Jeffrey P. Griffin

J. Griffin Heating & Plumbing is a family heating and plumbing business in North Reading, MA, run by Jeffrey (Jeff) Griffin with his sons Joshua and Jeremy working alongside him as apprentice plumbers and Sandy handling the office. The company says it has been in the family since 1981 and specializes in natural gas heating and water heating; it lists a Navien Service Specialist certification, and Angi carries a self-reported trade license, 4342-PL-C, expiring in 2028, while BuildZoom lists Jeff's journeyman plumber license 20724 as active and 31 permitted projects, mostly residential boilers, Navien combi units and gas conversions. Oil-to-gas conversions and high-efficiency boiler replacements are the work customers describe most, and the reviews are unusually specific. In 2021 and 2022, homeowners described Jeff handling the gas meter setup, permits, inspections, boiler and water heater installation and rebate paperwork, with old oil tanks removed and one installation finished in a day and a half. Several said he designed the system around the family's needs rather than the most expensive option, and one 2021 reviewer who called several companies said he was the only one who asked about their heating plans. Diagnostic skill comes up too: a 2019 customer with a Navien combi that other plumbers could not fix said he solved it in minutes, and a 2021 reviewer with a complicated boiler system got a same-day evening visit. Crews are described as polite, hardworking and leaving the house cleaner than they found it, with itemized job values in the reviews running from about $850 to $16,000. The single 1-star review, from September 2021, accused him of leaving a radiator job unfinished; the owner replied at length that the radiator was installed and working and that the customer's email had gone unseen. The most recent written reviews are shorter: a 4-star water heater installation in April 2025 done within two hours with some hiccups, and a May 2025 five-star. Across Angi and HomeAdvisor, which mirror the same 245 ratings, the average is 4.9 with 97 percent five-star. He is the right call for a homeowner converting from oil to gas, replacing an aging boiler or water heater, or troubleshooting a Navien system. Confirm the license number with the state board and get the rebate and permit responsibilities in the written proposal.