Verified record
Encon Commercial Services is a Danvers-based commercial HVAC contractor — though the story here starts with an unusual wrinkle: the company's own website (enconcomserv.com) now presents as Breen & Sullivan Mechanical Services, a Wilmington, MA outfit doing commercial HVAC, electrical and plumbing work across the greater Boston metro, following an announced partnership between the two firms. Anyone searching for Encon today is effectively looking at Breen & Sullivan's operation. The self-reported history runs deep — the site describes 34 years in business and says the now-partnered Breen & Sullivan has served building owners across Massachusetts since 1992. It also lists affiliations with IFMA, BOMA, IREM and AEE, trade groups common among commercial facilities contractors, and describes itself as part of the Service Logic family of companies. Public feedback is thin: Google shows 3.8★ from just 4 ratings, and only two written reviews are on file. A January 2026 review called the service fast and friendly and said the reviewer would recommend the company to anybody. Set against that, a 2023 review described a leak test at a commercial property that was quoted $600-$800 but ended up billed for hours beyond that range across two visits — the reviewer's advice was to get pricing in writing before work starts. Before calling, it's worth confirming exactly which entity you'd be contracting with given the Breen & Sullivan rebrand, and pinning down a written estimate given the 2023 billing account. For a straightforward commercial HVAC call in the Boston area, this reads as a long-running shop — just go in with clear paperwork.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Encon Commercial Services. 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
Fast and friendly service.This company is awesome.I would recommend him to anybody
Be very wary of this company and get estimates for work in writing - we had them do a leak test at our business for which they quoted $600-$800 if no repairs were needed - we gave them a $150 deposit to start the job. They came for the first day and completed the test and charged us for 2 hours of work they were not there for 2 hours - but I'm not disputing that but then AFTER their guys had told us the work was completed and no issues were found they came for the inspection several days later and charged us for 5 hours of labor. Having uses contractors before I understand many have a minimum charge whenever they show up - ok so I'm not disputing for 2 hours on the second day but adding 3 hours to that when the work was already completed and they just stood there while the inspector put the seal on is price gauging.They then invoiced us for $1,105.50 which did not include our deposit and I was shocked that a simple leak test quoted at $600-$800 turned into a 7 HOUR $1,105.50 job so I contacted them or I should say I tried to contact them several times and got no response, no response, no response finally got a response months later they said the bill was correct I told them it did not even reflect the deposit we gave them so then 4 months later they send us a bill that reflects the deposit but won't even talk to us about the 7 HOUR labor charge and discrepancy from the quote they gave us - I paid the balance of the invoice minus the price gauging 3 hours so they got a total of $744.25 from us. They have now sent us to collections for $361.25. Be very leery of this company.
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Established 3.0 rating
Turns down unneeded work4.7
Same-day emergencies4.4
Called go-to for piping3.4