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

Avatar for All Weather Heating & Cooling
All Weather Heating & Cooling
4.5(
70
)
Tankless Water Heater - Install

Serving Brookhaven, NY and surrounding areas

Approved

In business since 1969

Free estimates

Emergency services offered

"Kevin was great! The rest of the company not so much. Kevin diagnosed the problem immediately as the thermostat, had a replacement in the truck, and completed the installation of the new unit quickly. He showed me how to program the updated version, and everything seemed to be fine - until the next morning. Turned out the replacement was defective. When I called, I was told that they might not be able to get back to me that day, but Kevin interrupted his schedule to come back and put in a new (and working) unit at no charge."
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+13

Response time3 days
7 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for BERARDI ELECTRICAL CONTRACTING, INC.
BERARDI ELECTRICAL CONTRACTING, INC.
3.7(
72
)
Tankless Water Heater - Install

Serving Brookhaven, NY and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"Amazing service received by Berardi. Contacted them in the evening and they responded in a few minutes and came over same evening to look at my broken gas heating system. Very knowledgeable and was quick in getting the parts needed and unit up and running again. Very impressed with them coming out evening and the following Sunday where many companies are closed. Highly recommend this company that goes above and beyond."
Lido beach NY
Lido beach NY
Lido beach NY
Response time7 hrs
Response rate100%
4 neighbors recently requested a quote
Avatar for Benitez Remodeling
Benitez Remodeling
4.7(
13
)
Tankless Water Heater - Install

Serving Brookhaven, NY and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"Our experience with this company was very good. Their team of workers are professional and courteous. We had a tree deck installed. It came out beautiful and we are very happy with the outcome."
Project
Response time3 days
8 neighbors recently requested a quote
Recommended by75%of homeowners
Avatar for Energywise, Inc.
Energywise, Inc.
1.0(
1
)
Tankless Water Heater - Install

Serving Brookhaven, NY and surrounding areas

Approved

In business since 1985

Emergency services offered

Warranties offered

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Response time2 hrs
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