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Find Water heater repair or service pros in Nashua

Avatar for Maffei Plumbing and HVAC, LLC
Maffei Plumbing and HVAC, LLC
4.0(
2
)

Angi Approved

In business since 2010

Free estimates

Emergency services offered

"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."
40 neighbors recently requested a quote
Recommended by50%of homeowners
Avatar for Sila Heating, Cooling, Plumbing and Electrical
Sila Heating, Cooling, Plumbing and Electrical
4.7(
4,795
)

Angi Approved

In business since 1989

Free estimates

Emergency services offered

"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 "
75 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Petro Home Services
Petro Home Services
4.1(
146
)

In business since 1903

Emergency services offered

"Our heater stopped functioning on Nov 27, 2023 and we called Petro who had done the maintenance on it before and replaced a motor two years ago. They were responsive and a technician came two days later. He worked for 3 hours without explaining what the problem was. Then said he needed to replace the motor. He fixed the problem and left without much explanation. Two days later a bill of $2500 came via email. No explanation, no break-down. I called 4 times over the last 20 days, spoke to 4 different reps and was promised that a supervisor will contact me with the bill details. Nothing happened. Irresponsible customer service and unprofessional behavior. They show all the symptoms of big, bureaucratic, and indifferent service company. I would not recommend Petro if you have options of more personalized services."
Recommended by80%of homeowners
Carroll Flooring & Remodeling
New to Angi

In business since 1998

Free estimates

Warranties offered

At Carroll Floorong we can handle any job, big or small. Commercial or residential. We offer customize tile design, and pattern that will make your project unique. We guarantee our craftsmanship for 5 years no questions asked.

Avatar for Hallmark Home Improvement
Hallmark Home Improvement
New to Angi

In business since 1998

Free estimates

Owner David Tomolillo personally oversees all remodeling projects performed by his company. A native to the North Boston area, David brings his passion for quality, strong work ethic and twenty plus years of experience to Hallmark Homes Remodeling. His in-depth product knowledge, craftsmanship and practical approach ensure that his customers are delivered quality, cost effective solutions for their home improvement needs. We have hundreds of satisfied customers to prove it.

Paul Davis Emergencey Services Of Newton MA
5.0(
2
)

In business since 2011

Emergency services offered

Paul Davis Emergency Services Of Newton MA is water/fire damge company. We are a national franchise with over 500 location. PDES Of Newton is also a perfered vendor for all the major insurance conmpanies around. Every employee is IICRC certified.

Recommended by100%of homeowners
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FAQs for water heater repair or service projects in Nashua, NH

Warning signs include fluctuating water temperatures, a pilot light that repeatedly goes out, unusual noises from the tank, or complete heating failure. You might also detect a rotten egg smell, indicating a potential gas leak, or notice water that never reaches the proper temperature. If your water heater is over eight years old and displaying these symptoms, the gas valve is a likely culprit. Professional inspection is recommended, especially if gas odors are present.

Water heater gas valves are not universally interchangeable. Each valve must match your specific water heater's make, model, and specifications. Important compatibility factors include gas type (natural gas vs. propane), BTU rating, connection types, and physical dimensions. Using an incorrect valve can result in poor performance, premature failure, or dangerous gas leaks. Always consult your water heater's documentation or a professional plumber to identify the appropriate replacement valve for your unit.

The Nashua, NH homeowners’ guide to water heater repair or services

From average costs to expert advice, get all the answers you need to get your job done.