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

Joe Belanger, Plumbing Services
4.5(
130
)
Tankless Water Heater - Repair

Serving East-Derry, 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 Daigle Plumbing Heating and Cooling
Daigle Plumbing Heating and Cooling
4.4(
43
)
Tankless Water Heater - Repair

Serving East-Derry, 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
104 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 East-Derry, 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(
1,337
)
Tankless Water Heater - Repair

Serving East-Derry, 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
351 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for TJ Thistlewood Plumbing & HVAC
TJ Thistlewood Plumbing & HVAC
5.0(
6
)
Tankless Water Heater - Repair

Serving East-Derry, NH and surrounding areas

Emergency services offered

"Tyler was extremely helpful and accommodating and helped me on very short notice with 2 plumbing projects recently, even spending almost an entire Saturday working when a washing machine install ended up being more work than expected. He is professional and extremely reasonably priced. Will definitely recommend and use for all of my plumbing needs."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+1

Recommended by100%of homeowners
Avatar for John Petralito JP SERVICE NH
John Petralito JP SERVICE NH
4.6(
83
)
Tankless Water Heater - Repair

Serving East-Derry, NH and surrounding areas

In business since 2004

Emergency services offered

"John is a very friendly and knowledgeable man. He is helpful and communicates his schedule several times daily. He did an amazing job on our powder room. We are beyond thrilled with the end result and would definitely ask him back to do more repairs as needed."
Multi Family Door Locks Replaced
Multi Family Door Locks Replaced
Additional Photos
Additional Photos
Additional Photos

+7

Recommended by91%of homeowners
Avatar for GMR Mechanical
GMR Mechanical
4.4(
56
)
Tankless Water Heater - Repair

Serving East-Derry, 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
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