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Find Water heater repair or service pros in Portsmouth

Avatar for Robert Johnson Plumbing
Robert Johnson Plumbing
4.9(
311
)

Serving Portsmouth, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2009

Free estimates

Customers say: True professional

"Robert gave such amazing service and installed our water heater the same day I contacted him. !He was very reasonable with his pricing with no hidden costs and the water heater looks and runs great. Thankyou Robert!"
Response time2 hrs
Response rate94%
18 neighbors recently requested a quote
Wanda's Water Heaters
4.9(
11
)

Serving Portsmouth, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Credit card accepted

"Called with an issue with my furnace, they were the only company to actually answer the phone. Professional customer service and prompt scheduling. Gave me an honest estimate and proceeded with the job that day. Would recommend to anyone needing service or a new system installed! 10/10!"
Installation of boiler
Response time1 day
2 neighbors recently requested a quote
Recommended by9%of homeowners
Avatar for Skovron Mechanical Services
Skovron Mechanical Services
4.1(
85
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"Excellent communication from Keith; outstanding service from Roger. Professional, timely, and reasonably priced. They came in under estimate on my boiler repair and advised that a second bit of work that had previously been discussed was not going to be necessary. I will definitely use them again and highly recommend them!"
Commercial Cooling
Before Oil Boiler
Old
Oil Boiler
HVAC Roof Top Unit

+19

Response time9 hrs
2 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for Maffei Plumbing and HVAC, LLC
Maffei Plumbing and HVAC, LLC
3.7(
11
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

At Maffei Plumbing and HVAC, LLC, we are committed to your comfort. With an experienced and qualified staff to provide quick service for any service needed. We can solve any problem with a friendly face. Give us a call for a free estimate.

Air Conditioning Installation
Rinnai Tankless
Water Filtration
Heating Systems
Heating Systems

+6

Response time1 day
68 neighbors recently requested a quote
Recommended by14%of homeowners
Avatar for Bourne Family Plumbing, LLC
Bourne Family Plumbing, LLC
4.6(
8
)

Serving Portsmouth, NH and surrounding areas

Approved

Free estimates

Credit card accepted

"I had a great experience with this plumber! He arrived right on time and was very professional and friendly from the start. I had a leak in the plumbing in the wall between the bathroom and the bedroom and he took the time to explain exactly was going on. He even went under the house (in the cold and dark) to inspect the issue further and took pictures so I could clearly see the problem myself. He explained the repair in a way that was easy to understand and fixed the leak quickly ad professionally. I really appreciated his honestly, communication and the quality of his work. Everything is working perfectly now! I definitely would recommend him and would happily call and refer him if I ever need a plumber's help!!"
project photos
project photos
project photos
project photos
project photos

+14

20 neighbors recently requested a quote
Avatar for Coy Plumbing & Heating
Coy Plumbing & Heating
5.0(
8
)

Serving Portsmouth, NH and surrounding areas

In business since 2024

Free estimates

Emergency services offered

"We were very pleased with the communication and the outcome of our project. We have an old home with some older piping. Finding someone that works on steam boilers is tough. When they looked at the install, they explained what needed to happen clearly deand unrstandable."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+4

Response time2 days
Response rate100%
Recommended by87%of homeowners
Avatar for Heritage Home Service
Heritage Home Service
4.0(
465
)

Serving Portsmouth, NH and surrounding areas

In business since 1986

Free estimates

Emergency services offered

"Paul, our service technician, was timely, knowledgeable, and efficient. I can highly recommend Heritage Home service on this account. However I am extremely unhappy with the company's new service plan offered. I will explore other providers for this reason, and may not use Heritage Home Service in the future."
Oil tank installation
Water filtration
Celing fan installed.
Outdoor condenser unit.
Garbage disposal installed under kitchen sink.

+14

Response time9 hrs
Recommended by75%of homeowners
Avatar for TJ Thistlewood Plumbing & HVAC
TJ Thistlewood Plumbing & HVAC
5.0(
6
)

Serving Portsmouth, NH and surrounding areas

Emergency services offered

"Tyler & his team were very professional and thorough with repairing my tankless water heater. Tyler was quick to respond to my call for a repair service call and took the care to be as neat as possible during the repair and cleaned up nicely when the service was completed. TOP NOTCH !!!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+1

Recommended by100%of homeowners
Avatar for Danerik Mechanical LLC
Danerik Mechanical LLC
5.0(
13
)

Serving Portsmouth, NH and surrounding areas

In business since 2022

Free estimates

Emergency services offered

"I was so pleased with the exceptional service Danerik Mechanincal has provided! They were great at communicating and explaining the work that will be done and the timeframe it will be completed. They were working in my house for 3 days and they were very respectful of my house, they had a very clear plan on what will be done each day and communicated that with me daily. They installed a mini-split system, a/c and water heater. They left the area so clean and I was very impressed by them for going above and beyond to deliver excellent service. I would gladly recommend them to anyone. They will not disappoint. They also helped me with the rebate on the mini-split and took me through the entire process. I am one happy customer - Bianca Baker"
Baker install
Baker install
Billy & Bianca Baker
Billy & Bianca Baker
Billy & Bianca Baker

+11

Response time10 hrs
Recommended by91%of homeowners
Showing 1-10 of 25
FAQs for water heater repair or service projects in Portsmouth, 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 Portsmouth, 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.