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Denommee's Google page shows 472 ratings averaging 4.7 stars, and the reviews keep naming the same crew — Phin, John Teal, Nick, Drew, Phil — for plumbing, HVAC and electrical work out of Tyngsborough. Its Massachusetts plumbing license checks out as active against the state registry. The company's Better Business Bureau file tells a different story, though: a D- grade with two complaints on record, worth knowing about before the estimate call. Customers who've stuck around describe the kind of relationship a home-services company wants — one reviewer has used them for 18 years, another for 10, both citing consistent value and responsiveness across dozens of calls. The work described ranges from routine (a new toilet, a tankless water heater tune-up) to substantial: a main water line dug out and refurbished rather than simply patched, a 40-year-old boiler and dead mini-split replaced in a full heating-and-cooling overhaul, and an electrical assessment that added ten GFCI outlets and six smoke/CO detectors. A Reddit thread and a separate MassSave heat-pump discussion both name Denommee approvingly, echoing the same pattern. The pattern worth flagging is pricing on bigger HVAC jobs. A recent review describes a $3,535 estimate to replace an AC motor that the customer's own HVAC-industry family priced at $1,000–$1,300 — about three times the going rate. In a 2025 review, an emergency furnace call ran up a $550 charge for a part the customer says was already replaced, then the same technician returned and proposed $2,300 more before the customer took the job elsewhere for far less. A separate 2025 review describes being asked to pay $100 just to get a rough estimate on a bathtub install. None of this shows up in the routine plumbing calls, which read as straightforward and fairly priced — the concern is specific to bigger-ticket HVAC and emergency-repair quotes. For everyday plumbing, the record here is deep and consistent; for a furnace, AC or full HVAC replacement, get a second, itemized quote before signing anything.
“Had good luck with David Murphy and Denommee.”
“It was a company called Denommee and we were happy with their work and price!”
Phin was a pleasure to work with and showed up on time and performed the work in a timely manner for several plumbing jobs at my home. Would highly recommend Denommee Plumbing for any of your plumbing needs.
Thank you so much Drew! Great job and great service!
Phin is great, provided plumbing services. He changed the mane line coming from the water meter. He went over and beyond and refurbished the pipe to where it looks new, replaced the old rusted leaking pipe, cut through the ceiling sheetrock and power vac the mess. It was as if he wasn't here. Very time efficient and very professional. I truly enjoyed being serviced by phin and Denommee plumbing. Going on 10 year in counting.
We’ve used Denommee Plumbing for several different jobs over the years, and every experience has been excellent. Most recently, Phin came out to diagnose a leaking shower. He quickly identified where the water was coming from, explained the issue in a way that was easy to understand, recommended the best repair approach, and completed the work efficiently. Phin is personable, professional, and clearly takes pride in doing the job right. Before leaving, he walked me through everything he had repaired so I knew exactly what had been done. He also pointed out another potential plumbing issue that wasn’t causing problems yet, but could become one down the road. There was absolutely no pressure—he simply explained what he found, offered to put together a quote, and said we could schedule another visit if and when we decided to move forward. It’s refreshing to work with someone who is knowledgeable, honest, and focused on helping the customer make informed decisions. I wouldn’t hesitate to recommend Phin and the team at Denommee Plumbing and will definitely continue using them for future plumbing needs.
Phin did an excellent job finding the leak in our shower and sealing it. We are very happy with his services!
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Certified attributes are verified against the public registry. Others are the business's own statement.
1 change recorded — last scanned Aug 16, 2026.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Denommee Plumbing, HVAC & Electric. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$290 – $710
Typical plumbing job around $500
Cast iron repiping3.7
Fourth-generation Master Plumber3.6
Broad project mix3.5
