EXCELLENT
56 reviews on
robert major
robert major
March 20, 2024.
Dave performed service on my hydronic heating system and an issue we had with our gas fireplace. Everything was performed as requested. Dave has a vast knowledge of his profession and it shows in is work. Highly recommended.
Adam Rogowski
Adam Rogowski
March 15, 2024.
Working with Dave, his wife, and their company was great! Quick, professional service - on a weekend ! I would highly recommend this company to anyone! I can’t say enough about how happy I was with their service !
Goose Pond Inn
Goose Pond Inn
March 8, 2024.
We had David install a new boiler and hot water tank in our bed and breakfast. It was a monumental task that included the removal of the old equipment from a very small basement and splitting rooms so they could be on separate zones. He has amazing attention to detail and his work is spectacular and neat. Everything was at the time he stated and on budget. We are very pleased with our unit and the work completed. We highly highly recommend him for you're heating and cooling needs.
Paul R
Paul R
March 8, 2024.
David is very experienced. Fix an issue I've had for a year.
Richard Brewer
Richard Brewer
March 2, 2024.
David Sellers Mechanical has installed two heating/cooling systems for us. The first in an 1836 house and we wanted to be very careful that the system did not take away from the feel of living in an old house. Dave provided the perfect installation and made the room units practically invisible. We have been very happy with that installation. Recently, we called him back for a new mini-split heat pump system for a cottage on our property. We needed the job done rather quickly, and Dave came to the rescue. Installation was professional, clean, and exactly as we had hoped. We would not hesitate to recommend this company.
Today's Project Guide
Today's Project Guide
November 21, 2023.
Very knowledgeable and professional. Was able to answer some brief questions and offered emergency services to the establishment I’m running during our time of need. Unfortunately I’m not the owner of said establishment BUT! this type of dedication and professionalism isn’t very common in the commercial sector. His wife was very friendly and knowledgeable. Seems like a very trustworthy and honest company to deal with.
Tim Munro
Tim Munro
November 16, 2023.
David and his team were very accommodating to my schedule. He installed five units in a new home I was building. They first roughed in the units then, after I did insulation, drywall and taping, they returned to finish the install. He and his crew were on time each day and worked the entire day. David was on site the entire time keeping everyone on task. I am very happy with the workmanship and professional job they did. I would highly recommend David.
Juliane Miller
Juliane Miller
November 3, 2023.
David Sellers is the only one who knows how to service my munchkin boilers! He is honest, reliable, excellent communication and a pleasure to deal with. Always professional and would highly recommend him!!
Kathy Kilpatrick
Kathy Kilpatrick
October 26, 2023.
Very nice experience. Like a breath of fresh air. Love my new system. We just tried the heat it was Smooth transition . Couldn't ask for anything more.
Thomas Miller
Thomas Miller
October 19, 2023.
Dave and team did an outstanding job on 2 different installations. The heat pump units perform as expected and the installation were done with care, skill and judgement pertaining to the esthetics of the units and our home. I am very sensitive to professionals doing high quality work and Dave was a "rockstar"!

We serve Warren, Washington and Saratoga Counties, New York

We serve Warren, Washington and Saratoga Counties, New York

A note from Rebekah Sellers:

Like home movies?

I reduced to a 12 minute video my husband Dave Sellers’ mechanical life story (starting when he was 5), with a sampling of some of his projects. You can watch it here:

David Sellers, Master Mechanic

OK, I’m biased–I love the guy…

But Dave is truly a passionate and gifted mechanic. He sure is handy to have around the house! 🙂

His background is in the printing industry downstate. In between his printery jobs in the 1970’s & 80’s, he also worked for a heating company that specialized in solid fuel boilers (wood, coal, waste oil).

In 1989, we decided to settle in the Adirondacks. As you probably know, factories are literally outlawed here, so there weren’t many Printing opportunities for Dave.

…So he naturally got into the Building Mechanicals field, designing and installing heating, cooling, and snowmelt systems.

And the rest is history. Dave’s been a Building Mechanicals designer and installer nonstop since then.

His experience ranges from commercial and industrial to large and small residential, and now he’s getting into the wave of the future: geothermal and solar applications.

Dave is well-known in the Capital, Saratoga, and Adirondack Regions (and beyond) for saving the day with his knack for troubleshooting.

But my mission is to help you PREVENT troubles by equipping you to Choose Your Options Wisely, and Hire Smart!

That’s why I loaded this website full of not only heating options, but hiring guide info.

This will help you any time you’re thinking of getting help for any type of home improvement project in the future as well.

If you have a chunk of time to research all at once, simply click here to start on our home page and select the photo that best describes your needs.

Pressed for time?

BEFORE you sign the dotted line with a Builder or General Contractor, you NEED to read the Consumer Alert here:

New York Takes a Stand Against Unlicensed Contractor Rip-Offs

Thanks for stopping by, and I hope this helps!

Glens Falls, NY 12801
(518) 623-9760

Saratoga Springs, Glens Falls, Lake George, New York Area and Beyond Mechanical Contractor.
We design, install, and repair:

  • Radiant heating
  • Boilers
  • Furnaces
  • Water heaters
  • Solar water heaters
  • Geothermal heating systems
  • Cooling systems
  • Snowmelt for walks and driveways

David Sellers’ continuing education in the latest Building Systems Science (click here for more info) ensures you’ll get the job done right the first time

He designs and installs the most comfortable, safe, and cost effective system for your home. The brands we recommend include but are not limited to:

  • Lochinvar
  • Heat Transfer Products
  • Buderus
  • Lennox
  • York
  • Daikin
  • Water Furnace
  • Tekmar
  • Watts Radiant
  • Onix
  • Pex

We also specialize in Munchkin boiler troubleshooting.

Don’t forget to ask us about our most popular financing solutions:

  • 12 Months No Interest & No Payments
  • 9.99% Fixed APR

Our service area covers these New York Counties:

  • Warren County, NY
  • Saratoga County, NY
  • Washington County, NY
  • Albany County, N
  • Rennselaer County, N
  • Schenectady County, NY


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Looking for a Saratoga Springs, Glens Falls, Lake George Area Mechanical Contractor? Please call us right now at (518) 623-9760 for a FREE heating, air conditioning, or snowmelt consultation!