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McNiff Plumbing & Heating is James (Jim) McNiff's one-man plumbing business, run out of Stoneham since 1988 and covering Greater Boston's north suburbs — Winchester, Melrose, Medford, Malden, Somerville, Burlington, Cambridge, and more. Jim, a Massachusetts-licensed Master Plumber, answers his own phone, and reviewers describe genuine one-on-one service. Several customers describe using Jim for close to two decades. In a February 2024 review, a longtime client said they'd used his services for close to 20 years and described him promptly installing a new hot water tank the same day they called in a panic over a major leak. In an April 2024 review, a homeowner who bought an 1890s house in 2011 said Jim has handled everything from routine repairs to converting their heating system from oil to gas. In a September 2024 review, another longtime customer credited him with the same kind of oil-to-gas conversion years earlier and said they still depend on him for everything from big jobs to small faucet and valve repairs. Jim's advice comes up often, too. In a November 2024 review, a customer said neighbors recommended McNiff specifically because he'd give solid advice even if they didn't take his quote, after two other companies gave wildly different opinions on a heating-system replacement. In an August 2024 review, a customer said Jim has consistently been the most reasonably priced plumber they've used and offers free advice on smaller fixes. One March 2024 review mentions Jim's son Michael working alongside him on a water heater replacement, though the business describes itself as a one-man operation on its own site. Jim's Massachusetts Master Plumber license is active on the state registry. For a plumbing or heating job in Stoneham or the surrounding north suburbs, especially anything involving an older home or a heating-system upgrade, Jim's decades of specific, repeat-customer reviews make him an easy call — his solo schedule means it's worth calling early for anything that isn't urgent.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from McNiff Plumbing & Heating LLC. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$290 – $710
Typical plumbing job around $500
Sean was the only plumber around worcester to answer on a sunday. He came out very next day to fix my water leak. was very professional! would def reccomend his services.
I had 2 companies come and look at my heating issues and they gave me wildly different opinions. Both gave me quotes on a new boiler and heat pumps. My neighbors encouraged me to contact McNiff. They said he'd at least give me solid advice, even if I didn't accept his quote. I emailed him on Saturday morning at 9 am, he called me at 10, he was at my house by 11 for an evaluation. His quote was 20% lower than the next best quote. He put a new boiler in my house 3 days later. He's reliable, responsive and professional.
Jim has always been our go-to since we made the wise decision for his help converting from oil to gas years ago. From the big jobs, to smaller water heater or boiler issues, to toilet, valve, faucet repair, we can always depend on his service and price.
I've had Jim do a bunch of jobs at my home over the years (new toilet install, 2nd water meter install, sink fix, etc), and he's always done great work. He has consistently been the most reasonable cost compared to other plumbers, and he gives great free advice on how to do minor jobs yourself to help you avoid costs when you want to.
We needed a few things - new disposal, new outdoor faucet and some tub work - and Jim did it promptly, professionally and at a fair price. Highly recommend.
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1 change recorded — last scanned Aug 15, 2026.
Transparent diagnostics5.0
Quoted price holds5.0
Midnight and weekend help5.0
Broad plumbing and HVAC range5.0
Rapid response5.0
Repeat, years-long customers5.0
4.3