# Harbor Master Plumbing & Heating, Inc.

**Trade:** Plumbing · **Address:** 56 Bowdoin Rd #5, Mashpee, MA 02649 · **Phone:** (508) 419-1592 · **Website:** http://www.harbormasterplumbing.com/ · **Languages:** English

**Rating: 4.2/5** (medium confidence) — from 16 reviews across 5 sources.
100% of sentiment-scored reviews read net-positive. Last 6 months: 1 reviews, 0 negative.

## The honest read

Harbor Master Plumbing & Heating, Inc. is a plumbing and heating contractor based in Mashpee, MA, with an office in Osterville, serving Cape Cod towns from Plymouth and Bourne down through Falmouth, Barnstable's villages, and along the Mid and Outer Cape to Dennis and Brewster. The company self-reports 34 years in business and handles both trades side by side — water heaters, gas lines, fixture and remodel plumbing on one hand, boilers, furnaces, mini-splits and central heating on the other.

Reviewers across Google and Angi consistently name a plumber, John (Perez), for his professionalism, patience explaining options, and workmanship, in accounts spanning 2020 through 2025. Several customers describe returning to the company over multiple years for a mix of jobs — water heater repairs, gas line and gas dryer installs, sink and shower work — rather than a single one-off call, and more than one reviewer independently describes the pricing as fair or affordable. The company also responds quickly to emergencies: a 2020 review recounts a boiler pilot failure over a July 4th weekend fixed within an hour of the call, and a 2025 review describes a same-day fix for a total loss of water.

The company's own ratings back up that record: Google shows a perfect 5.0 from 11 ratings and Angi shows 5.0 from 13, with no negative reviews found on either platform.

One thing worth asking about directly: how long the company has actually operated. The business's own site claims 34 years, while Angi's directory data separately shows a '7 years of experience' badge and a '20 Years Experience' service tag — the numbers don't reconcile, and it's unclear whether the difference reflects the current ownership's tenure versus a longer trading history.

For a Cape Cod homeowner who needs a plumber who also handles the heating side — water heaters, boilers, gas lines, or a mini-split — with a consistent point of contact and no negative reviews surfacing across platforms, Harbor Master is a reasonable call; just confirm current licensing and how long the team has actually been operating under this name.

**Strengths:**
- Named plumber John Perez — repeatedly praised by name across years
- Fast emergency response — holiday boiler outage and no-water call fixed same day
- Repeat customers — return over years for water heaters, gas lines, sinks
- Fair pricing — several reviewers independently cite affordable quotes
- Perfect multi-platform ratings — 5.0 stars on both Google and Angi

**Concerns:**
- Tenure claims vary — Angi shows 7 or 20 years vs site's 34-year claim

**Where sources disagree:**
- Angi's own directory data shows two different tenure figures (a '7 years of experience' highlight and a separate '20 Years Experience' service tag), both inconsistent with the business's own site's claim of 34 years in business

