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McMahon Plumbing & Heating

HVAC Company in Boston, Massachusetts and surrounding areas.

4.6on Google · 538 reviews74 years in business
  • TenBestFind Reviewed
  • Top 10 Winner
  • iWhat do these badges mean?
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    Verified Business
    Key business information or ownership has been verified against a primary source.
    Top 10 Winner
    The company currently appears in at least one active TenBestFind Top 10 ranking.
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    A paid commercial relationship with TenBestFind. It never earns or influences a ranking position. This company holds no such relationship.

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Quick Overview

iHow this is made

This summary is generated from the verified data on this profile: services, service area, credentials, warranty terms and the company's Google review record. It is reviewed by an editor before publishing and refreshed whenever the underlying data changes. Nothing here is asserted that is not stated elsewhere on this page.

Editorial Standards →

McMahon Plumbing & Heating has worked out of Hyde Park since 1952, and heat pump work has become a core part of the business: the company is a Mass Save participating heat pump installer and a Fujitsu Elite Plus contractor, alongside authorized dealer status with Mitsubishi, Daikin, American Standard, Kohler, Rheem and more than ten other brands. Services span boiler and furnace installation and service, air source heat pumps, ductless mini splits, oil to gas conversions, steam and radiant heating, plus central air and drainage work. The company holds Master Plumbers License 16840, offers 24/7 emergency service and a free heat pump estimate. At 4.6 stars from 538 Google reviews, it has the highest review volume among the specialty heating and cooling contractors on this list.

  • Best for heat pump conversions and fujitsu elite plus installations
  • Mass Save participating installer and Fujitsu Elite Plus contractor
  • No published warranty or financing terms

Company Facts

McMahon Plumbing & Heating at a Glance

By the numbers

Google rating
4.6out of 5
Customer reviews
538on Google
In business
74years

Rating and review count pulled from Google on September 20, 2026. Years counted from 1952.

The work

Best for
Heat pump conversions and Fujitsu Elite Plus installations
Primary service
HVAC

Where

Headquarters
Boston, MA
Service area
Boston
Emergency service
Yes, 24/7

Money and guarantees

Free estimates
Yes
Financing
Not advertised

Editorial Review

Our Take on McMahon Plumbing & Heating

Seventy years in Hyde Park and authorized dealer status with more than a dozen equipment brands make McMahon a genuine heat pump specialist rather than a generalist that added the service. The absence of published warranty and financing terms is worth resolving with a direct question before a major install.

Best for: Heat pump conversions and Fujitsu Elite Plus installations

What We Like

  • Mass Save participating installer and Fujitsu Elite Plus contractor
  • Authorized dealer for over a dozen equipment brands
  • Master Plumbers License 16840 published
  • 24/7 emergency service and a free heat pump estimate
  • 4.6 stars from 538 Google reviews, the highest volume on this list

Things to Consider

  • No published warranty or financing terms
  • One review described a scheduling and call center mix-up
  • No email address published

Google Reviews for McMahon Plumbing & Heating

Customer ratings shown here come from Google. They are separate from our editorial review above.

Google rating

4.6

Based on 538 Google reviews

Review data updated September 20, 2026

View on Google Maps →

Rating Distribution

  • 5 stars86%
  • 4 stars5%
  • 3 stars1%
  • 2 stars1%
  • 1 star7%
iAbout this distribution

The distribution reflects the 538 Google reviews available when this profile's review data was last refreshed on September 20, 2026. Ratings and counts change continuously on Google, so figures here may lag the live profile slightly. We publish only the values returned by the source, never estimates for missing bands.

