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Top-Rated Water heater repair or service pros in Pelham - Updated Nov 2026

Avatar for Robert Johnson Plumbing
Robert Johnson Plumbing
5.0(
325
)
Water Heater - Repair or Service

Serving Pelham, NH and surrounding areas

Approved

In business since 2009

Free estimates

Offers commercial services

"Robert was very responsive to my request for a water heater replacement. His pricing was competitive, and his crew was prompt and professional. The work was complete less than 24 hours after first contact. I recommend Robert Johnson Plumbing and plan to be a repeat customer, myself"
2 neighbors recently requested a quote
Recommended by86%of homeowners
Joe Belanger, Plumbing Services
4.5(
130
)
Water Heater - Repair or Service

Serving Pelham, 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 time7 hrs
Recommended by94%of homeowners
Avatar for A Really Good Plumber
A Really Good Plumber
4.5(
46
)
Water Heater - Repair or Service

Serving Pelham, NH and surrounding areas

Approved

In business since 2007

Emergency services offered

Credit card accepted

"He was very knowledgeable and very friendly and his prices are very reasonable compared to other contractors and he did a great job installing wyn well tank I would definitely recommend him for any repairs"
Additional Photos
Additional Photos
3 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Heritage Home Service
Heritage Home Service
4.1(
1,337
)
Water Heater - Repair or Service

Serving Pelham, NH and surrounding areas

Approved (Corporate)

In business since 1988

Free estimates

Emergency services offered

"I asked for a rep to come to give quotes for repair or replacement of my gas boiler. Before he came the old boiler failed, and Heritage was able to quickly install a new one so that we without heat and hot water for only a short time."
Grand opening of new location
Team breakfast
Events
Billy working hard
Golf tournament

+29

Response time5 hrs
332 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Pine Valley Plumbing
Pine Valley Plumbing
5.0(
7
)
Water Heater - Repair or Service

Serving Pelham, NH and surrounding areas

Approved

In business since 2024

Free estimates

Offers commercial services

"I received service from this company for the first time for a toilet that my son plugged up. They were very professional and thought they were fair in price since it was a very big job. I would highly recommend them for any plumbing needs."
On the job
On the job
On the job
On the job
On the job

+2

Recommended by14%of homeowners
Avatar for Water Heater Installation ProfessionalsWHIP
Water Heater Installation ProfessionalsWHIP
4.6(
164
)
Water Heater - Repair or Service

Serving Pelham, NH and surrounding areas

In business since 2007

Free estimates

Emergency services offered

"Jake was responsive and showed up on time. He recommended a solution that would ensure that our A/C condensation pipes do not corrode quickly. He repaired the pipes that had corroded and also repaired the plastic vapor barrier that was cut when the repairs started. He even cleaned up the broken ceiling tiles.  We will use Jake/Peterson Plumbing to repair a few leaky faucets and we highly recommend using Jake at Peterson Plumbing.
"
Navien water heater
Navien Combi Boiler
HTP Firetube
Recommended by95%of homeowners
Avatar for Walley’s Heating & Air Conditioning
Walley’s Heating & Air Conditioning
4.8(
110
)
Water Heater - Repair or Service

Serving Pelham, NH and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"I was referred to Walley's by a friend after experiencing trouble getting someone in to service my burner. When I called, I spoke to several courteous and professional staff members who went the extra mile to help me. I was concerned because the burner was running loud and we had already experienced a "puff back" on our old burner and didn't want to risk that again, and we had just started having a leak from what looked like an overflow pipe. I also mentioned that I had radiant heat in one room and needed an experienced technician that could manage the anti-freeze in the system. When I told Mandy the problem, she checked with Walley Sr. and he scheduled one of his best technicians to handle our job and got him out to us within a few days. Our technician, Alex, was polite, knowlegedable, professional and honest. He told me, as well as showed me everything he was doing, asked me to inspect the burner before putting it back together and did a very comprehensive inspection. Alex found that our leak was coming from a broken pressure valve which he had on his truck and replaced immediately. After 4 hours of Alex working at our home, we recieved a follow-up customer service call to make sure we were happy with the work Alex did and wondering if we had any questions or concerns. Wow! I was impressed! I plan to continue using Walley's and look forward to a long relationship with them."
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 rate100%
Recommended by95%of homeowners
Showing 1-10 of 48
FAQs for water heater repair or service projects in Pelham, 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 Pelham, 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.