## Claims & citations

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

- Named plumber John Perez is consistently praised by name for professionalism and expertise in reviews from 2020 to 2025 _(confidence: high)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2tOT1NVNUhUM0ZNVlVGb2JYQkJWRkY2ZG14UlVHYxAB!2m1!1s0x0:0xc5920189eb6839d2!3m1!1s2@1:CAIQACodChtycF9oOkNOSU5HT3FMVUFobXBBVFF6dmxRUGc%7C%7C?hl=en) — “5★ Heater maintenance and A/C repair … John & Del were punctual, professional and did a great job. Great master plumbing service technicians…”
  - [Angi](https://www.angi.com/companylist/us/ma/osterville/harbor-master-plumbing-heating-inc-reviews-2.htm) — “5★ John is extremely professional courteous and knowledgeable when it comes to Plumbing and heating. His workmanship is like a work of art. …”
  - [Angi](https://www.angi.com/companylist/us/ma/osterville/harbor-master-plumbing-heating-inc-reviews-2.htm) — “5★ There was no hot water on July 4th weekend. Boiler pilot wouldn't light up. John was one of the first to respond to the HomeAdvisor reque…”
  - [Angi](https://www.angi.com/companylist/us/ma/osterville/harbor-master-plumbing-heating-inc-reviews-2.htm) — “5★ John Perez loves what he does and values the solutions he brings to folks in need of the basics, heat and hot water! He was generous with…”
- Fast emergency response: a holiday-weekend boiler outage and a total loss of water were both resolved same day _(confidence: high)_
  - [Angi](https://www.angi.com/companylist/us/ma/osterville/harbor-master-plumbing-heating-inc-reviews-2.htm) — “5★ Harbor Master Plumbing did some wonderful outdoor work for us! We then had a "no water" emergency and he came right away and fixed our pr…”
  - [Angi](https://www.angi.com/companylist/us/ma/osterville/harbor-master-plumbing-heating-inc-reviews-2.htm) — “5★ There was no hot water on July 4th weekend. Boiler pilot wouldn't light up. John was one of the first to respond to the HomeAdvisor reque…”
- Repeat customers return over multiple years for water heaters, gas lines, sinks and showers _(confidence: high)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSUNOdWEyM1R3EAE!2m1!1s0x0:0xc5920189eb6839d2!3m1!1s2@1:CIHM0ogKEICAgICNua23Tw%7C%7C?hl=en) — “5★ Great local plumbing service we trust. We’ve called them over the years for big and small issues: water heater system repair, gas line re…”
  - [Angi](https://www.angi.com/companylist/us/ma/osterville/harbor-master-plumbing-heating-inc-reviews-2.htm) — “5★ Great local plumbing service we trust. We've called them over the years for big and small issues: water heater system repair, gas line re…”
- Multiple reviewers independently describe pricing as fair or affordable _(confidence: medium)_
  - [Angi](https://www.angi.com/companylist/us/ma/osterville/harbor-master-plumbing-heating-inc-reviews-2.htm) — “5★ Nice family run plumbing company with fair pricing.”
  - [Angi](https://www.angi.com/companylist/us/ma/osterville/harbor-master-plumbing-heating-inc-reviews-2.htm) — “5★ They installed a new shower valve in my house in Centerville. They did a great job with short notice at a affordable price. 5Star+ for Ha…”
  - [Angi](https://www.angi.com/companylist/us/ma/osterville/harbor-master-plumbing-heating-inc-reviews-2.htm) — “5★ he was every thing you would want in a professional ,reliable,did great work,with fare pricing he will be my plumbing pro from now on”
- Perfect 5-star average corroborated on both Google (11 ratings) and Angi (13 ratings) _(confidence: high)_
  - [Google](https://www.google.com/maps/search/?api=1&query=Harbor%20Master%20Plumbing%20%26%20Heating%20Inc.&query_place_id=ChIJGatu6_sz-4kR0jlo64kBksU) — “Google: 5★ from 11 ratings”
  - [Angi](https://www.angi.com/companylist/us/ma/osterville/harbor-master-plumbing-heating-inc-reviews-2.htm) — “Angi: 5.0★ from 13 ratings”
- Practices both plumbing (water heaters, gas lines, fixtures, remodels) and heating/HVAC (boilers, furnaces, mini-splits, A/C) _(confidence: high)_
