Boiler Service, Boiler Repair & Boiler ReplacementAshby, MA, Groton, MA, Greenville, NH, Wilton, NH, Brookline, NH & Hollis, NH

Are you looking to install, upgrade, maintain, or repair a residential or commercial boiler in Southern New Hampshire and parts of Massachusetts? Contact Absolute Mechanical Systems at (603) 249-9800 for prompt, expert, and affordable service. Our NATE-certified technicians are highly trained, in-field experienced, and outfitted with state-of-the-art technology. For any challenge, we deliver turnkey solutions.

Professional Boiler System Installations, Repairs & Maintenance

The versatility of a boiler system can’t be matched. Radiant flooring, baseboard heating, and streamlined radiators are just the beginning. Supplement your water heating needs. Link the boiler to a snow melt system or heat your pool. These wonderfully quiet, exceptionally durable, low-maintenance, and high efficiency systems offer the opportunity for easy zone control, provide very gentle heating, maintain even temperature, and keep a clean, healthy indoor space.

Call on our team for all your boiler services!

Whatever your boiler needs, let’s get everything right. Absolute Mechanical Systems serves your best interests through higher standards of job performance and equipment. We’re here to resolve any challenge, at any time, 24 hours a day, 365 days a year with Emergency Service across 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.

Serving Southern New Hampshire and parts of Massachusetts

Boiler ServiceBoiler ReplacementBoiler Repair

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

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Special Offers

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

More Special Offers

With new installation of Furnace & AC you get TWO FREE items below:

Whole house air cleaner
Humidifier
Programmable Thermostat
Wifi Thermostat


(603) 249-9800

Not valid with other offers or prior services.

With new installation of Furnace you get ONE FREE item below:

Whole house air cleaner
Humidifier
Programmable Thermostat
Wifi Thermostat


(603) 249-9800

Not valid with other offers or prior services.

Complete Residential & Light Commercial HVAC Services