# Denommee Plumbing, HVAC & Electric

**Trade:** Plumbing · **Address:** 173 Cambridge St, Burlington, MA 01803 · **Phone:** (781) 272-4121 · **Website:** https://www.denommeeplumbing.com/ · **Languages:** English

**Rating: 3.8/5** (high confidence) — from 123 reviews across 5 sources.
92% of sentiment-scored reviews read net-positive. Last 6 months: 9 reviews, 0 negative.

## The honest read

When a water heater started leaking on a Saturday evening in 2023, four other plumbing companies made excuses — Denommee had someone at the door within half an hour. Founded in 1999 by third-generation Master Plumber Guy Denommee and his wife Carin, the company has grown into an 80-plus-employee operation based in Tyngsborough and Burlington, Massachusetts, covering plumbing, HVAC, and electrical work across Massachusetts and southern New Hampshire. Its Massachusetts and New Hampshire plumbing, HVAC, and electrical licenses are all active on their respective state registries.

The reviews on file are extensive — 123 since 2021, with dozens of named technicians customers single out directly: Dave Pica for leaving a job site cleaner than he found it, Joshua Luppold for walking customers through exactly what needed repair, and an HVAC technician reviewers spell various ways (Geo, Jeo, Jehovanny) for explaining how a system works step by step. A 2026 review described a burst pipe in an attached greenhouse handled after the reviewer's own maintenance contractor and the fire department both came up short, and a 2023 review described a large, complex mini-split system installed at a price the reviewer called reasonable compared to competing bids.

The reviews also include real complaints, spread across several years rather than one bad stretch. A 2025 review said a confirmed HVAC appointment was simply a no-show; another 2025 review described a mother's air conditioner malfunctioning for three years running with no response to recent contact attempts. A 2024 review called the company dishonest, describing a cheaper fix pitched first that didn't work, followed by the more expensive repair other companies had recommended from the start, after money was already spent. Pricing came up more than once: a 2024 review called a $632 waterline replacement, billed at $228 an hour, 'obscene,' and two separate reviews from February and March 2023 described plumbers who seemed inexperienced installing a freestanding tub, each spending hours on the phone or searching for parts before resolving the issue.

Denommee is a large, fully licensed plumbing, HVAC, and electrical contractor with a long list of specific, positive technician callouts — but the complaints on file are real and recent enough to take seriously. For routine and emergency plumbing or HVAC work it has a strong history; for a less common job like a freestanding tub install, ask directly about the technician's specific experience with it, and get the hourly rate in writing before work starts.

**Strengths:**
- Fast emergency response — multiple reviews cite same-day or same-hour help
- Named technicians — dozens of reviews credit specific staff by name
- Fully licensed, multi-trade — active MA and NH plumbing, HVAC, and electrical licenses
- Complex installs — a 2023 review cites a large mini-split system done well

**Concerns:**
- Missed appointment — a 2025 review cites a confirmed no-show
- Slow follow-up — a 2025 review cites years of unresolved AC complaints
- Upsell allegation — a 2024 review said a cheap fix was pitched before the real one
- Pricing complaint — a 2024 review called a $632 waterline charge excessive
- Tub install issues — two 2023 reviews cite inexperience with freestanding tubs

## Claims & citations

Every claim below is backed by real evidence rows — uncited claims are dropped in code before publication.

