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Top-Rated Water heater repair or service pros in East Setauket - Updated Nov 2026

Avatar for Cs mechanical inc
Cs mechanical inc
5.0(
56
)
Water Heater - Repair or Service

Serving East Setauket, NY and surrounding areas

Approved

Super Service Award Winner

Emergency services offered

Customers say: True professional

"Chris was very responsive to our service request, had prompt availability, and was very friendly polite and trustworthy. His plumbing expertise was extremely thorough with reasonable prices, I'd highly recommend his services."
Install roughing to
Install new check valve
Old plumbing
Replace and repipe heater
Install roughing to

+35

Response time10 hrs
Recommended by85%of homeowners
Avatar for All Weather Heating & Cooling
All Weather Heating & Cooling
4.5(
70
)
Water Heater - Repair or Service

Serving East Setauket, 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."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+13

Response time3 days
7 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Surefire Mechanical Corporation
Surefire Mechanical Corporation
4.5(
157
)
Water Heater - Repair or Service

Serving East Setauket, NY and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"Called on a Sunday evening and there was a serviceman at my door by 8 AM Monday morning. Mike, the serviceman, was extremely knowledgeable, professional and courteous. Will recommend this company to anyone I know who needs air conditioning or servicing. Thanks again for the speedy service and knowledgeable serviceman who repaired the air conditioner quickly!"
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 Abstract Plumbing, Heating and A/C
Abstract Plumbing, Heating and A/C
4.5(
40
)
Water Heater - Repair or Service

Serving East Setauket, NY and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"Mike and Bobby, the plumbers who came to repair my burst pipe, were great. Courteous, professional, knowledgeable, and very informative. If I need plumbing service in the future, I will definitely ask for them. i would highly recommend Abstract Plumbing. I feel they are honest and reliable."
Response time3 hrs
7 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Mayjac Plumbing, Inc.
Mayjac Plumbing, Inc.
4.6(
15
)
Water Heater - Repair or Service

Serving East Setauket, NY and surrounding areas

Approved

In business since 2015

Small jobs welcome

Offers commercial services

"Service was considerate, professional and worked with our time schedule. Will call them for all our future plumbing needs. It is so reassuring to have a reliable plumber on our contact list! Highly recommend Joe and his team."
Before Installations
After installations
Whole House PVC Piping 7
Whole House PVC Piping 6
Whole House PVC Piping 5

+16

Response time10 hrs
2 neighbors recently requested a quote
Recommended by100%of homeowners
McIntosh Plumbing & Heating
4.3(
15
)
Water Heater - Repair or Service

Serving East Setauket, NY and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"Great service! He came in, gave good estimate on replacing our whole system. I was also doing some remodeling and he was able to work around that, worked on time. Never had a problem, the only time he's had to come back was when I had more work for him. Pricing is reasonable."
Response time2 hrs
Response rate92%
2 neighbors recently requested a quote
Avatar for BERARDI ELECTRICAL CONTRACTING, INC.
BERARDI ELECTRICAL CONTRACTING, INC.
3.7(
72
)
Water Heater - Repair or Service

Serving East Setauket, 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
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FAQs for water heater repair or service projects in East Setauket, NY

Warning signs include fluctuating water temperatures, a pilot light that repeatedly goes out, unusual noises from the tank, or complete heating failure. You might also detect a rotten egg smell, indicating a potential gas leak, or notice water that never reaches the proper temperature. If your water heater is over eight years old and displaying these symptoms, the gas valve is a likely culprit. Professional inspection is recommended, especially if gas odors are present.

Water heater gas valves are not universally interchangeable. Each valve must match your specific water heater's make, model, and specifications. Important compatibility factors include gas type (natural gas vs. propane), BTU rating, connection types, and physical dimensions. Using an incorrect valve can result in poor performance, premature failure, or dangerous gas leaks. Always consult your water heater's documentation or a professional plumber to identify the appropriate replacement valve for your unit.

The East Setauket, NY homeowners’ guide to water heater repair or services

From average costs to expert advice, get all the answers you need to get your job done.