end with the regular workday, we’re always here to help, 24/7, with Emergency Service for heating repair and A/C repair throughout Brookline, NH, Hollis, NH, Milford, NH, Townsend, MA, Pepperell, MA, Amherst, NH, Wilton, NH, Mont Vernon, NH, Greenville, NH, Groton, MA, Ashby, MA, Dunstable, MA, Lunenburg, MA, and Nashua, NH.

Furnace Repair Near Me & AC Repairs in Milford, NH | Furnace Replacement in Hollis, NH | Furnace Repair Amherst, NH

Air Conditioner ReplacementFurnace Repair Near MeDuctless Mini SplitFurnace RepairFurnace Installation ∴ Pepperell, MA ∴ Milford, NH ∴ Amherst, NH

Our Happy Customers

Don’t take our word for it, here’s what our clients have said about Absolute Mechanical Systems

Write a Review

We were so pleased with the service and attention to detail. The staff and installers were amazing.

J. Faucher

Outstanding service second to none. Quick response, and never a hassle. They do quality work at a better than fair price. Highly recommend for heating and ac needs.

D. Gorgolione

Without question, the very best experience I’ve ever had with any specialty service business. If you live anywhere near Brookline and are in need of these types of services, I strongly recommend going to Absolute first.

S. Huffman

Request a Quote


If you're looking for more value from your HVAC contractor, Absolute Mechanical Systems will deliver it. Browse our current financing offers and see how we can help you.

Financing Offers

Complete Residential & Light Commercial HVAC Services