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Top-Rated Tankless water heater installers in New-suffolk - Updated Nov 2026

Avatar for Premier HVAC Services
Premier HVAC Services
4.3(
229
)
Tankless Water Heater - Install

Serving New-suffolk, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"I had an issue with my stream boiler last Saturday. Did a google search and called multiple companies except Lighthouse (also part of Premier HVAC) picked up the phone right away and the tech Slava (unsure if I spelled his name correctly) showed up an hour after my call. He was very knowledgeable. He first did a thorough inspection on my streamer boiler (I thought mine was called furnace but he corrected me and luckily Lighthouse also repair stream boiler), then giving options (replace the water feeder and side glass or the whole stream boiler since mine was already past 30years and it may not last long). Due to budget issue, after discussed with my family, we chose for now just changed the parts. Slava has no problem with that and I got lucky that he was about to arrange time to have the work done the same day. Slava is also very patient and professional. As he learned that I am new to streamer boiler, while he was doing his work, at the same time, he was giving “a lecture “ in terms of names, functions of each parts and the concept of how the stream boiler works and how to maintain it properly. I gotta be honest that I don’t recall all the he mentioned but at least now I have a concept. In terms of the price, I can’t say that it’s cheap but you pay for the quality of service that you get. Slava literally taking his time and spent about 4 hours to repair. Highly recommend."
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+38

Response time1 day
Response rate100%
1 neighbors recently requested a quote
Avatar for BERARDI ELECTRICAL CONTRACTING, INC.
BERARDI ELECTRICAL CONTRACTING, INC.
3.7(
72
)
Tankless Water Heater - Install

Serving New-suffolk, NY and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"Since I moved into my apartment around 20 years ago, I've had problems with the bathroom exhaust fan. When I turned it on, often the circuit breaker would be thrown. Finally it got to the point where it just wouldn't work at all - if I tried to use it, the fuse was blown. I posted the project here and Leonel of Berardi contacted me shortly afterwards. After looking at it he determined that the fan was the wrong kind and wasn't even installed properly. He explained it to me, ordered the correct fan, and had someone come over to install it. Now the fan works perfectly, no more blown fuse, and it's less noisy, too. They could have played this differently, slapped on a bandaid on it and had me call again and again for the same problem, but Berardi did the right thing. I'd recommend them to anybody who needs electrical work done."
Lido beach NY
Lido beach NY
Lido beach NY
Response time7 hrs
Response rate100%
4 neighbors recently requested a quote
Avatar for M Adorno, LLC
M Adorno, LLC
4.0(
7
)
Tankless Water Heater - Install

Serving New-suffolk, NY and surrounding areas

Approved

Free estimates

Customers say: True professional

M Adorno, LLC is your go-to partner for all your remodeling and construction needs. With expertise in kitchen and bathroom remodeling, as well as residential and commercial construction, we bring your vision to life. Our team of skilled professionals is committed to delivering exceptional results that exceed your expectations. Contact us today to transform your space into something extraordinary.

Response time2 days
Response rate100%
1 neighbors recently requested a quote
Avatar for South Shore Plumbing and Heating, Inc.
South Shore Plumbing and Heating, Inc.
4.8(
114
)
Tankless Water Heater - Install

Serving New-suffolk, NY and surrounding areas

In business since 2016

Free estimates

Credit card accepted

"From the time I met Dennis for my estimate he was very helpful in answering all my questions regarding a tankless water heater and gave me a written estimate on the spot. I upgraded my original tankless water heater and both Dennis and is office staff kept me informed of the price difference in units. Dennis and his experienced grew of technicians did a wonderful job of removing my old hot water heater and installing my new one and any problems that came up they were able to handle. After job was completed they cleaned and vacuumed the area and demonstrated how my tankless water heater worked. I would recommend South Shore Plumbing & Heating to anyone who wants a excellent company that does the job right the first time."
west hampton alpine
sunrise
Laars Combi
Peerless oil boiler
Peerless oil boiler 2

+7

Response time9 hrs
Recommended by99%of homeowners
Avatar for APV Mechanical Inc
APV Mechanical Inc
4.8(
89
)
Tankless Water Heater - Install

Serving New-suffolk, NY and surrounding areas

In business since 2005

Free estimates

Credit card accepted

"Anthony and his crew did a great job in providing and installing the exact system that I had requested.  
They were thorough, professional and very neat and very easy to work with.  The installation was completed in one day.
The pricing was more than fair.  I couldn't be happier with the new A/C system.  I highly recommend APV to anyone in need of a new central A/C system.
"
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+2

Recommended by91%of homeowners
Avatar for Braido Heating & AC
Braido Heating & AC
5.0(
25
)
Tankless Water Heater - Install

Serving New-suffolk, NY and surrounding areas

In business since 1978

Emergency services offered

Credit card accepted

"Heater was making a knocking sound and of course it was the holiday season. Braido came out right away and found a fan part needed replacement. The parts vendor was closed but they came out the next available day and had everything running smooth."
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Recommended by100%of homeowners
Avatar for MFS PLUMBING AND WATER HEATER CO.
MFS PLUMBING AND WATER HEATER CO.
5.0(
17
)
Tankless Water Heater - Install

Serving New-suffolk, NY and surrounding areas

In business since 1987

Free estimates

Emergency services offered

"Included in the price of the 50 gallon water heater I needed was the plumbers picking up the new water heater, transporting it to my home, navigating the steps down to the basement, and taking away the old water heater. All for the price on the receipt for the new water heater. What Mr. Simpson charges for is the installation of the new water heater and the peace of mind that comes with having a master plumber do a masterful job. Articulate, polite, and efficient, he made me aware of everything he was doing every step of the way. He is obviously a person who takes pride in his work. Mr. Simpson's work comes with a guarantee to amend any problem that arises. A guarantee I have not needed to avail myself of, but appreciate nonetheless. I am thoroughly satisfied with the job he did, and recommend him as an honest tradesman."
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Recommended by100%of homeowners
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