  - [Official Website](http://www.harbormasterplumbing.com) — “A plumbing and heating contractor based in Mashpee, MA (with an office in Osterville) offering plumbing repair/installation, boiler and heat…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2tOT1NVNUhUM0ZNVlVGb2JYQkJWRkY2ZG14UlVHYxAB!2m1!1s0x0:0xc5920189eb6839d2!3m1!1s2@1:CAIQACodChtycF9oOkNOSU5HT3FMVUFobXBBVFF6dmxRUGc%7C%7C?hl=en) — “5★ Heater maintenance and A/C repair … John & Del were punctual, professional and did a great job. Great master plumbing service technicians…”
  - [Angi](https://www.angi.com/companylist/us/ma/osterville/harbor-master-plumbing-heating-inc-reviews-2.htm) — “5★ John is extremely professional courteous and knowledgeable when it comes to Plumbing and heating. His workmanship is like a work of art. …”
  - [Angi](https://www.angi.com/companylist/us/ma/osterville/harbor-master-plumbing-heating-inc-reviews-2.htm) — “Services offered (Angi): Plumbing for a Remodel or Addition - Install, Water Heater Installation and Replacement, Gas Piping, HEATING, PLUMB…”
- Self-reports 34 years in business, though Angi's own directory listing shows conflicting tenure figures of 7 and 20 years _(confidence: medium)_
  - [Official Website](http://www.harbormasterplumbing.com) — “Self-reported 34 years in business”
  - [Angi](https://www.angi.com/companylist/us/ma/osterville/harbor-master-plumbing-heating-inc-reviews-2.htm) — “Angi profile for Osterville, MA (address 7 Van Gogh Drive matches the business's own office) shows a perfect 5.0 from 13 reviews, all source…”
- Specializes in Plumbing _(confidence: high)_
  - [Official Website](http://www.harbormasterplumbing.com) — “A plumbing and heating contractor based in Mashpee, MA (with an office in Osterville) offering plumbing repair/installation, boiler and heat…”
  - [Angi](https://www.angi.com/companylist/us/ma/osterville/harbor-master-plumbing-heating-inc-reviews-2.htm) — “5★ Harbor Master Plumbing did some wonderful outdoor work for us! We then had a "no water" emergency and he came right away and fixed our pr…”
  - [Angi](https://www.angi.com/companylist/us/ma/osterville/harbor-master-plumbing-heating-inc-reviews-2.htm) — “5★ Great local plumbing service we trust. We've called them over the years for big and small issues: water heater system repair, gas line re…”
  - [Angi](https://www.angi.com/companylist/us/ma/osterville/harbor-master-plumbing-heating-inc-reviews-2.htm) — “5★ They installed a new shower valve in my house in Centerville. They did a great job with short notice at a affordable price. 5Star+ for Ha…”
  - [Angi](https://www.angi.com/companylist/us/ma/osterville/harbor-master-plumbing-heating-inc-reviews-2.htm) — “Services offered (Angi): Plumbing for a Remodel or Addition - Install, Water Heater Installation and Replacement, Gas Piping, HEATING, PLUMB…”
- Specializes in HVAC / Heating & Cooling _(confidence: high)_
  - [Official Website](http://www.harbormasterplumbing.com) — “A plumbing and heating contractor based in Mashpee, MA (with an office in Osterville) offering plumbing repair/installation, boiler and heat…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2tOT1NVNUhUM0ZNVlVGb2JYQkJWRkY2ZG14UlVHYxAB!2m1!1s0x0:0xc5920189eb6839d2!3m1!1s2@1:CAIQACodChtycF9oOkNOSU5HT3FMVUFobXBBVFF6dmxRUGc%7C%7C?hl=en) — “5★ Heater maintenance and A/C repair … John & Del were punctual, professional and did a great job. Great master plumbing service technicians…”
  - [Angi](https://www.angi.com/companylist/us/ma/osterville/harbor-master-plumbing-heating-inc-reviews-2.htm) — “5★ John is extremely professional courteous and knowledgeable when it comes to Plumbing and heating. His workmanship is like a work of art. …”
  - [Angi](https://www.angi.com/companylist/us/ma/osterville/harbor-master-plumbing-heating-inc-reviews-2.htm) — “5★ There was no hot water on July 4th weekend. Boiler pilot wouldn't light up. John was one of the first to respond to the HomeAdvisor reque…”
  - [Angi](https://www.angi.com/companylist/us/ma/osterville/harbor-master-plumbing-heating-inc-reviews-2.htm) — “5★ John Perez loves what he does and values the solutions he brings to folks in need of the basics, heat and hot water! He was generous with…”
  - [Angi](https://www.angi.com/companylist/us/ma/osterville/harbor-master-plumbing-heating-inc-reviews-2.htm) — “Services offered (Angi): Plumbing for a Remodel or Addition - Install, Water Heater Installation and Replacement, Gas Piping, HEATING, PLUMB…”