Editorial Standards →

Recent Google Reviews

  • Mark Murphy5.0Service on our Central AC unit was quick, easy and reasonable. Our technician Patrick was professional, knowledgeable, and friendly. We are repeat customers and ALWAYS have a great experience... HIGHLY RECOMMENDED ! Mark M. Canton, MAAugust 2026Google
  • James Fleming5.0We had an issue with our HVAC system, not getting good heating or cooling out of it. McMahon were able to figure it out, it turned out to be several things all limiting the HVAC - a dirty coil, a filter we didn’t know existed, a part installed that shouldn’t have been there - until it got fixed. Their people are nice and able to explain what happened for us normal folks. Highly recommend.June 2026Google
  • Yorghos Tripodis1.0The organization of their telephone center leaves a lot to be desired. I had an appointment two weeks in advance. They called the day before to confirm and I missed it. I called back the day of the appointment and they said that the technician is coming but never did. When I called back they claimed that they called me ( they didn’t) and they canceled the appointment. They could rebook me the day after or three days after that. Then the called me back the next day to tell me that their next appointment is two weeks later and have no record of my previous calls. They only have records of the imaginary calls the made but none when I actually talked twice with their representative. And they blamed me for not remembering who I spoke to . So one start for the bad customer serviceJune 2026Google
  • Jose Lagos5.0Ledi was great working around my house. He and his crew would come early and do their job efficiently and in a very outstanding manner. I’m happy to have had Ledi servicing my house. 100%June 2026Google
  • Rodney Raftery5.0We recently had mini splits installed in our big-ass Victorian by McMahon. Our house was always freezing in the winter and boiling in the summer. And because of the layout of our place (lots of rooms/no real open areas) we had to have so many window units that it never really cooled anything down. But that's not the case anymore. And we couldn't be happier. From the start, everyone at McMahon was just awesome to work with. Our first contact was Steven, who explained everything to us and helped us problem solve for what would be the best solution. After we decided that, Ledi did most of the installation (always with a helper). Ledi does more work in a day than I do in 3 months. He was just great (even our pets loved him). The electricians were awesome. Everyone involved was stellar. McMahon even helped us with the MassSave info we wanted to fill out for an interest-free loan that was available. I can not say enough about them. If you are looking to get any heating or cooling units installed, use them. You will not be disappointed.June 2026Google
  • lambie5.0Our air conditioning unit broke down during a very hot stretch of weather …Patrick the technician from McMahon Plumbing came to the rescue and was extremely knowledgeable and professional….the problem was immediately diagnosed and fixed within a timely manner…Patrick explained every step of the process leaving us with a better understanding of the issue….thank you McMahon for having such a knowledgeable professional on your team ….June 2026Google

View more Google reviews →

Ranked#7of 9 hvac companies in Boston, MAre-checked September 2026

Editorial Ranking

Why McMahon Plumbing & Heating Made Our Top 9

It holds position 7 in 10 Best HVAC Companies in Boston, MA (2026).

See the Full Boston RankingPositions cannot be bought

Areas Served

Based in Boston, MA.

iAbout service coverage

Coverage is as the business describes it, cross-checked against where its recent documented work is. A company will often travel beyond the areas listed here for a large job and decline a small one at the same distance, so confirm your address before scheduling.

Editorial Standards →

About McMahon Plumbing & Heating

McMahon Plumbing & Heating has served Hyde Park and the surrounding Boston neighborhoods since 1952, and over more than seventy years the company has built one of the deepest heat pump specialties in the city. It holds Mass Save participating installer status and is a Fujitsu Elite Plus contractor, and carries authorized dealer relationships with Mitsubishi, Daikin, American Standard, Kohler, Rheem and more than ten other equipment brands, a roster that lets the company match a system to a specific house rather than pushing one brand.

A recent five star review describes a ductless mini split install in what the homeowner called a large Victorian that had always run cold in winter and hot in summer, work the company completed despite the layout challenges of an older multi-room house. Another reviewer, James Fleming, credited McMahon with correctly diagnosing a combination of a dirty coil and a clogged filter that had been limiting an existing HVAC system's performance, rather than recommending a premature replacement.

Beyond heat pumps and ductless systems, McMahon covers boiler and furnace installation and service, oil to gas conversions, steam and radiant heating, central air conditioning, and drainage work including trenchless repairs and camera inspections. The company holds Master Plumbers License 16840 and describes itself as fully licensed and insured, and it offers 24/7 emergency service along with a free heat pump estimate.

At 4.6 stars from 538 Google reviews, read September 20, 2026, McMahon has the highest review volume of any specialty heating contractor reviewed for this list, a scale that suggests real capacity to handle Hyde Park's steady demand. The company does not publish specific warranty terms or financing details on its site, so those are worth asking about directly, particularly on a full heat pump conversion that represents a significant investment.

