Verified record
Alchemic Plumbing & Heating, LLC is a plumbing business whose own website says it is located in Northborough, MA and blends cutting-edge tools, smart technology and streamlined service. It lists free estimates and 24/7 emergency service, and reports 13 years in business. A recent customer says Seamus came to help with a sewer gas smell that turned out to be coming from the toilet flange, and quickly replaced the flange and reset the toilet. Another recent customer says they had a leak in their basement, four other plumbing groups told them they needed a new water heater, and Seamus was the only one to advise it might not be that; it turned out to be a completely different issue. A recent review says Seamus installed a new filtered drinking water faucet and wrote the date on the new filter. Another recent customer says Alchemic installed their new pool heater, and another says Seamus took care of a warranty issue on their heat pump water heater. In a 2025 review, a customer said Seamus worked on their new sump pump install and improved the existing system for routing water from the sump. In another 2025 review, a customer said Seamus extended a natural gas line when they relocated their glass studio and returned to walk through the plumbing inspection with them. A 2025 review said the customer had an entire new heating system installed by Alchemic Plumbing & Heating.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Alchemic Plumbing & Heating, LLC. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$290 – $710
Typical plumbing job around $500
5 stars in every way possible. Communication. Taking time to explain, knowledgeable. For any plumbing service I would not hesitate to to call him.
Prompt, extremely courteous (both in conversation and by doing the little things like putting booties on when in nice areas of the house), knowledgeable, reasonably priced, honest, and they do good work. Cannot recommend Seamus enough. Bottom line, 10/10, would recommend.
Would highly recommend.. Seamus made my system much more efficient and explained every step of the process. He was also friendly and knowledgeable
This was our first service and we're very happy with it. A defect in our drip pan was found, which will need to be replaced to prevent damage to the floor below.
Seamus responded to my inquiry same day and was able to schedule a date of service that worked with my schedule. He arrived on time, was both friendly and professional. He didn’t just fix my issue, but gave me some good-to-know tips. I called him for one service only and planned on asking him to come back for other things at a later date, but he was very accommodating and ended up staying to fix the other issues. He uses a modern scheduling and payment service which made the transactions smooth and simple. Highly recommended. Will definitely use again.
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2 changes recorded — last scanned Sep 26, 2026.
Transparent diagnostics5.0
Quoted price holds5.0
Midnight and weekend help5.0
Broad plumbing and HVAC range5.0
Rapid response5.0
Repeat, years-long customers5.0
One team for the electrical and the plumbing4.5
State-verified plumbing license2.6