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

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

Serving Oyster Bay, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"I had a great experience with Premier HVAC replacing my old and leaking water heater. I was impressed that they were able to respond quickly and start working on the same day as my call, especially given the severely cold weather and other plumbers being busy replacing freezing pipes. The plumber was able to work with my very tight kitchen space and narrow hallways, and without having to remove the countertop in my kitchen. I am satisfied with the installation and would definitely consider Premier HVAC for future plumbing needs."
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+38

Response time1 day
Response rate100%
1 neighbors recently requested a quote
Avatar for All Weather Heating & Cooling
All Weather Heating & Cooling
4.5(
70
)
Tankless Water Heater - Install

Serving Oyster Bay, NY and surrounding areas

Approved

In business since 1969

Free estimates

Emergency services offered

"Tom was terrific....repaired boiler....cost reasonable.....explained everything so clearly so that even this 88year old understood it....experience with company from start to finish was a pleasure"
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+13

Response time3 days
7 neighbors recently requested a quote
Recommended by94%of homeowners
Bonhomme Plumbing and Home Renovations
4.9(
6
)
Tankless Water Heater - Install

Serving Oyster Bay, NY and surrounding areas

Approved

In business since 2007

Free estimates

Credit card accepted

Bonhomme Plumbing and Home Renovations 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. 25 years of 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.

Response time7 hrs
1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for BERARDI ELECTRICAL CONTRACTING, INC.
BERARDI ELECTRICAL CONTRACTING, INC.
3.7(
72
)
Tankless Water Heater - Install

Serving Oyster Bay, NY and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"Great experience from the first time I made a request on HomeAdvisor. Leo called me within 5 minutes to inquire about my service. He came within 2 hours that same day to give me a free estimate and determine what work including all the permits needed to be done. I picked a relatively short turn around time to complete the work which included upgrading from 100 amps to 200 amps and taking out and installing new box and outside circuitry. Leo gave me a written estimate, itemized and emailed it to me and work was done within a week. When his team arrived they were on time with all of the necessary supplies and started working. One of the most details I saw in his work was that he was there at the work site the entire time making sure his crew was doing everything right and completing the work on time. It was about 7-8 hour job and Leo was there the entire time. I was impressed with what I saw I decided to ask for another task which included another light fixture in front of the garage because I knew he would do a good job. Leo and his workers are good, honest and dependable."
Lido beach NY
Lido beach NY
Lido beach NY
Response time7 hrs
Response rate100%
4 neighbors recently requested a quote
Avatar for 247 Services
247 Services
5.0(
4
)
Tankless Water Heater - Install

Serving Oyster Bay, NY and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"We had John do our plumbing job. He was excellent. We had a hose that was attached to the outside of our house, that would not come off. We had several people try to take it off, no use. He was able to take it off without breaking the pipe. If i need a plumber again would definitely ask for him."
Bathroom
1 neighbors recently requested a quote
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