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Top-Rated Tankless water heater installers in Alton Bay - Updated Nov 2026

Wanda's Water Heaters
4.9(
12
)
Tankless Water Heater - Install

Serving Alton Bay, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Credit card accepted

"Wanda?s is awesome! My old electric hot water heater tank finally retired to the recycling bin. I called on Tuesday evening and spoke to a knowledgeable technician named Chad. I told him what my old unit was doing and he said it definitely needs a replacement after 17 years. He then asked how the home is heated. And then gave me the 2 options for my home. He patiently explained the differences between the hybrid heat pump unit vs the electric one that was presently on its way out. He answered all my newbie questions. He explained the pricing between the two units. I told him I have to discuss everything with the cfo and I would call back Wednesday morning. He also told me they would get me on the schedule for tomorrow or the next day. That was amazing. I called the next day and spoke with Amanda to schedule me in the following day. Chad showed up the following morning and did an awesome job. He was very polite and knew his job well. I am very satisfied so far with Wanda?s."
Installation of boiler
Response time1 day
2 neighbors recently requested a quote
Recommended by8%of homeowners
Avatar for Bourne Family Plumbing, LLC
Bourne Family Plumbing, LLC
4.8(
13
)
Tankless Water Heater - Install

Serving Alton Bay, NH and surrounding areas

Approved

Free estimates

Credit card accepted

"Colin Bourne is a pleasant person who we asked for a quote for replacing the water heater expansion tank. We accepted and he arrived on time and had the job done in les than an hour. We're very pleased and plan on using him again for our next plumbing problem."
project photos
project photos
project photos
project photos
project photos

+14

3 neighbors recently requested a quote
Avatar for Barrington Solutions Plumbing & Heating LLC
Barrington Solutions Plumbing & Heating LLC
4.9(
17
)
Tankless Water Heater - Install

Serving Alton Bay, NH and surrounding areas

Approved

In business since 2024

Free estimates

Small jobs welcome

"I finally got to build my dream garage to store all my tools and have a cool hangout on Friday nights with the boys n a couple coors. Chris came and did everything from the bathroom and the heating system. I will definitely be calling him back to add a mini split in the future. He was professional, punctual and clean. Very knowledgeable you can tell he cares about his clients."
Granite Ridge
Brook hill development
Sanborton
Derry
2.5 bathroom modular

+39

41 neighbors recently requested a quote
Avatar for Heritage Home Service
Heritage Home Service
4.5(
464
)
Tankless Water Heater - Install

Serving Alton Bay, NH and surrounding areas

Approved (Corporate)

In business since 1988

Free estimates

Emergency services offered

"Ended up just replacing my gas hot water heater. Proactive Comfort had the best price so I chose them. They explained all the options and we felt best going with them for the value."
Generator Installation
Light Fixture Service
Oultet services
Indoor Outlet Service
HVAC Outdoor Unit

+16

Response time1 day
349 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for A.R. Borges Mechanical LLC
A.R. Borges Mechanical LLC
5.0(
15
)
Tankless Water Heater - Install

Serving Alton Bay, NH and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"Very professional work, he walked me through every step of the way. I would hire him in a New York minute for my plumbing and heating needs, he also installed my mini split system and his guys did a phenomenal job. To find a mechanical contractor in the area was a breath of fresh air."
My jobs
My jobs
My jobs
My jobs
My jobs

+25

11 neighbors recently requested a quote
Avatar for Coy Plumbing & Heating
Coy Plumbing & Heating
5.0(
8
)
Tankless Water Heater - Install

Serving Alton Bay, 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
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Additional Photos

+4

Response time2 days
Response rate100%
Recommended by87%of homeowners
Showing 1-10 of 28

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