- The company's Massachusetts HVAC license (559-SM-B) is active on the state registry, held by Denommee Plumbing And Heating Inc _(confidence: high)_
  - [State License Registry](https://occupationallicensingandpermitting.mass.gov/madol/s/license-search-page) — “MA hvac license 559-SM-B registry-verified active — registry holder of record: Denommee Plumbing And Heating Inc”
- Guy J Denommee's Massachusetts plumber license (12702-PL-M) is active on the state registry _(confidence: high)_
  - [State License Registry](https://occupationallicensingandpermitting.mass.gov/madol/s/license-search-page) — “MA plumber license 12702-PL-M registry-verified active — registry holder of record: Guy J Denommee”
- The company's New Hampshire HVAC license (MBE0003637) is active on the state registry _(confidence: high)_
  - [State License Registry](https://forms.nh.gov/licenseverification/) — “NH hvac license MBE0003637 registry-verified active — registry holder of record: Denommee Plumbing & Heating, INC”
- Guy J Denommee's New Hampshire plumber license (3637) and Randy C Jones's New Hampshire plumber license (2729), both listed for this business, are active on the state registry _(confidence: high)_
  - [State License Registry](https://forms.nh.gov/licenseverification/) — “NH plumber license 2729 registry-verified active — registry holder of record: Randy C Jones”
  - [State License Registry](https://forms.nh.gov/licenseverification/) — “NH plumber license 3637 registry-verified active — individual licence held by Guy J Denommee, listed for this business alongside its verifie…”
- The company's New Hampshire electrician license (0547C) is active on the state registry _(confidence: high)_
  - [State License Registry](https://forms.nh.gov/licenseverification/) — “NH electrician license 0547C registry-verified active — registry holder of record: Denommee Plumbing & Heating, INC”
- The company was founded in 1999 by third-generation Master Plumber Guy Denommee and his wife Carin, and says it has grown to more than 80 employees _(confidence: medium)_
  - [Official Website](https://www.denommeeplumbing.com) — “Company history (self-reported): Founded in 1999 by third-generation Master Plumber Guy Denommee and his wife Carin, growing from a single t…”
- A 2023 review said a technician arrived within half an hour on a Saturday evening for a leaking water heater after four other companies made excuses _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSURaaEtfZVBnEAE!2m1!1s0x0:0x76890f32be2f4451!3m1!1s2@1:CIHM0ogKEICAgIDZhK_ePg%7C%7C?hl=en) — “5★ Saturday evening I find my water heater leaking. 4 other companies had nothing but excuses to come help. Until I call Denommee. About a h…”
- A 2026 review described a burst pipe in an attached greenhouse handled after the reviewer's own maintenance contractor and the fire department both came up short _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2xWdGVFbEllV0Y0YlVvNE0yaFhNVXhFVmpOeU1VRRAB!2m1!1s0x0:0x76890f32be2f4451!3m1!1s2@1:CAIQACodChtycF9oOlVteElIeWF4bUo4M2hXMUxEVjNyMUE%7C%7C?hl=en) — “5★ We had an emergency, a pipe burst in a greenhouse which is attached to our house ( even though we had heat on in there). There was no way…”
- A 2023 review described a large, complex mini-split system installed at a price the reviewer called reasonable compared to competing bids _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSURKMTVTRDB3RRAB!2m1!1s0x0:0x76890f32be2f4451!3m1!1s2@1:CIHM0ogKEICAgIDJ15SD0wE%7C%7C?hl=en) — “5★ I was extremely impressed with the crew that Denommee sent over to my house to install a very large/complex Mini Split system.   I found …”
- Reviews repeatedly name individual technicians, including Dave Pica for leaving job sites clean and Joshua Luppold for walking customers through needed repairs _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2xCMk1ua3hVR0pEYTJFelNVdDNiVGhsTUdwYWFIYxAB!2m1!1s0x0:0x76890f32be2f4451!3m1!1s2@1:CAIQACodChtycF9oOlB2MnkxUGJDa2EzSUt3bThlMGpaaHc%7C%7C?hl=en) — “5★ Change laundry faucets.  Dave Pica is the cleanest plumber I have ever had and he picked up after installing new faucets and left the are…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2xCYVNGZHJWM2gzZFZWblVrMXNSamd4VUhKa2FYYxAB!2m1!1s0x0:0x76890f32be2f4451!3m1!1s2@1:CAIQACodChtycF9oOlBaSFdrV3h3dVVnUk1sRjgxUHJkaXc%7C%7C?hl=en) — “5★ Joshua Luppold was great! Very informative, kept giving me updates and showed me the parts that needed repair and why. I appreciated him …”
- A 2025 review said a confirmed HVAC appointment was a no-show _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2tSMFFVdzBiM016UkdjNVdqaHJaekpDZVhaRFVGRRAB!2m1!1s0x0:0x76890f32be2f4451!3m1!1s2@1:CAIQACodChtycF9oOkR0QUw0b3MzRGc5WjhrZzJCeXZDUFE%7C%7C?hl=en) — “1★ Scheduled hvac appointment which was confirmed for 8-10 am but no one showed up”