## License

Status: **not_found** — verified against the official MA state registry, 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=Harbor%20Master%20Plumbing%20%26%20Heating%2C%20Inc.&query_place_id=ChIJGatu6_sz-4kR0jlo64kBksU): 5.0★ from 11 ratings
- [Google Reviews](https://www.google.com/maps/search/?api=1&query=Harbor%20Master%20Plumbing%20%26%20Heating%2C%20Inc.&query_place_id=ChIJGatu6_sz-4kR0jlo64kBksU): Listed on this source
- [Official Website](http://www.harbormasterplumbing.com): 34 yrs in business · Self-reported profile and service details
- [Angi](https://www.angi.com/companylist/us/ma/osterville/harbor-master-plumbing-heating-inc-reviews-2.htm): 5.0★ from 13 ratings
- [Exa](https://www.harbormasterplumbing.com/): 0 web mentions across the open web (each linked to its source)

## Recent reviews

- **5/5 · Google Reviews · Stéphanie Jenouvrier · 2026-06-11**: Very professional, a pleasure to deal with!
- **5/5 · Google Reviews · Neville Alleyne · 2025-10-17**: Heater maintenance and A/C repair … John & Del were punctual, professional and did a great job. Great master plumbing service technicians with great bedside manner, who answers all your questions and prepares the homeowner with preventative suggestions to mitigate costly future repairs.Will keep the…
- **5/5 · Angi · Michael R. · 2025-06-01**: Nice family run plumbing company with fair pricing.
- **5/5 · Angi · Philia H. · 2025-06-01**: Great local plumbing service we trust. We've called them over the years for big and small issues: water heater system repair, gas line replacement, gas dryer installation, sink installation, and shower repair. They are always responsive, knowledgeable and professional. Highly recommend!
- **5/5 · Angi · Gary P. · 2025-06-01**: Harbor Master Plumbing did some wonderful outdoor work for us! We then had a "no water" emergency and he came right away and fixed our problem so that we had water again! We highly recommend them as honest, attentive and professional!
- **5/5 · Google Reviews · Nancyjane Fox · 2024-04-08**: I have lived in my home for 38 years. I discovered Harbor Master Plumbing and heating in 2019. They are the most accommodating plumbing company I have ever had. Their work is excellent and they have helped me out of many problems. You can not go wrong if you use them. They are also trust worthy.
Sin…
- **5/5 · Angi · Elizabeth S. · 2025-06-01**: Amazing workers. Efficient. Clean. Neat. Professional.
- **5/5 · Google Reviews · Philia Henderson · 2024-01-16**: Great local plumbing service we trust. We’ve called them over the years for big and small issues: water heater system repair, gas line replacement, gas dryer installation, sink installation, and shower repair. They are always responsive, knowledgeable and professional. Highly recommend!
- **5/5 · Angi · Carl F. · 2022-07-01**: They installed a new shower valve in my house in Centerville. They did a great job with short notice at a affordable price. 5Star+ for Harbor Masters Plumbing
- **5/5 · Angi · F. G. · 2020-10-01**: John is extremely professional courteous and knowledgeable when it comes to Plumbing and heating. His workmanship is like a work of art. He is prompt and a pleasure to work with I highly recommend him!

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Data freshness: last scanned 2026-08-23T19:56:54.070Z.
Cite as: Harbor Master Plumbing & Heating, Inc. — Tavlee (https://tavlee.com/contractor/harbor-master-plumbing-and-heating-inc-mashpee)
Source: https://tavlee.com/contractor/harbor-master-plumbing-and-heating-inc-mashpee