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Top-Rated Tankless water heater repair pros in Chester - Updated Nov 2026

Avatar for Daigle Plumbing Heating and Cooling
Daigle Plumbing Heating and Cooling
4.4(
43
)
Tankless Water Heater - Repair

Serving Chester, 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
110 neighbors recently requested a quote
Recommended by63%of homeowners
Avatar for Skovron Mechanical Services
Skovron Mechanical Services
4.1(
85
)
Tankless Water Heater - Repair

Serving Chester, 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
Response rate100%
Recommended by84%of homeowners
Avatar for Heritage Home Service
Heritage Home Service
4.1(
1,336
)
Tankless Water Heater - Repair

Serving Chester, NH and surrounding areas

Approved (Corporate)

In business since 1988

Free estimates

Emergency services offered

"Everyone I dealt with was very professional. I found this company to be very expensive. I had them complete a smaller job and hired someone else to install a hot water heater due to their cost."
Grand opening of new location
Team breakfast
Events
Billy working hard
Golf tournament

+29

Response time5 hrs
357 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Coy Plumbing & Heating
Coy Plumbing & Heating
5.0(
8
)
Tankless Water Heater - Repair

Serving Chester, 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."
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+4

Response time2 days
Response rate100%
Recommended by87%of homeowners
Avatar for A Really Good Plumber
A Really Good Plumber
4.6(
34
)
Tankless Water Heater - Repair

Serving Chester, NH and surrounding areas

In business since 2006

Free estimates

Emergency services offered

Einstein Plumbing and Heating is there for you when you have plumbing and heating issues. We are on time, friendly and have high expectations for prompt and courteous service. Calls returned promptly.

Response time2 days
Recommended by95%of homeowners
Avatar for TJ Thistlewood Plumbing & HVAC
TJ Thistlewood Plumbing & HVAC
5.0(
6
)
Tankless Water Heater - Repair

Serving Chester, 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
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+1

Recommended by100%of homeowners
Avatar for GMR Mechanical
GMR Mechanical
4.4(
56
)
Tankless Water Heater - Repair

Serving Chester, NH and surrounding areas

In business since 2008

Free estimates

Emergency services offered

"The tech who did the work was awesome!!!!!
He was careful with my refrigerator, which I greatly appreciate.
He searched for the least expensive replacement parts and will bring them later today

I couldn't be happier with the entire service call from start to finish!!!

Highly recommend Gill's Appliance Service!!!
"
Recommended by83%of homeowners
Showing 1-10 of 34