Get matched with top tankless water heater repair pros in Hanover, MA

"He called us early morning and by early afternoon we had a new hot water heater. Very professional. I would recommend to all."

For emergency services, please call 781-933-6387.\n\nN.E.T.R., Inc. is here to help homeowners install the best heating and cooling systems that fits their needs. Since 1989, we’ve installed heating and cooling systems in Boston and its surrounding areas, tackling tough problems that our clients face.\n\n Our goal is to ensure our clients have energy efficient, quiet, reliable systems so they can live their lives to the fullest both at home and at work.\n\nOur dedication to our customers’ needs is what drives us each and every day. Our approach to temperature control and comfort has helped us become one of the most respected names in heating, cooling, and refrigeration in New England

"Guy did a great job of diagnosing and repairing our State Hybrid Electric water heater. I would definitely recommend his work."

"This was a relatively small water heater repair, and Ryan did an outstanding job. He responded immediately to my request, provided a reasonable quote, was polite, professional, knowledgable, and friendly to deal with. Will definitely hire again if needed."

"Showed up at promised time with all they needed to replace the water heater and completed the work in under an hour. Not my usual experience with plumbers. Price was the lowest of three I contacted."

"Yes, one day install conversion from tank electric to tankless gas with water softener"

Welcome!\n\nAt JN Service HVAC & Plumbing, we’re proud to deliver licensed, insured, and trusted HVAC and plumbing solutions to homes and businesses across Massachusetts.\n\nWith a solid reputation built on Excellence, Commitment, and Responsibility, we help you prepare your home or commercial space for the season ahead — before winter problems strike.\nOur priority is your comfort at home.\n\nWhy Choose Us?\n- 5-star Rated Company: We are a 5-star rated company with more than 1200 satisfied clients.\n- Customer Success: We focus on long-term relationships.\n- Specialist: Expert knowledge and proven skills.\n- Licensed and Insured: Our services are fully insured, providing you with peace of mind.\n- Quality in Everything we do: Best service with the best products.\n- Double-year warranty on labor.\n- Emergency Service: We're ON 24/7 to ensure your well-being.

"They came to my home showed me what needed to be done and they went and got the water heater. When they came back a short time later they had the tank and installed it in an hour with new pipes and a new shout off that I can do."

"In April 2026, our broken cast iron pipe needed to be replaced, but we didn’t know how extensive the repair would be. From Angi's referrals, we called Full Swing Plumbing who arranged for Nick, one of their plumbers, to come to our house that same afternoon. Full Swing waived the dispatch fee. Nick used his endoscope camera to see the extent of the problem. (They had a coupon on their site which offered this one-time, free service.) After a couple hours, they were able to identify the problem, present a few solutions, as well as a final estimate before they left that day. We agreed on the approach and set a date for the following week. Nick and his co-worker were friendly, deeply knowledgeable, and hard-working. They communicated well, taking photos for us throughout the process. They cleaned up everywhere, completed the job in one day, and they kept to their price. Everything worked well from the single visit."

With over 75 years of experience, GEM provides trusted plumbing services for homeowners in the Plymouth, MA area, as well as across Cape Cod. Our licensed plumbers handle everything from leak repairs and drain cleaning to water heaters, fixture installations, and emergency plumbing service.\n\nWhether you're dealing with a clogged drain or a sudden leak, we deliver fast, reliable solutions to keep your home running smoothly.