Verified record
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Advanced Mechanical Systems Inc.. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$5,000 – $11,400
Typical HVAC project around $8,200
Advanced Mechanical Systems has been putting in heat pumps and furnaces around Stow, Massachusetts since the company says it opened in 1996, offering plumbing, heating and air conditioning work across New England. One reviewer needed no persuading on that history: a 2024 review said they'd used AMS for more than 30 years and referred friends and family the whole time. The jobs reviewers describe most are the big ones — full heat pump conversions, furnace-and-AC replacements, and a 2026 review of a multi-crane air conditioning install that called the crew's coordination impressive from start to finish. AMS also handles plumbing calls that come up alongside HVAC work: water heater swaps, a radiant-boiler valve leak, a frozen-pipe repair. One customer credited the office staff with walking them through MassSave rebate paperwork on a heat pump job, and several reviews name the same technicians by name — Joe, Danielle, Christian, Bobby — rather than describing a rotating crew. Two issues are worth asking about before you book. A 2024 review describes an unresolved dispute after plumbing work drilled through floor joists, which a building inspector said needed reinforcing to keep tile from cracking. A 2021 review said the refrigerant in a $12,000 ductless system was largely gone within three years and that a follow-up visit couldn't diagnose why; a separate 2022 review needed callback visits to correct an install before calling it done right. AMS says it's a Carrier factory-authorized dealer with Carrier air quality and IGSHPA certifications, and Google shows a 4.7-star average from 134 ratings alongside a BBB A+ grade. For a heat pump swap or a bundled plumbing job, this looks like a company its regulars keep calling back — just ask about the joist repair and how they handle refrigerant issues that show up after the install.
“Advanced Mechanical Systems AMS”
I recently had Joe Bolinsky from Advanced Mechanical Systems install and finish a mini-split system at my home, and I couldn’t be happier with the result. Joe was professional, knowledgeable, and easy to work with throughout the entire process. The work was completed quickly and efficiently, with great attention to detail. He made sure everything was done right, and the finished installation looks excellent. It’s clear Joe takes pride in his work and stands behind the quality of what he does. I highly recommend Joe and Advanced Mechanical Systems to anyone looking for reliable HVAC service in Massachusetts.
I've used Advanced Mechanical Systems to service my furnace for the last several years and will continue using them without any hesitation. Twice in the last couple of years, I've had pin hole leaks in different expansion tanks on my boiler and hot water heater and on both occasions AMS has sent techs out the same day to fix and replace the tanks. Most recently, AMS handled replacing the tank under a factory warranty without any questions. AMS' technicians are personable, knowledgeable, professional and have answered virtually every question I've had about by complex HVAC system. I would highly recommend using AMS for any HVAC or plumbing project.
I used Advanced Mechanical for a total system replacement a few weeks back. I was thoroughly impressed with Joe in our meeting. He went over several things that I didn’t even think about considering. This company did not try to upsell me; Joe was courteous, professional and kept the meeting to a level that I could understand. Joe took the time to explain the system, timeline to install and pricing so I had no confusion. I would highly recommend this company to anyone considering a total replacement and conversion to a heat pump. I truly felt like they listened to me, recommended the best solution and did the work for a reasonable price.
I had a great experience with Advanced Mechanical Systems Inc. Bobby came to my home in Hudson (Dover Circle) for maintenance, and he did an excellent job. He was thorough, hardworking, and took the time to make sure everything was done right. I had previously hired Petro Home Services, and unfortunately, they only spent a few minutes checking things and didn’t do a good job at all. The difference with Advanced Mechanical Systems was clear right away. Bobby’s attention to detail and work ethic really stood out. I truly appreciate the effort he put in, and I highly recommend Advanced Mechanical Systems Inc. to my friends and anyone looking for reliable, quality service. -Marwan
I have a radiant system with a Viessmann wall unit (Hot water and boiler). I hadn’t serviced it for a couple years because I had other companies come and had little confidence I was getting any value. I had a valve spring a leak and called AMS. Danielle arrived and spotted the leak and talked me through the repair and issue. She offered a cleaning for the boiler and i gladly accepted. She also walked me through the boiler functionality, a few improvements I could make both physically and to the programming. She was direct, clear and a pleasure to deal with.
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1 change recorded — last scanned Aug 4, 2026.
Diagnoses before replacing5.0
Old-house expertise5.0
63 permitted projects reported2.8
Statewide heat pump recognition3.3