- A 2025 review described a mother's air conditioner malfunctioning for three years running with no response to recent contact attempts _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT25Cc2FuWnROMjA0U0RWb1lYRmhWRXR3U0VablRWRRAB!2m1!1s0x0:0x76890f32be2f4451!3m1!1s2@1:CAIQACodChtycF9oOnBsanZtN204SDVoYXFhVEtwSEZnTVE%7C%7C?hl=en) — “1★ Hello, my mother bought an air conditioning unit in June 2021, and for the past three years, it has been malfunctioning around this time.…”
- A 2024 review called the company dishonest, describing a cheaper fix pitched first that didn't work, followed by the more expensive repair other companies had recommended from the start _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNQMUttYWdnRRAB!2m1!1s0x0:0x76890f32be2f4451!3m1!1s2@1:CIHM0ogKEICAgICP1KmaggE%7C%7C?hl=en) — “1★ Find them very dishonest.
At first they present themselves as having a solution that would save you money so you spend money on them. The…”
- A 2024 review called a $632 waterline replacement, billed at $228 an hour, 'obscene' _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSURMNU42MTV3RRAB!2m1!1s0x0:0x76890f32be2f4451!3m1!1s2@1:CIHM0ogKEICAgIDL5N615wE%7C%7C?hl=en) — “3★ The work was competently done. 632.00 to replace a waterline for an ice maker is obscene ! This is exactly 50% the cost of the new refrig…”
- Two reviews from February and March 2023 described plumbers who seemed inexperienced installing a freestanding tub, each spending hours resolving the issue _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VLcXRuSzItbzZ6S29RRRAB!2m1!1s0x0:0x76890f32be2f4451!3m1!1s2@1:CIHM0ogKEKqtnK2-o6zKoQE%7C%7C?hl=en) — “1★ Had a leak that was caused by a freestanding tub with pipe immediately below the floor breaking. They sent plumbers out who clearly has n…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VNekV3NVBJdGM3RkVBEAE!2m1!1s0x0:0x76890f32be2f4451!3m1!1s2@1:CIHM0ogKEMzEw5PItc7FEA%7C%7C?hl=en) — “1★ Had Denommee come out to fix a standing tub drain.  Plumbers that arrived were extremely inexperienced as if they had never installed a f…”
- Google shows a 4.7-star average from 149 ratings _(confidence: high)_
  - [Google](https://www.google.com/maps/search/?api=1&query=Denommee%20Plumbing%2C%20HVAC%20%26%20Electric&query_place_id=ChIJae-0Reef44kRUUQvvjIPiXY) — “Google: 4.7★ from 149 ratings”
- Specializes in Plumbing _(confidence: high)_
  - [Google](https://www.google.com/maps/search/?api=1&query=Denommee%20Plumbing%2C%20HVAC%20%26%20Electric&query_place_id=ChIJae-0Reef44kRUUQvvjIPiXY) — “Google: 4.7★ from 149 ratings”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2xCMk1ua3hVR0pEYTJFelNVdDNiVGhsTUdwYWFIYxAB!2m1!1s0x0:0x76890f32be2f4451!3m1!1s2@1:CAIQACodChtycF9oOlB2MnkxUGJDa2EzSUt3bThlMGpaaHc%7C%7C?hl=en) — “5★ Change laundry faucets.  Dave Pica is the cleanest plumber I have ever had and he picked up after installing new faucets and left the are…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSURSdGRqUlFnEAE!2m1!1s0x0:0x76890f32be2f4451!3m1!1s2@1:CIHM0ogKEICAgIDRtdjRQg%7C%7C?hl=en) — “5★ I hired Denommee Plumbing & Heating to install a brand  new half  bathroom  and l am so happy with their professional work and the end re…”
  - [State License Registry](https://occupationallicensingandpermitting.mass.gov/madol/s/license-search-page) — “MA plumber license 12702-PL-M registry-verified active — registry holder of record: Guy J Denommee”
- Specializes in HVAC / Heating & Cooling _(confidence: high)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2pGblVVVkJVbmMxZW1waE1VcDJVMDFzY2xOMVYxRRAB!2m1!1s0x0:0x76890f32be2f4451!3m1!1s2@1:CAIQACodChtycF9oOjFnUUVBUnc1emphMUp2U01sclN1V1E%7C%7C?hl=en) — “5★ Jehovanny is very professional, courteous and knowledgeable. He is exactly the technician you want servicing your HVAC system.”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSURKMTVTRDB3RRAB!2m1!1s0x0:0x76890f32be2f4451!3m1!1s2@1:CIHM0ogKEICAgIDJ15SD0wE%7C%7C?hl=en) — “5★ I was extremely impressed with the crew that Denommee sent over to my house to install a very large/complex Mini Split system.   I found …”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUN1MHI3YzB3RRAB!2m1!1s0x0:0x76890f32be2f4451!3m1!1s2@1:CIHM0ogKEICAgICu0r7c0wE%7C%7C?hl=en) — “5★ Of course the hottest day of the year is the day our AC decided to stop working - and a weekend no less! After calling 2 other places and…”
  - [State License Registry](https://occupationallicensingandpermitting.mass.gov/madol/s/license-search-page) — “MA hvac license 559-SM-B registry-verified active — registry holder of record: Denommee Plumbing And Heating Inc”
- Also offers Electrical _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2poYWMxWlRZemRRT0VWSGVsTnVRa3gwU2s1T1YzYxAB!2m1!1s0x0:0x76890f32be2f4451!3m1!1s2@1:CAIQACodChtycF9oOjhac1ZTYzdQOEVHelNuQkx0Sk5OV3c%7C%7C?hl=en) — “5★ Amazing, professional service from Denommee! George and Aiden replaced a toilet. Brian reviewed our HVAC system and Alden checked the ele…”
  - [State License Registry](https://forms.nh.gov/licenseverification/) — “NH electrician license 0547C registry-verified active — registry holder of record: Denommee Plumbing & Heating, INC”

