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Top-Rated Tankless water heater installers in Nashua - Updated Nov 2026

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

Serving Nashua, NH and surrounding areas

Approved

In business since 2003

Free estimates

Customers say: Quality work

"Our water heater burst over the weekend. We were desperate to get it replaced first thing Monday. Joe returned our call immediately, gave us a more than reasonable quote, was here close to noon, installed new equipment..voila HOT WATER again! Really efficient, nice guy, great job!! I highly recommend him!"
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 Ferris Plumbing, Heating & Air
Ferris Plumbing, Heating & Air
4.9(
58
)
Tankless Water Heater - Install

Serving Nashua, NH and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"We can’t say enough about Matt. He was very responsive to our need. He was out the very next day and was at our home at the time he said he would be there. (That is unheard of these days). Matt was very professional and thorough. There was no surprises with job. Matt and Chris were very efficient with the installation of the hot water tank. We would readily use Ferris Plumbing and heating for any future needs."
Various Remodel Jobs
Various Remodel Jobs
Various Remodel Jobs
Various Remodel Jobs
Various Remodel Jobs

+24

37 neighbors recently requested a quote
Recommended by78%of homeowners
Avatar for Daigle Plumbing Heating and Cooling
Daigle Plumbing Heating and Cooling
4.4(
43
)
Tankless Water Heater - Install

Serving Nashua, NH and surrounding areas

Approved

In business since 1981

Free estimates

Credit card accepted

"Daigle were quick to reach out to quote me for the work we needed - replace a water heater and arrived early! Very personable, professional. However, pricing was an issue. They were way outside of what other plumbers charge for this service and way outside of what Angi's has listed as average project costs. They did have an opening for next day installation which would have been fantastic but I couldn't justify the additional $2400."
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
108 neighbors recently requested a quote
Recommended by63%of homeowners
Avatar for Expedition Plumbing
Expedition Plumbing
5.0(
22
)
Tankless Water Heater - Install

Serving Nashua, NH and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"?I couldn't be happier with my new water heater installation. The team was professional, punctual, and incredibly efficient. They took the time to explain the new unit's features and ensured the workspace was spotless before leaving. ?It?s a relief to have hot water back with zero stress. If you need a reliable install, I highly recommend Expedition!"
64 neighbors recently requested a quote
Avatar for A Really Good Plumber
A Really Good Plumber
4.5(
46
)
Tankless Water Heater - Install

Serving Nashua, NH and surrounding areas

Approved

In business since 2007

Emergency services offered

Credit card accepted

"He was very knowledgeable and very friendly and his prices are very reasonable compared to other contractors and he did a great job installing wyn well tank I would definitely recommend him for any repairs"
Additional Photos
Additional Photos
3 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Pine Valley Plumbing
Pine Valley Plumbing
5.0(
6
)
Tankless Water Heater - Install

Serving Nashua, NH and surrounding areas

Approved

In business since 2024

Free estimates

Offers commercial services

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction! \n \n

On the job
On the job
On the job
On the job
On the job

+2

Recommended by16%of homeowners
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