Consider the many benefits of oil to natural gas conversion. You’re never going to run out or need to arrange your life around a delivery schedule. There’s no interruption because of a power outage. Natural gas heats up with no waiting, is clean, low in maintenance, and opens up convenient possibilities such as water heating, swimming pool heating, hot tubs, outdoor grills, and clothes dryers. Give Absolute Mechanical Systems a call at (603) 249-9800 for Oil to Gas Conversion in Southern New Hampshire and parts of Massachusetts. We’ll trim your budget and make sure your home is perfectly warm on the coldest nights.

Call today for oil to gas conversion services!

While the switch from oil to gas heating isn’t a do-it-yourself project, the process is far less involved and way more affordable than you might think. Energy savings and added value to your home definitely recover the investment. And Absolute Mechanical Systems makes sure every detail is handled properly and to exacting standards of quality. Our NATE-certified technicians are highly trained, in-field experienced, and prepared for any challenge. We deliver safe, reliable results without major disruption to your home. Absolute Mechanical Systems is here to help improve comfort 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

Our Happy Customers

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

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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.

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