Tankless and On-Demand Water Heaters

Efficient, Endless Hot Water for Long Island Homes

Tankless hot water heaters, also known as on-demand water heaters, are an innovative solution for providing hot water in your home. Unlike traditional tank water heaters that store and heat a large volume of water, tankless systems heat water directly as it flows through the unit. This means you get hot water whenever you need it without the limitations of a storage tank.

To learn more about efficient hot water solutions, call us at 516.488.1800 and we’ll be happy to help.

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Endless Hot Water
On Demand, Anytime

High Efficiency
Save on Energy Costs

Save Space
Small, Sleek & Wall Mounted

Benefits of Tankless Hot Water Heaters

  1. Energy Efficiency: Tankless water heaters are highly energy-efficient because they only heat water when it’s needed. This can lead to significant energy savings and lower utility bills compared to traditional tank heaters.

  2. Endless Hot Water: With a tankless system, you’ll never run out of hot water. This is especially beneficial for large households or homes with high hot water demand.

  3. Space Saving: These units are compact and can be installed in smaller spaces. They can be mounted on walls, freeing up valuable floor space in your home.

  4. Longer Lifespan: Tankless water heaters typically have a longer lifespan than traditional tank heaters. With proper maintenance, a tankless unit can last up to 20 years or more.

  5. Environmental Impact: By reducing energy consumption, tankless water heaters help lower your carbon footprint, making them an environmentally friendly option for your home.
Hot water from faucet

How Do Tankless/On Demand Water Heaters Work?

Tankless water heaters, also known as on-demand water heaters, heat water directly without the need for a storage tank. When you turn on a hot water tap, cold water travels through a pipe into the unit. An electric element or gas burner then heats the water, providing a continuous supply of hot water.

Since tankless water heaters only heat water as it's needed, they are more energy-efficient and can help reduce your utility bills.

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    Pay Nothing Until You Are Completely Satisfied


    You can expect the following from our techs when they do work for you:

    • They will care for your home and complete the job with speed and precision.
    • They will not wear shoes on your carpets.
    • They will clean up when they are finished and take personal responsibility for your satisfaction.
    • They will not swear in your home.
    • They will not smoke in your home.
    • They are drug-free.

    If you’re not completely happy when our technicians are done with the job, you won’t pay until you are totally satisfied with their work. The next time you need heating and cooling work done, call T.F. O’Brien and experience the difference.

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    Superior Craftsmen with Great Attitudes and Work Ethic

    Our people are passionate about sharing their technical expertise to make every day more comfortable in our customers’ homes and businesses.

    • NATE Certified Technicians
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    • Professional Engineers (PE)
    • Family Owned since 1934
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    • A Huntington Township Chamber of Commerce Member
    • A New Hyde Park Chamber of Commerce Member
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    Financing Available


    If you're looking to upgrade your system, but you have to work within a budget, then let T.F. O'Brien help make things a little easier with our financing options, subject to credit approval.