## Ownership

- Identifies as family-owned — the business's own statement, not independently verified.

## License

Status: **active** (#559-SM-B, hvac) — verified against the official MA state registry on 2026-09-13, never self-reported.
Re-check at the official registry: https://occupationallicensingandpermitting.mass.gov/madol/s/license-search-page

## Sources

- [Google](https://www.google.com/maps/search/?api=1&query=Denommee%20Plumbing%2C%20HVAC%20%26%20Electric&query_place_id=ChIJae-0Reef44kRUUQvvjIPiXY): 4.7★ from 149 ratings
- [Local Chambers of Commerce](https://business.burlingtonchamberofcommerce.org/list/member/denommee-plumbing-hvac-electric-2179): Listed on this source
- [Google Reviews](https://www.google.com/maps/search/?api=1&query=Denommee%20Plumbing%2C%20HVAC%20%26%20Electric&query_place_id=ChIJae-0Reef44kRUUQvvjIPiXY): Listed on this source
- [Exa](https://business.burlingtonchamberofcommerce.org/list/member/denommee-plumbing-hvac-electric-2179): 1 web mention across the open web (each linked to its source)
- [Official Website](https://www.denommeeplumbing.com): 25 yrs in business · Self-reported profile and service details

## Mentions

Unverified third-party mentions found on the open web — relay with attribution ("a Reddit commenter said…"), never as Tavlee's own finding.

- “In 1999, third-generation Master Plumber Guy Denommee and his wife Carin launched Denommee Plumbing, HVAC & Electric, growing from a single truck operation into an award-winning team with over 80 empl…” — business.burlingtonchamberofcommerce.org (2022-11-06) — https://business.burlingtonchamberofcommerce.org/list/member/denommee-plumbing-hvac-electric-2179

## Recent reviews

- **5/5 · Google Reviews · Matthew Horka · 2026-08-14**: Phin was great, good quality plumbing work, and transparent quote up front. Also, quick turnaround to get the fixed complete.
- **5/5 · Google Reviews · W G · 2026-06-01**: Giovanni was prompt, professional and very helpful!
- **5/5 · Google Reviews · Bub Minton · 2026-05-28**: Jehovanny is very professional, courteous and knowledgeable. He is exactly the technician you want servicing your HVAC system.
- **5/5 · Google Reviews · Dan Hilbert · 2026-05-27**: All maintenance was done in a timely fashion and Jahovaney did a great job
- **5/5 · Google Reviews · Kathleen Ryan · 2026-05-15**: Geo is very polite and knowledgeable. He was telling me how the system works and what he was doing every step of the way. I would give him more than 5 stars if I could.

Kathleen Ryan
- **5/5 · Google Reviews · P Hudson · 2026-05-11**: Jeo was great! He did a thorough job with our annual AC maintenance and a repair. He was very polite and professional.
- **5/5 · Google Reviews · Maurice Morneau · 2026-04-27**: Change laundry faucets.  Dave Pica is the cleanest plumber I have ever had and he picked up after installing new faucets and left the area cleaner.
- **5/5 · Google Reviews · Cara Soucy · 2026-04-22**: had a great experience with Denominee Plumbing, especially with Nick, the service technician. He was incredibly helpful, knowledgeable, and responsive from start to finish. He took the time to explain the issue clearly, answered all of my questions, and made me feel confident in the work being done.…
- **5/5 · Google Reviews · Elaine Walsh · 2026-04-17**: Amazing, professional service from Denommee! George and Aiden replaced a toilet. Brian reviewed our HVAC system and Alden checked the electrical system. Each one was polite and explained each step of the way. They explained options, reviewed your current functioning and pricing schedules.  Cautious …
- **5/5 · Google Reviews · Rita Williams · 2026-03-11**: Jeo B and Adonis did a wonderful job with my steam heat radiators. Very likeable, professional guys.

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Data freshness: last scanned 2026-09-05T03:48:28.861Z.
Cite as: Denommee Plumbing, HVAC & Electric — Tavlee (https://tavlee.com/contractor/denommee-plumbing-hvac-and-electric-burlington)
Source: https://tavlee.com/contractor/denommee-plumbing-hvac-and-electric-burlington