Tankless water heating offers far superior efficiency, saving you money every day. Water isn’t stored in a bulky tank, continually reheated, absorbing contaminants and resulting in standby energy losses. There’s no fear of flooding due to a ruptured tank, and you’ll enjoy clean, unlimited hot water. There’s no waiting for water to heat up, and enough for multiple showers and appliances to run simultaneously. The system takes up far less space, allows versatility in mounting location, and typically doubles the lifespan of conventional tank-style water heaters.

Call our team for tankless water heating solutions you can count on!

Is tankless water heating right for your household? The professionals from Absolute Mechanical Systems provide knowledgeable recommendations, seamless conversion, and proper installation of top quality products. We answer the specific demands of your lifestyle and home, and protect your investment with skilled workmanship and outstanding manufacturer’s warranty support. Get in touch with us at (603) 249-9800 for prompt response and quick turnaround. We offer affordable water heating services, including proactive maintenance, repair, and 24/7 Emergency Assistance throughout Southern New Hampshire and parts of Massachusetts.

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

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

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