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."

"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."

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

"Chris Keith and his workforce did a great job of installing my tankless forced hot water heater. The job was completed on time and on budget!"

"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.

"Same day installation. Called at 10am, 20 year old hot water heater replaced by 3:30 pm."

"Outstanding customer service from start to finish. The plumber was knowledgeable, respectful, and left everything clean after the repair."

Backed by more than 40 years experience, Proto Home Service Plumbing & HVAC provides dependable residential and commercial plumbing, heating, and air-conditioning services throughout Greater Boston and the South Shore. Our licensed professionals deliver expert installation, repair, and preventive maintenance for boilers, furnaces, heat pumps, air-conditioning systems, tank and tankless water heaters, and gas piping, ensuring lasting comfort, safety, and reliability for every home and business.\nWe provide 24/7 emergency service when urgent plumbing or HVAC problems. Our goal is to deliver honest recommendations, clear estimates, quality workmanship, and respectful service on every job?large or small. Whether you need a minor repair, routine maintenance, or a complete system replacement, Proto Home Service is ready to help keep your property safe and comfortable year-round.

Live Your Most Comfortable Life with a Company You Trust.\nWe offer Same Day Service and Next Day Installation!\n\nSila has been the center of delighting homeowners since 1989, with our team of engineers, certified technicians, and system designers that are proud to deliver the highest level of expertise in the HVAC industry. Whether it?s a repair, replacement, installation, or service, we have an unwavering commitment to keeping you and your family comfortable and safe ? season after season.\nWe guarantee satisfaction and are proud to have earned over 7,000 ?A? ratings on Angie?s List and its prestigious Super Service Award!