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    Johnson Bros. Plumbing & Drain Cleaning
    Quincy boiler repair

    Boiler Repair in Quincy, MA

    Quincy has more cast-iron steam boilers per block than almost anywhere on the South Shore. We've been inside these systems in triple-deckers from Wollaston to North Quincy and know what it takes to keep them running — or when it's time to replace. Licensed MA plumber — we take emergency no-heat calls 24/7.

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    MA Master Plumber Lic. PL #17034-MCorporate License #458124/7 emergency answering4.8 stars from 367 Google reviews

    Why boiler repair matters in Quincy

    Quincy's older neighborhoods — Wollaston, North Quincy, Quincy Center, Merrymount — are full of pre-war and mid-century buildings that were designed around cast-iron steam boilers. Those systems need someone who actually understands them.

    South Shore winters don't give you much room for a failed boiler. A no-heat call in February in a multifamily building with elderly or young residents is genuinely urgent.

    Deferred maintenance is common with older boilers. Pressure relief valves that haven't been tested, corroded sections, and failed steam traps all show up as surprise breakdowns when the heat is needed most.

    Many Quincy homeowners bought into older stock and inherited a boiler that's never been professionally serviced. A proper diagnostic can find issues before they become a cold-night emergency.

    Our boiler repair process

    Boiler diagnostic & repair

    We assess pilot and ignition systems, heat exchangers, pressure settings, zone valves, circulator pumps, and controls to find the real cause of the problem before recommending work.

    Pressure relief & safety check

    The pressure relief valve is the boiler's last line of defense. We test it, check the expansion tank, verify operating pressures, and confirm the system is safe to run.

    Boiler replacement

    When repair isn't the right call, we help you choose an appropriately sized replacement — gas or oil, hot water or steam — and handle the full installation including venting and controls.

    Every boiler call starts with a full diagnostic. Our $99 service fee applies toward the repair when you move forward, so you're not paying just to be told what's wrong.

    No heat in Quincy? We answer 24/7.

    Local boiler service from a Quincy company

    Nate and Nick Johnson were born and raised in Quincy and attended Quincy High School. We dispatch boiler calls from 75 East Elm Ave — so when you're in Merrymount or Houghs Neck at 11pm with no heat, you're calling plumbers who grew up a mile away. We give you a straight scheduling answer and a real price before work starts.

    Ready to schedule boiler service in Quincy?

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    Quincy boiler repair FAQs

    How long do boilers last in Quincy homes?

    A well-maintained cast-iron boiler can last 25–40 years. Many Quincy homes still have boilers installed in the 1970s and 1980s. At some point, parts get hard to source and efficiency drops enough that replacement makes more financial sense than another repair.

    Why is my boiler making banging or gurgling sounds in my Quincy triple-decker?

    Banging in a steam system usually means water is trapped where it shouldn't be — often a sagging return line or a failed steam trap. Gurgling in a hot-water system usually means air in the lines. Both are common in Quincy's older multifamily buildings and fixable.

    When should I repair vs. replace my boiler?

    We look at age, the cost of the repair versus a new unit, and whether parts are still available. A boiler under 15 years old with a single failed component is almost always worth repairing. A boiler over 25 years old with multiple failing parts is usually better replaced.

    What boiler pressure should I see on the gauge?

    A hot-water boiler typically runs at 12–15 PSI cold and up to 20–25 PSI at operating temperature. A steam boiler should run under 2 PSI. If you're seeing higher numbers, the pressure relief valve may be lifting or the system needs attention.

    How fast can you get to a no-heat boiler call in Quincy?

    We dispatch from 75 East Elm Ave, so Quincy calls are fast. Call (617) 479-9911 and we'll give you a real arrival window based on where we are on the board — not a promise we made up.

    What are the warning signs my boiler is about to fail?

    Watch for: frequent pilot outages or ignition lockouts, pressure that keeps climbing or dropping without explanation, banging or kettling sounds during a heating cycle, visible rust or moisture around the boiler body, and heating bills that have jumped without a weather explanation. Any one of these warrants a diagnostic call before you lose heat entirely.

    How long does a boiler repair take?

    Most single-component repairs — circulator pump, expansion tank, pressure relief valve, aquastat — are completed in one visit of 1–3 hours. If we need to order a part, we'll tell you upfront and schedule the return visit. Full boiler replacements typically take a full day.

    Do you warranty your boiler repairs?

    Yes. Labor is warrantied for one year. Parts carry the manufacturer warranty, which varies by component. We stand behind our work — if the same issue comes back within the warranty period, we come back.

    Johnson Bros. Plumbing & Drain Cleaning

    Family-owned South Shore plumbers since 2008.

    Contact

    (617) 479-9911

    Emergency · Scheduling

    MA PL #17034-PL-M
    Corp #4581

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