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About US: McMahon Plumbing & Heating

plumber boston maBoston Plumbers & Heating Contractors

Harold McMahon was introduced to the Plumbing Trade by his Father-in-law, John Rooney in the late 1930’s. After serving in World War 2 Harold returned to Boston, and again to work in the plumbing trade with John. A decade later, with considerably more experience and competence, Harold struck out on his own and founded McMahon Plumbing & Heating in 1952.

At the time, Harold’s business centered around the new construction taking place in and around Hyde Park as Builders were providing housing for returning veterans from the War. Since the beginning Harold instilled a pride of craftsmanship and prioritized personal integrity in all his interactions. He demanded the same of all his employees including his son Michael whom entered the business in 1966.

Harold moved the business to its current location in 1964. We have remained in the same location since. Although the focus of the company has changed to Residential Plumbing Service work, the firm remains a family endeavor, under the leadership of Michael F. McMahon. Seven decades later, the 4th Generation of McMahon’s, with Julie McMahon and Michael McMahon Jr.’s involvement, are still serving discerning home owners in the Greater Boston Area. Our company has continued to enjoy sustained growth and success, in large part, thanks to referrals, our outstanding technicians, and the pride and integrity that we take in our work and every interaction.

Today, McMahon Plumbing & Heating is an undisputed leader in the Residential Service fields of plumbing, heating, drain cleaning, and customer service.

Our Team

boston plumberOur team of customer service representatives, dispatchers, training specialists, are fully trained, and they back our expert staff of experienced Boston plumbing technicians. Our radio-dispatched trucks are stocked with a wide inventory of repair items, tools, and emergency equipment, so we're always ready and able to tackle any job that you need performed.

We can provide service to you when you need it, 24 hours a day and seven days a week, and we stand behind the work of all of our technicians. All of our work comes with a satisfaction guarantee, and all of our work and the products we use come with a warranty.

Our Mission

Our goal as a company is to continue to grow and excel by providing each of our clients with the highest quality workmanship possible at every job that we perform. Our strong reputation is built on customer satisfaction, one customer at a time. We constantly strive to provide our clients with high quality repairs, maintenance services, and installations while treating our customers with the highest degree of professionalism and personal integrity possible.

In the spirit of our founder Harold McMahon, as he implored us many years ago and as our advertising slogan instructs us today: "Your home and your time are our first priority!!"


Latest Articles


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  • 5 Reasons To Hire A Licensed Plumber

    When you have a plumbing crisis in your home, whether that’s a clogged pipe or a major leak, it’s crucial to hire a licensed plumber to handle the repairs. You might be tempted to hire a handyman or ask for help from a family member or friend, and while they may be willing to help, we’re talking about a major component of your home, and the wrong equipment or lack of experience could end up making the issue worse and costing you more money. McMahon Plumbing & Heating has been helping our community since 1952, with a family history in the trades dating back to the 1930s. While the times may have changed, our dedication to top-notch customer service paired with our superior plumbing expertise make us the best choice for you and your plumbing needs. When it comes to plumbing repairs for your Boston home, it’s always best to go with a licensed plumber, and in this article, our team of skilled plumbers here at McMahon Plumbing will show you why. Training & Expertise A plumber has to work as an apprentice, complete a course, and pass an examination to obtain a license. They receive extensive training and study different types of plumbing systems. A licensed plumber knows local building codes and complies with them. They are equipped with […]

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  • When Should You Replace Your Water Heater?

    Having a plumber that you can trust is important for when your Boston home’s plumbing system experiences complications, such as a malfunctioning water heater. Water heaters are long-lasting appliances if they’re maintained well, but even the most pampered water heater won’t last forever. If you notice the signs of a worn-out water heater, reach out to an experienced plumber from McMahon Plumbing and Heating as soon as possible. 4 Reasons to Schedule a New Water Heater Installation Numerous Costly Repairs – You may need to hire a plumber to repair a water heater component occasionally, but if it seems like you’re scheduling repairs multiple times a year, then a new water heater is a good investment. Although a new water heater has a higher up-front cost, frequent repairs add up over time, and they’ll likely continue until you replace the water heater. High Energy Bills – Rising energy costs may indicate that you have an inefficient plumbing system. If your usage hasn’t changed, but your energy bills continue to increase, have your plumber determine if your water heater is the source of the problem. If a water heater repair is too costly to justify, purchase a new water heater instead, and your energy bills will return to a reasonable cost. Inadequate Heating – If your water heater isn’t heating the […]

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If you're looking for a heating contractor or plumber in Boston, call McMahon Plumbing & Heating at 1-800-431-5660 or complete our online request form.