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

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

Serving Mont Vernon, NH and surrounding areas

Approved

In business since 2009

Free estimates

Offers commercial services

"Was able to get in contact with them early in the morning around 6am. They were able to move a few things around to install the new hot water heater the same day. The owner was extremely professional and the two men that came to do the job were on time and very pleasant. Would not hesitate to call them again ."
2 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Grand Voyage Plumbing and Heating
Grand Voyage Plumbing and Heating
5.0(
61
)
Tankless Water Heater - Repair

Serving Mont Vernon, 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
Gas Furnace
GE Air Conditioner

+1

7 neighbors recently requested a quote
Recommended by84%of homeowners
Joe Belanger, Plumbing Services
4.5(
130
)
Tankless Water Heater - Repair

Serving Mont Vernon, 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 Skovron Mechanical Services
Skovron Mechanical Services
4.1(
85
)
Tankless Water Heater - Repair

Serving Mont Vernon, NH and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"Both Josh and Keith were very professional and demonstrated their skills in finding and fixing the issue in a timely and cost effective manner. I plan on using them for all my HVAC needs in the future and have already recommended them to my neighbors and friends,"
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 Mont Vernon, 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
330 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Water Heater Installation ProfessionalsWHIP
Water Heater Installation ProfessionalsWHIP
4.6(
164
)
Tankless Water Heater - Repair

Serving Mont Vernon, NH and surrounding areas

In business since 2007

Free estimates

Emergency services offered

"This is my 3rd service call completed by Peterson Plumbing.  The bearings on my disposer were going, making a nasty noise.

I bought a replacement unit and had Paterson replace it.  the job was done properly and promptly and for a price that makes doing it yourself a thing of the past.  He cleaned up and left the place the way he found it.

Thus another job by Peterson was completed."
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
)
Tankless Water Heater - Repair

Serving Mont Vernon, NH and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"Christian was very knowledgeable about our water heater and explained everything as he went along testing different issues that might be causing the problem. He was professional and gave me several helpful tips on upkeep of my Rinnai that 2 other companies that had serviced the unit over the years had not bothered to mention. i absolutely would recommend Walley to anyone needing HVAC 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 rate100%
Recommended by95%of homeowners
Showing 1-10 of 31