Tankless Water Heater Installation in Long Island

Endless Hot Water, Maximum Efficiency

 Imagine never running out of hot water — even with back-to-back showers, laundry, and dishwashing. That’s the power of tankless water heaters. These modern on-demand systems heat water only when you need it, delivering unlimited hot water while reducing energy waste. Homeowners across East Northport, Huntington, Commack, Smithtown, and beyond trust us for seamless tankless installations designed for long-term comfort and efficiency.

Woman inspecting a white water heater in a gray room. She wears glasses and has a bun, hand reaching toward the appliance.

Why Choose a Tankless Water Heater?

Endless Hot Water

Tankless systems heat water on demand, so you’re never limited by tank size — perfect for large families or busy households.

Lower Energy Bills

Because they only run when hot water is needed, tankless units can reduce energy use by 15–30% compared to standard tanks, saving hundreds over their lifespan.

Longer Lifespan

Tankless heaters often last 20+ years, nearly doubling the life expectancy of many traditional tank units.

Compact, Wall-Mounted Design

Reclaim floor space with a unit that hangs neatly on the wall — ideal for tight utility rooms or closets.

Cleaner Water

With no storage tank, there’s no rust or sediment buildup, meaning cleaner, fresher hot water.

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Is Your Home Ready for Tankless?

ankless systems require proper gas supply, venting, and electrical capacity. During your assessment, we verify:

  • Gas line sizing for high-BTU demand
  • Proper direct-venting location and materials
  • Electrical amperage if installing electric tankless
  • Space and wall structure for mounting the system

Our team handles any necessary adjustments to ensure safe, optimal performance. You’ll get upfront guidance so there are no surprises on installation day.

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Expert Installation From Certified Technicians

We’ve installed tankless water heaters for decades and know how to size and configure each system correctly. As certified installers for leading brands like Rheem, Navien, and Rinnai, we make sure your unit is set up for maximum performance and longevity. We also install flush valve kits for easy maintenance and offer ongoing service to keep your system running like new.



Installation Steps:

  • Home Assessment: Evaluate hot water demand and installation requirements.
  • System Sizing: Recommend the right flow rate for your household.
  • Professional Installation: Safe gas, water, and vent connections by licensed technicians.
  • Testing & Setup: Verify temperature stability, flow, and performance.
  • Owner Guidance: We show you how to use and maintain your new tankless system.
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FAQ

Common Questions About Tankless Water Heaters

  • Are tankless water heaters worth it?

    In most homes, yes. They provide endless hot water, lower energy bills, and a longer system lifespan — making them a smart long-term investment.

  • How much does tankless installation cost?

    Pricing varies by model, fuel type, and installation requirements. We provide free, clear estimates based on your home’s layout and hot water demand.

  • Who installs tankless water heaters near me?

    We do — and we’ve been installing tankless systems across Long Island for decades.

  • Will tankless water heaters work in cold weather?

    Absolutely. Modern units use advanced burners and sensors to maintain steady hot water even in winter temperatures.

  • Can I finance a tankless system?

    Yes — we offer 0% financing for qualified homeowners to make upgrading easier.

Trusted Tankless Installers Across Long Island

Five black stars.

Very professional experience. Install went off smoothly. New system works great.


Martin F.

Professional, quick response to any concerns, project finished in two days and efficient cleanup.


Lucille B.

Great Service - and Big help to get our heating back running


Georg P.

Very professional experience. Install went off smoothly. New system works great.


Martin F.

Professional, quick response to any concerns, project finished in two days and efficient cleanup.


Lucille B.

 Explore Related Water Heating Services

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Water Heater Installation & Replacement

 Compare traditional tank options or explore hybrid systems.

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Water Heater Repair

If your current system can be repaired, our technicians can help.

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Financing Options

Take advantage of 0% financing to make upgrading easier.

Ready for Endless Hot Water?

Upgrade to a high-efficiency tankless system and enjoy unlimited hot water, lower energy bills, and a long-lasting solution for your home. Our team proudly serves all of Long Island with professional, reliable installations.