Denis Plumbing & Heating

Denis Plumbing & Heating is a small North Shore plumbing and heating outfit that customers write about by several names — Deni, Denis, Dennis, and "Deni's Plumbing & Heating" — usually alongside a second tradesman they call Roni or Ronnie. What people hire them for is urgent, unglamorous work, and the accounts are specific. A January 2026 customer wrote that on the coldest day of the year, on a weekend before 8am, their furnace died and they had heat two hours later. Another that month described water coming out of a ceiling light fixture: the crew arrived within an hour, identified and replaced the part, tested the repair, and cleaned up so thoroughly "you would never even know they were in my house". Water heaters recur — a November 2025 reviewer had one replaced within an hour of calling, another the same day, with the work described as spotless. Boilers, furnaces and full heating systems come up repeatedly, as do smaller jobs: a faucet swap, a toilet, an unclogged sink. The work is not only residential. A November 2025 reviewer described the crew hooking up a new oven at their bakery and checking it was gas-safe; another had a toilet replaced and a sink unclogged at their gym; a third mentioned plumbing and heating fixes across their building. Pricing is the other recurring theme, and it runs consistently in their favor: reviewers in October and November 2025 describe a boiler quote well below anyone else's, prices called fair on jobs they were happy with, and a heating-system replacement where the reviewer put the word in capitals. The main thing to weigh is how young and how tightly bunched the written record is. Every one of the nineteen reviews on file falls between October 2025 and February 2026 — a strong but short and concentrated run, with a 5-star Google average across 20 ratings and nothing older to check it against. They look like a sensible call for a North Shore homeowner facing a dead boiler, a burst pipe or a failed water heater who needs somebody there fast. Before booking, ask for the plumbing licence number and verify it with the Massachusetts Board of State Examiners of Plumbers and Gas Fitters, and get the scope and price in writing.