This company is a strong fit for Boston homeowners specifically comparing heat pump brands and installers, given its multi-brand authorized dealer status. It is a less natural fit for someone who wants published financing terms or a warranty schedule before calling. Confirm the warranty length, ask about financing options, and get the free estimate in writing before signing a contract for a full system replacement.

iWhere this information comes from

Company history, ownership and capability details on this page are provided by the business and reviewed by our editors for plausibility and consistency. They are not the same as the credentials block, where each item carries its own verification status and source.

Editorial Standards →

Credentials

  • Master Plumbers LicenseMassachusetts · 16840Reported
  • Mass Save Heat Pump InstallerMass SaveReported
  • Fujitsu Elite Plus ContractorFujitsuReported
iWhat verified means here

Verified means we checked the credential against the authority that issues it and recorded the date. Reported means the business told us and we could not independently confirm it. We publish both, labelled, rather than dropping what we could not check.

Editorial Standards →

Reputation by Source

We show each source separately rather than blending them into a single score, because they measure different things.

  • Google

    4.6/ 5

    538 customer reviews

  • TenBestFind

    Editorially reviewed

    Ranked #7 in Boston hvac, September 2026

Company Pricing & Estimates

What this company publishes about its own pricing.

Free estimates
Yes
Emergency callout
Available 24/7

Local Market Pricing

What Boston homeowners generally pay, independent of this company.

AC replacement, existing ductwork
$5,500–$9,500
Heat pump replacement
$7,500–$13,800
Furnace replacement
$3,500–$7,500
Repair call
$150–$600

How much does HVAC replacement cost? →

Project Photos

Business-submitted, reviewed by our editors

  • McMahon Plumbing & HeatingMcMahon Plumbing & Heating
  • McMahon Plumbing & HeatingMcMahon Plumbing & Heating
  • McMahon Plumbing & HeatingMcMahon Plumbing & Heating
  • McMahon Plumbing & HeatingMcMahon Plumbing & Heating

Similar HVAC companies in Boston

McMahon Plumbing & Heating FAQs

  • Is McMahon Plumbing & Heating licensed?

    Yes. The company holds Master Plumbers License 16840 and describes itself as fully licensed and insured, alongside Mass Save participating installer status and Fujitsu Elite Plus contractor recognition.

  • Does McMahon offer emergency HVAC service?

    Yes, the company advertises 24/7 emergency service, along with a free heat pump estimate for anyone considering a conversion.

  • Which heat pump brands does McMahon install?

    McMahon is an authorized dealer for Mitsubishi, Daikin, American Standard, Kohler, Rheem and more than ten other equipment brands, letting the company match a system to a specific house rather than pushing one manufacturer.

  • Is McMahon Plumbing & Heating licensed and insured?

    We checked 0 of 3 credentials against the issuing authority. Verified items carry the date we checked; reported items are what the business told us and we could not independently confirm.

  • What areas does McMahon Plumbing & Heating serve?

    Boston. Coverage is as the business describes it, cross-checked against where its recent documented work is. Confirm your address before scheduling, particularly at the edge of a service area.

  • Does McMahon Plumbing & Heating offer emergency service?

    Yes, the company lists emergency availability. Response time depends on demand, and after a storm every company in the market is stretched.

  • What warranty do they offer?

    Warranty terms are not on file. Ask for them in writing before work starts.

  • How was this profile built?

    Credentials come from issuing authorities, ratings from the company's Google Business Profile with the date we read them, and the editorial take from our own review of estimates, warranty documents and public feedback. Anything the business told us is labelled as reported.

  • Can a business pay to improve its profile?

    A business can subscribe to manage its own listing details, and it can buy a labelled sponsored placement. Neither changes a ranking position or the editorial assessment on this page.

Is Something Incorrect?

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About This Business Profile

Last reviewed
September 2026
Profile last updated
September 20, 2026
Google review data updated
September 20, 2026
Sources checked
Issuing authorities, Google Business Profile, Company website
Sponsorship status
No commercial relationship