Verified record
Typical Greater Boston range for this kind of work, from regional averages — not a quote from De Mechanical LLC. 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
De Mechanical LLC works out of Norwood, handling plumbing, heating, and air conditioning jobs across the towns south of Boston — Needham, Wellesley, Newton, Dedham, Westwood, Walpole, Medfield, and Stoughton, by its own account. Nearly every review names the same person, Elvis, and one customer says they've called on him for over seven years. The pattern running through the record is boiler and water heater work, done quickly and explained along the way. A 2025 review describes a new boiler installed within a few days of the first visit; a 2023 review credits Elvis with converting an oil boiler to gas in two days. A more recent review from July 2026 describes converting a home from oil heat to a two-zone central air system with minimal disruption to the house. More than one reviewer over the years says his pricing came in lower than other plumbers' estimates. Two recent reviews break from that pattern. A September 2026 review describes waiting several days without a response and calls the business unreliable — though the same review goes on to say it would still recommend them, an odd mix worth reading yourself. A separate review from July 2026 reports a job that left leaks still present afterward, with no further detail on whether it got fixed. Neither is typical — the other 27 reviews run five stars across four years — but both are recent enough to ask about directly. For a boiler swap, water heater install, or general plumbing or HVAC repair with the same technician each visit, De Mechanical fits what reviewers describe. Worth confirming the two recent complaints got resolved before booking.
Unreliable! I’ve waited several days to hear back from them without response. I do recommend this business.
Had a great experience with Elvis and DE mechanical for an HVAC service. They were prompt and honest to make the process go seamlessly and didn’t attempt to sell anything extra. Highly recommend.
Elvis from DE Mechanical serviced our 6.5-year-old State/Takagi tankless water heater and was so user-friendly to work with. He performed a descale, maintenance, and replacement of the flame sensor. At the end of his initial visit in the morning (he arrived promptly when he said he would), Elvis did a test run to ensure the hot water was working, which it was. However, the unit stopped producing hot water later the same day. I called Elvis at 9:30pm, he came to our house 20 minutes later, diagnosed a clogged filter caused by the loosened scale, cleaned it, and had the system running fine again in about a half hour. I appreciated both his technical knowledge of tankless water heaters and his willingness to come back immediately to make sure everything was working correctly for us. I would use DE Mechanical again, and recommend Elvis.
Elvis and his team did an outstanding job converting our home from oil heat to a two-zone central air system, with one unit in the basement and one in the attic. The installation had minimal impact on the rest of the house, and they even removed the old furnace and cleaned up the old piping, leaving everything neat and tidy. Elvis kept me informed throughout the entire process, explained what was happening, and asked for my input whenever decisions needed to be made. He and his partner were professional, respectful, efficient, and always on time. The quality of their work and attention to detail were excellent. I highly recommend Elvis and his team to anyone looking for HVAC or plumbing work!
Did a terrible job, leaks everywhere still
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2 changes recorded — last scanned Sep 8, 2026.
Panel upgrades4.8
Fast emergency response4.7
Water heater specialist3.5