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TRUSTED BY OSSINING, NY HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon63
    Verified water heater services reviews

Top-Rated Water heater pros in Ossining - Updated Nov 2026

Avatar for David Drain and Sewer
David Drain and Sewer
4.4(
135
)
Water Heater - Install or ReplaceWater Heater - Install or Replace - For BusinessWater Heater - Repair or Service

Serving Ossining, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Emergency services offered

Warranties offered

"Was able to come the same day. He picked up and installed a new gas hot water heater and the Installation costs were very reasonable. Would highly recommend. He even called after the installation to make sure I was getting hot water and there were no leaks."
Recent Work
Recent Work
Recent Work
Recent Work
Recent Work

+10

Response time4 hrs
Response rate99%
Recommended by64%of homeowners
Avatar for Aldos plumbing
Aldos plumbing
5.0(
35
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Ossining, NY and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

"When we realized our water heater was leaking, Aldo's was fast both to respond to the inquiry and to get us a replacement; within 36 hours, we were back to having hot water with a new tankless setup. Pricing was within the range we expected and the team was very communicative; I'd hire Aldo's plumbing again!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+41

1 neighbors recently requested a quote
Recommended by44%of homeowners
Avatar for NY Connect Plumbing & Heating
NY Connect Plumbing & Heating
4.6(
50
)
Water Heater - Install or ReplaceWater Heater - Install or Replace - For Business

Serving Ossining, NY and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"These guys are great. Developed a major water leak on Saturday of the Easter weekend. They came to the house within an hour of the call. They needed a part that was not easy to find and they went searching over westchester on a Saturday afternoon until they found it. I thought we would not have running water until Monday but they got it done. Worked until late and the water was running by dinner. They are highly professional and nice people who got the job done. They left everything neat and tidy. I would highly (highly) recommend them. This is from a guy who never posts comments on web sets."
Weil Mclean ultra 550
Navien Combi Boiler Install
Foxwoods
Foxwoods
Response time10 hrs
1 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Cassidy Plumbing and Heating, Inc
Cassidy Plumbing and Heating, Inc
4.5(
31
)
Tankless Water Heater - InstallTankless Water Heater - Install - For BusinessTankless Water Heater - Repair+5 more

Serving Ossining, NY and surrounding areas

Approved

Super Service Award Winner

In business since 1992

Emergency services offered

Warranties offered

"Anji recommended four plumbers. Cassidy was the first to respond on Friday afternoon. One other plumber responded but I could not understand his heavy accent, and he asked me if I wanted him to replace the whole burner assembly. That made no sense to me and I questioned him about it. Suddenly he became "too busy" and hung up the phone. Another plumber didn't respond until Monday morning. Too late. The fourth plumber never responded at all. Cassidy asked if it was an emergency or could wait until Monday. I said Monday. and asked what time? I did not get an answer on Friday. Around 8:30P I called and got an answering service which told me that I wouldn't get a response until Monday because their office closed at 8:00P. I had asked about what time on Monday before 6:00P George arrived Monday morning. He was friendly. He knew what he was doing. He replaced the thermocouple. All work was done neatly and professionally. We have hot water again. I'd use Cassidy again."
Heating System
Heating System
Plumbing
The Team
Navien Water Heater

+3

Response time2 days
Response rate100%
8 neighbors recently requested a quote
Affordable Heating & Cooling of NY Inc.
4.3(
53
)
Water Heater - Install or ReplaceTankless Water Heater - InstallTankless Water Heater - Install - For Business+5 more

Serving Ossining, NY and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"Dave saved us money and got the job done. Another company diagnosed the problem incorrectly and recommended changing a more expensive part that wouldn't have solved the problem. Dave did his own thorough assessment, found the real issue and fixed it right away. Couldn't be more grateful for heat and hot water. Thank you Dave."
Response time4 hrs
Response rate86%
10 neighbors recently requested a quote
Charles Mechanical
5.0(
37
)
Water Heater - Install or ReplaceTankless Water Heater - InstallTankless Water Heater - Install - For Business+5 more

Serving Ossining, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Credit card accepted

Offers commercial services

"Bob and Tom are great contractors. They not only did an awesome job replacing my water heater, they also identified issues in my chimney while they were connecting the vent pipe for the water heater. I will hire them again for separate HVAC projects."
Response time10 hrs
Response rate93%
9 neighbors recently requested a quote
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Water Heaters FAQs, answered by experts

An average-sized empty water heater weighs around 150 pounds. Tankless water heaters are much lighter, weighing between 10 and 50 pounds. The smaller size and added convenience come at a price, though—tankless water heaters average about twice the price of their traditional counterparts.

Yes, you can replace a current tank water heater with a tankless model or vice versa. If you’re maintaining the same fuel source—gas or electricity—the switchover should be smooth. A conventional tank requires open floor space, while a tankless model can be wall-mounted. If you’re switching to a tank water heater, you might need to clear space for it. Gas-powered tankless water heaters need a large volume of gas when they start running to heat the water instantly. You might need to increase the size of the gas line when going from a tank to a tankless model.

No. Expansion tanks must be installed on the supply side (where heated water flows out) of the boiler. There’s also a list of other requirements for most boilers, including being above the pressure relief valves, being on the inner side of any circulator, and more. Your installation manual should have more information on expansion tank installation requirements and what sort of tank the system is made for.

While not all homes require a hot water heater expansion tank, they are necessary in most newer homes and are often mandated by local building codes. Codes typically require an expansion tank if your plumbing system is a 'closed-loop' system, which often includes a backflow preventer or pressure regulator on the main water line. Some municipalities have specific requirements. Installing an expansion tank on a closed system is crucial, as it prevents excess pressure that can damage your water heater and other appliances, potentially shortening their lifespan. However, tankless water heaters do not require an expansion tank.

If you are having trouble determining the right breaker size for your water heater, it is a great idea to contact an electrician near you to help. They can help you determine the best option for your home and install the circuit breaker for you, ensuring that you have all the proper permits and that your circuit breaker won’t overload, which could lead to fire and other damage.

The Ossining, NY homeowners’ guide to water heater services

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