Verified record
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Z Plumberz. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$290 – $710
Typical plumbing job around $500
Z Plumberz is a franchised plumbing, drain, and sewer company — part of the BELFOR Franchise Group, with this Carver location independently owned and operated — that says the brand has served customers nationwide since 2007. The Better Business Bureau gives it an A- grade, and on Google it holds a 4.9-star average from 392 ratings, backed by an unusually large written record: 319 reviews from 2021 through this year. The volume of specific, positive accounts is real. One customer describes an emergency weekend call when a drain pipe leak was actively damaging the unit below their condo — the technician, Tony Serino, responded within minutes and stopped the damage from spreading. Another describes a plumber who kept working through a difficult troubleshooting process on a dead boiler rather than giving up partway through. A rental-property owner describes using the company repeatedly over several years for consistently thorough, professional work, and other reviewers praise specific installs — a Navien tankless water heater repair, a whole-home water filtration system, a Toto washlet — each with named technicians (Zach, Justin Bruno, Jonathan D., Giovanni, Phillip among them) walking customers through what was done. At the same time, a real cluster of reviews describes two recurring problems worth taking seriously. The first is scheduling and communication: a January 2026 review describes a plumber arriving an hour late to a 9am appointment with no proactive call, and a December 2025 review describes dispatch repeatedly promising an imminent arrival that never came, calling the call-center staff dishonest. The second is pricing. An October 2025 review describes an $800 charge for what looked like about 10 minutes of work capping a gas line and a water line. An October 2024 review describes a roughly $395 flat minimum charge regardless of the actual work involved, plus a fee just to get a quote. A July 2024 review says the price for the identical job more than doubled, from $175 to $375, within two years. And an April 2024 review describes the company installing the wrong radiator and not correcting the mistake, after an earlier, pricier-but-satisfactory kitchen renovation job. Both patterns are real and appear across multiple years and multiple reviewers, not just one bad day. Given the size of the company's footprint (319 reviews and counting) and how consistently positive the majority of that record is, most jobs here appear to go well and go well specifically because of skilled, communicative individual technicians — but get a firm, written price before work starts, and confirm the appointment window directly given the scheduling complaints on file.
I made an apointment for 9am for a plumber to come out. At 930 am I called to see where the guy was. They said he should be there and they would call him to have him touch base with me. He showed up at 10am. If you can't show up on a time that is scheduled and I have to call to see where your guy is then id rather not do business with you if you cant show up on time for the first time.
Update: 12/17/2025 was finally able to get them back to finish the install. Apparently there were a couple of internal issues that prevented them from finishing in a timely manner and never communicated this to any of their customers. I'll give them some leeway, but the communication needs improved. 5* plumbers with 0* customer service. I schedule a water heater and water filter install 2 weeks ago. After the water heater install, we had issues with no hot water -- all of the calls for 2 days were picked up by their "national call center" (ie., glorified answering machine). Eventually, I had to email their billing person to get the plumber to eventually call back. Luckily I'm handy enough that we were able to troubleshoot over the phone, otherwise we'd likely would have had to wait days to get it fixed. I'm still waiting on the water filter install; again, 0 communication from ZPLUMPERZ. I've had it "scheduled in their books" now twice (once after the in-person install and once after the troubleshooting call), and both times no one has shown or even bothered to call. Hopefully this review will get someone in the Boston office to take notice and actually respond.
Great experience 👍
I called November 28th 2025 at 9am. They said a plumber would be there between 11:00 and 11:30am. I am still waiting for a plumber to arrive. There call center staff are dishonest. I called multiple times and they kept saying a plumber would be there soon. Do not trust this company. Keep searching until you find a plumber who answers their own calls. The call centers just want to harvest data and resale it.
I couldn’t be more grateful for the incredible job Zack Michelle with ZPlumberz did fixing my Navien on-demand hot water system! From start to finish, Zack was not only professional, but also genuinely enthusiastic and passionate about his craft. The repair went exactly as he predicted — he identified and replaced the faulty part right in front of me, and like magic, I had hot water again! What stood out most was Zack’s willingness to explain everything in detail. He walked me through how the system works and even offered insightful tips about filtering water going into the unit and helping maintain cleaner tap water. He patiently answered all of my (many!) technical questions with knowledge and kindness. Zack is truly a rare find — a curious, considerate, and deeply knowledgeable heating and plumbing expert who takes real pride in his work. I would not hesitate to call on him again in the future and highly recommend him to anyone needing top-tier plumbing support. He’s a total pro and a joy to work with!
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1 change recorded — last scanned Jul 2, 2026.
Persistent problem-solving5.0
Field volumeNot yet rated
Water filtration install3.0