Mass Flow Plumbing and Heating is a Lakeville, Massachusetts plumbing and heating company, offering plumbing, water heater, boiler, hydronic heating, gas piping, drain cleaning, and new-construction plumbing work. Founded in March 2022, it's owner-operated by Devin Meagher, who self-reports the company also serves greater Boston.
The company holds an active Massachusetts plumbing license (#4633-PL-C), confirmed with the state licensing registry. Its website separately lists a second, self-reported Master Plumber license number (#17132) under Devin Meagher's name, distinct from the state-registry number above.
Google reviews are overwhelmingly positive, with a 5-star average from 76 ratings. Reviewers consistently describe Devin and staff including Alex, Chris, and Jake as fast to respond, often the same day or after hours — one reviewer said Devin still walked them through options by phone shortly after having a newborn, and another said he arrived at 6 a.m. on a last-minute evening call. Specific praised jobs include water heater replacements, a heat-exchanger swap on a tankless water heater, an oil-to-gas conversion covering a new toilet, water heater, and gas piping, removing and capping old radiator pipes while checking the rest of the system, and fixing a main sewer line leak alongside a new boiler and water heater install. One reviewer described the team diagnosing water damage running top to bottom through a three-family house, and another said Devin worked through an unusually combined hot-water-and-forced-air system, calling multiple manufacturers to get the repair right. A third described a boiler repair that grew into a full system replacement, with the crew staying until 2 a.m. on a cold December night to restore heat and hot water while still honoring the original quote.
It's worth asking which license number applies to your job, since the company's own website lists a second Master Plumber number that differs from its state-registry license, and the business itself is relatively young, with a self-reported founding in 2022. Otherwise, this is a consistently well-reviewed, responsive choice for plumbing and heating work in the Lakeville and greater Boston area — especially water heater, boiler, and gas piping jobs, and particularly for emergency or same-day needs.
