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JMS Plumbing and Heating LLC is a plumbing and heating company at 11 Jakes Lane in Merrimack, NH. Its site describes it as family-owned, offers free estimates, lists residential and commercial plumbing, heating, gas-line and bathroom services in Merrimack, Amherst, Nashua, Derry and Manchester, and currently displays a banner reading 'We are temporarily closed due to medical reasons.' JMS Plumbing and Heating, LLC holds New Hampshire plumber license MBE2401680, which the state registry shows as active. Google shows 5 stars from 229 ratings, and Angi and HomeAdvisor each show 4.7 from 28 ratings. Reviewers name Jay as the plumber. A January 2026 review describes a leaking, rusted disposal: Jay asked for pictures so he could pick up a replacement on his way, cut the old unit out and was done in 90 minutes. A February 2026 review says Jay came out the same day a hot water system failed and returned the following day to replace the whole system. A July 2026 review says he gave options and discussed every detail before working on a water heater, and an April 2026 review says he tried multiple less expensive solutions before determining a water heater needed to be replaced. Other reviews describe an outdoor spigot fixed with parts from his vehicle, a leaking pipe connection at the water main repaired with added supports and shutoffs, a new upflush system, and an October 2024 Angi review of an entire bathroom remodel. Two older Angi reviews raise problems. A June 2022 review says Jay overcharged by $2,250.00, charging $3,250.00 for work the writer later found estimated at under $1,000. A September 2021 review says communication about what he would be doing was unclear and complains about time he spent talking on a phone while there.
Jay was professional and courteous. Did a great job working on our water heater. Left a clean work are at the end of the job. Gave me options and discussed every detail before moving forward. Appreciate his service very much.
Excellent experience! Jay was professional, cordial, thorough. This was my first experience and will definitely have him return for additional jobs. Highly recommend!
Knowledgeable and helpful. Very happy with the results. Plan to use again!
The Spigot in the front of my house was leaking water. Jay came over at his first availability, which was very quick. He efficiently knew right away what the problem was, he had the pieces needed in his vehicle and was able to fix it quickly and thoroughly. I would definitely recommend him for a plumbing job you may have.
Was knowledgeable and efficient
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2 changes recorded — last scanned Sep 14, 2026.
Typical New Hampshire range for this kind of work, from regional averages — not a quote from JMS Plumbing and Heating LLC. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$240 – $580
Typical plumbing job around $410
Certified attributes are verified against the public registry. Others are the business's own statement.
Certified attributes are verified against the public registry. Others are the business's own statement.
Next-day or same-day visits4.2
Mini-split installation4.2
