Get matched with top tankless water heater repair pros in Exeter, NH

"Best price of 6 quotes. But more importantly, did a great job and worked with my 90 year old mom home alone that has hearing and vision difficulty. He sent pics and everything. 6 STARS!"

"No invoice transparency at Sila Heating, Cooling, Plumbing, and Electrical. I had an appointment on February 16, 2026, to troubleshoot a no-heat issue on the second floor of my home. I was told the repair would be $1,500. Although hesitant, I agreed to proceed because I needed heat. The repair was completed, I paid $1,524.90, and the technician left. I later realized I had not been provided with an invoice, so I called the company directly at 781 438 4114. The person who answered the phone emailed me an invoice. The invoice listed an HVAC diagnostic fee of $69.00, followed by ?HYD 170,? with no price or itemized breakdown provided. I understand that professional services and parts can incur significant costs, it is unreasonable that the part alone could account for the entire charge without any supporting documentation. I respectfully requested a detailed breakdown of the invoice through multiple phone calls and emails; however, the responses I received were dismissive and failed "

"Wonderful service from Adam! My water heater was struggling to keep up with my wife?s long showers - which by the way she heats them up hot as hell! ? Besides the point, Adam recommended sizing up the water heater in order to keep up with the demands of some crazy hot water. Incredibly fast installation process and Adam was really friendly. I would definitely recommend him to all my friends who are looking for a plumber. You should certainly give him a call!"

"Initially problem was only partially fixed. Came back and fixed the problem completely at their cost."

"I purchased a heat pump electric water heater to take advantage of a generous rebate from Efficiency Maine. When looking for someone to install it I was referred to Jophil by a real estate company that I know. I called and was given a time that Kyle would arrive to give an estimate and perform the installation (if the estimate was accepted). I did accept the estimate and Kyle got right to work. He did a nice job and made sure that everything was in good working order before he left. I was very pleased with my first experience with this company and would not hesitate to call on them again in the future."

"Work was done promptly and the boiler works great! All issues were addressed and fixed in a timely matter. So appreciative that they came out quickly and got things done."

Climate Design Systems has been around since 1946! We are an HVAC & Plumbing company that is full licensed to serve Massachusetts, New Hampshire, and southern Maine. We pride ourselves on quality workmanship and outstanding customer service. There is no job too big or too small! We offer Residential & Commercial HVAC services such as; -maintenance -repair -replacement/retrofit -new construction We offer Residential & Commercial Plumbing services such as; -water leak repair -drain repair -fixture replacement -boiler repair & installation -water heater repair & installation -water treatment

"Maffei worked out great, they came first to provide a quote, and then returned a few days later once I was ready to complete the work. Both the front office and field technicians were ultra-professional to work with, and I will not hesitate to hire them again in the future."