True Blue Plumbing and Heating is a family-owned plumbing, heating, and air conditioning company based in Hanover that says it covers the South Shore — Weymouth, Braintree, Hingham, Quincy, Scituate, Marshfield, Plymouth, and a dozen other nearby towns. Its Massachusetts master plumber license is active, and on Google it holds a 4.9-star average from 33 ratings.
The written record here runs unusually deep and unusually clean: 25 reviews spanning 2015 through this year, across six platforms, without a single negative one on file. What comes up again and again is speed paired with real technical competence. In a review posted this July, a longtime building owner described finding a corroded pipe leaking through a closet ceiling — their plumbing company of 13 years was downsizing, so they called True Blue instead and got a quick, accurate diagnosis. Two weeks earlier, a technician named Emily arrived 20 minutes ahead of schedule, fixed one heating zone in about 15 minutes, and explained that a second zone was short on refrigerant.
The bulk of the work spans both trades in the company's name. Reviewers describe a central air system replacement in 2025 where the crew came back quickly, more than once, to sort out post-install issues; a full gas furnace and central AC installation the same winter, praised end to end from the office to the technicians; and, in December 2024, an emergency call when a furnace started producing carbon monoxide instead of heat — True Blue stopped the leak and had a new furnace in within two days. A 2024 review describes a steam gas heating system with radiant heat installed after an emergency burner failure. Older Houzz reviews dating back to 2015 and 2016 describe converting a home from oil to gas heat, replacing a water heater in the middle of the night, and clearing a sewer line problem caused by a city utility error — that's history, not current practice, but it points the same direction as everything more recent.
A Nextdoor poster in Whitman, in a January 2026 post, said simply that they'd used True Blue and gotten a great job done. Houzz also credits the company with two badges, three awards, and its own QIV (Quality Installation Verification) certification, alongside a 5.0-star average from seven reviews on that platform.
There's genuinely little to flag here — old accounts and new ones alike describe prompt, competent, well-communicated work across both plumbing and HVAC calls, without a documented complaint. For a South Shore homeowner weighing who to call for anything from a leaking pipe to a dead furnace, this is a well-documented option to consider.
