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Top-Rated Tankless water heater repair pros in Bay Shore - Updated Nov 2026

Avatar for Champion Plumbing & Heating
Champion Plumbing & Heating
4.8(
45
)
Tankless Water Heater - Repair

Serving Bay Shore, NY and surrounding areas

Approved

In business since 2000

Emergency services offered

Small jobs welcome

"On New Year’s Day about 8 years I walked down into my basement and it was covered in a pool of water. To be more specific, waste water. I called Steve and he arrived to our home 15 minutes later! Turns out the leak was coming from the original main drainage pipe installed when our home was built back in 1956. The main cast iron drainage had a crack in it. Steve diagnosed the problem within a few minutes. He proceeded to tear down the wall and fix the problem. He set up the mitigation company for us too. Steve provides superior service at a fair price. I and other members of my family have used Champion Plumbing and Heating for other jobs too. The fact he came over on New Year’s Day within 15 minutes of the phone call speaks volumes within itself. Just my own opinion."
15 neighbors recently requested a quote
Recommended by71%of homeowners
Avatar for Surefire Mechanical Corporation
Surefire Mechanical Corporation
4.5(
157
)
Tankless Water Heater - Repair

Serving Bay Shore, NY and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"I sent a message to the company in the late evening regarding my broken central AC and Jason was here Tuesday morning to look at it. He tried to repair it but was not able to due to the age of the unit and the damage. We needed a new unit and he was here to put it in first thing Wednesday morning. Took him two hours and our AC was working. He was nice and professional. We felt the price was reasonable. Would use him again and recommend his business."
4 Zone Navien Boiler
1st Floor AC System
Hi Efficient Heat and Hot Water
Snow melt sensor
Manifold

+14

Response time10 mins
Recommended by97%of homeowners
Avatar for All Weather Heating & Cooling
All Weather Heating & Cooling
4.5(
70
)
Tankless Water Heater - Repair

Serving Bay Shore, NY and surrounding areas

Approved

In business since 1969

Free estimates

Emergency services offered

"After contracting the installation, the company performed 2 walkthroughs to determine the BEST way to complete the installation. They determine the installation would take two days. The installation crew arrived early on both days. The installers and their work were neat and clean. They cleaned up after the installation, including vacuuming in the house. Dave, the chief installer, treated our house as if it was his. The equipment works as advertised. We could not be more satisfied with the work. From the first meeting to the last equipment check, VERY professional. The pictures show the compressor installed on the roof attached to the chimney, and the main inside unit installed between two windows."
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+13

Response time3 days
7 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Benitez Remodeling
Benitez Remodeling
4.7(
13
)
Tankless Water Heater - Repair

Serving Bay Shore, NY and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

With over 20 years of experience in the construction industry, Benitez Remodeling proudly provides professional plumbing, home remodeling, restoration, and property recovery services for residential and commercial properties. From kitchen and bathroom renovations to plumbing repairs, interior and exterior improvements, and property restoration, we have the experience and expertise to get the job done right. We take pride in quality craftsmanship, dependable service, and treating every property as if it were our own. Contact Benitez Remodeling today for all your plumbing, remodeling, and restoration needs. We look forward to working with you!

Profile Picture
Recommended by75%of homeowners
Avatar for Handy Hubby
Handy Hubby
3.3(
43
)
Tankless Water Heater - Repair

Serving Bay Shore, NY and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"Handy Hubby Steve repaired cement stairs and installed a new outside back door. He did an awesome job. Steve was always on time and made sure everything was done properly. His prices were very reasonable. Great personality. Very personable. I will definitely use him in the future for any other repairs I need done."
Stand Alone  Structure
Painted wood porch
Large deck and covered area
Large deck and covered area
Before - Pad removed

+5

Recommended by78%of homeowners
Avatar for Energywise, Inc.
Energywise, Inc.
1.0(
1
)
Tankless Water Heater - Repair

Serving Bay Shore, 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
HomeServe of Long Island
2.5(
1
)
Tankless Water Heater - Repair

Serving Bay Shore, NY and surrounding areas

Approved

In business since 2003

Free estimates

Credit card accepted

HomeServe Energy Services (HES) provides reliable heating and cooling experts that service over 1,000 communities in 26 counties across New York, Massachusetts and Rhode Island, from five “depot” sites supporting metro New York, southern New Jersey, Rhode Island and eastern Massachusetts. With almost 200 technicians (including certified refrigerant handling technicians and NATE-certified technicians), HomeServe provides emergency heating, cooling and water heater repairs as well as tune-ups and new equipment installations. \n

1-800-Plumber +Air of Central Long Island
New to Angi
Tankless Water Heater - Repair

Serving Bay Shore, NY and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

1800-Plumber +Air is located in Central Long Island, NY and is focused on being the BEST! It’s not about being better than everyone else, instead our focus is on providing you with the fast, dependable plumbing and emergency services when you need it most. Our goal is to give you the BEST experience you have ever received from a service based business.

2 neighbors recently requested a quote
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