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Find Water heater repair or service pros in Merrimack

Joe Belanger, Plumbing Services
4.5(
130
)

Serving Merrimack, NH and surrounding areas

Approved

In business since 2003

Free estimates

Customers say: Quality work

"Joe is an excetant professional contractor, he provided a very competitive quote for the replacement of a propane hot water heater. He was able to do the work the same day as he provided the quote. Work is clean neat and very professional looking. Would not hesitate to contact Joe again on any future heating and plumbing needs."
Buderus oil fired forced hot water heating system
Oil fired buderus
Navien 150 high efficiency wall mounted boiler
Water heater
Powervented water heater

+1

Response time1 day
1 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Grand Voyage Plumbing and Heating
Grand Voyage Plumbing and Heating
5.0(
60
)

Serving Merrimack, NH and surrounding areas

Approved

In business since 2017

Emergency services offered

Warranties offered

Grand Voyage Plumbing and Heating is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. We have accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Water Heater
Water Heater
4th of July Savings
6 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Sila Heating, Cooling, Plumbing and Electrical
Sila Heating, Cooling, Plumbing and Electrical
4.5(
5,397
)

Serving Merrimack, NH and surrounding areas

Approved (Corporate)

In business since 1989

Free estimates

Emergency services offered

"Sila saved me!! Of course right when fall is rolling around my heater broke! The job was quick and affordable! Their amazing customer service is also a huge factor why I will be using Sila again, especially Amy R. In management!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+6

Response time2 days
64 neighbors recently requested a quote
Recommended by89%of homeowners
Gotme Under Pressure ?, LLC
4.3(
645
)

Serving Merrimack, NH and surrounding areas

Approved

In business since 1987

Free estimates

Emergency services offered

Gotme under pressure? LLC IS A Plumbing, Heating & Gasfitting, Drain Cleaning professional in your area. We will meet all of your plumbing needs. We take the pressure off all your plumbing issues. As our company is built off of honesty, integrity and leadership, this is what you can expect.

1 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Daigle Plumbing Heating and Cooling
Daigle Plumbing Heating and Cooling
4.3(
39
)

Serving Merrimack, NH and surrounding areas

Approved

In business since 1981

Free estimates

Credit card accepted

"Justin was professional and knew exactly what I needed to fix my existing water heater without trying to upsell me on a much more expensive tankless water heater. He had the relief valve and expansion tank in his truck and was able to install everything without issue. I would recommend hiring them for your plumbing needs!"
9 ZONE On Boiler
3 Zone Boiler
4 Zone Boiler with storage Tank!!!
Oil Tank
6 Zone Boiler W/Storage Tank

+12

Response time1 day
107 neighbors recently requested a quote
Recommended by68%of homeowners
Avatar for Expedition Plumbing
Expedition Plumbing
5.0(
9
)

Serving Merrimack, NH and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"?I couldn't be happier with my new water heater installation. The team was professional, punctual, and incredibly efficient. They took the time to explain the new unit's features and ensured the workspace was spotless before leaving. ?It?s a relief to have hot water back with zero stress. If you need a reliable install, I highly recommend Expedition!"
44 neighbors recently requested a quote
Avatar for Walley’s Heating & Air Conditioning
Walley’s Heating & Air Conditioning
4.8(
110
)

Serving Merrimack, NH and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"Walley's called me back within an hour of placing the request for a quote. It turned out they had someone finishing a job in my neighborhood and was willing to come by and take a look at the situation. Bryan, the technician, was very professional, courteous, and friendly. It was late afternoon when he came by, and he gave the office the information for a quote, and agreed to stay that evening until the job was done. He arranged for another technician to bring a replacement water heater over so he could continue the prep work while waiting for the new heater. There was no wasted time on the job - Bryan stayed at it until about 9:00 pm when he finished explaining to me how to adjust the water temperature after it heated up. He did beautiful work and cleaned up afterward even though I told him I would take care of it. I would absolutely hire Walley's again for plumbing, heating or air conditioning work!"
Three-Zone Viessmann® Boiler.
Daikin® White Emura Indoor Unit
Viessmann® Wall Hung Boilers Fit in Tight Spaces.
Daikin® Silver Emura Indoor Unit
Viessmann®. A Perfect Fit.

+56

Response time12 hrs
Response rate93%
Recommended by95%of homeowners
Showing 1-10 of 48
FAQs for water heater repair or service projects in Merrimack, 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 Merrimack, 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.