Tankless Water Heaters

Expert Tankless Water Heater Installations & Repairs in Nassau County

Tankless water heaters aren’t just a modern upgrade—they’re a game-changer for anyone tired of running out of hot water or wasting energy on a bulky tank that’s constantly working. These sleek, on-demand systems deliver hot water exactly when you need it, and they do it with serious efficiency.

At NY Boiler & Repair, we specialize in installing and repairing tankless water heaters for both homes and businesses, making sure your system runs smoothly, saves energy, and keeps those showers consistently hot. If your current unit is acting up—or you’re ready to make the switch—we’re here to make it easy.

Understand the Difference: Tankless Water Heater vs. Traditional Water Heater

When it comes to hot water, not all systems are built the same. Choosing between a traditional water heater and a tankless one depends on your household’s needs, space, and energy goals. Here’s a quick breakdown to help you understand the key differences:

Traditional Water Heater (Tank Style)

Stores a set amount of hot water (usually 30-80 gallons)
Uses more energy to keep water hot 24/7
Lower upfront cost, but higher energy bills over time
Takes up more physical space
May run out of hot water during heavy use

Tankless Water Heater (On-Demand)

Heats water only when you need it
More energy-efficient and eco-friendly
Higher upfront cost, but long-term savings
Compact design, great for small spaces
Endless hot water for back-to-back use

No Tank Required—Our Tankless Water Heater Installation

Installing a tankless water heater isn’t just a swap—it’s a smart upgrade for your home. Our team starts by assessing your home’s hot water needs, gas or electric setup, and overall system compatibility. Once we’ve dialed that in, we remove your old tank, rework the plumbing and ventilation as needed, and install the sleek new unit right on your wall. This frees up significant floor space and boosts efficiency all at once.

Once the tankless water heater is installed, our technicians will run tests to guarantee your new system is ready to deliver unlimited hot water the moment you need it. Don’t know how to work your new system? No worries! We’ll walk you through a step-by-step process of how to operate your new tankless water heater so there’s never any confusion or frustration down the line.

When the Hot Water Stops, We Start Fixing

Tankless water heaters are built for efficiency, but even the best systems can have problems. If yours is giving you the cold shoulder—inconsistent temperatures, strange error codes, or no hot water at all—we’re on it.

Our tankless water heater repair services start with a full diagnostic to pinpoint the issue. These could include clogged filters, ignition failures, mineral buildup, or faulty sensors. Once we find the problem, we get to work with precision repairs that restore your system’s performance.

If you’re experiencing any of these issues, don’t hesitate to reach out to us today! We’d be happy to restore your tankless water heater to its former glory! .

Answering all of Nassau County’s Tankless Water Heater Questions

How does a tankless water heater work?

A tankless water heater works by heating water on demand, meaning it only heats the water when you need it, rather than storing it in a tank like traditional models. When you turn on a hot water tap, cold water flows through the unit, and a heating element (either gas or electric) quickly warms it to the desired temperature.

Because it doesn’t store hot water, a tankless unit can provide an endless supply of hot water, as long as the system is sized properly for your needs. Plus, its on-demand nature makes it far more energy-efficient since it eliminates the need to keep a large tank of water heated at all times.

What brands of tankless water heaters do you repair and install?

At NY Boiler & Repair, we specialize in repairing and installing a wide range of high-quality tankless water heaters. As a certified Navien technician, we’re proud to work with some of the most trusted brands in the industry, including:

Navien
Rinnai
Noritz
Laars
Bradford White
NTI
A.O. Smith
Rheem
John Wood
Bock
Energy Kinetics (System 2000)

What size tankless water heaters are best for my home?

Tankless water heaters come in a variety of sizes to suit different household needs. The size you need depends on the number of people in your home, how many hot water outlets you use at once, and your typical hot water consumption.

Some general guidelines include:

Small Units (Single Bathroom/Single Appliance Use): These are great for smaller homes or apartments with minimal hot water demand. They can supply hot water for one fixture at a time, like a shower or sink.
Medium Units (Multiple Fixtures): Suitable for homes with 2-3 bathrooms and moderate water usage, such as multiple people taking showers or running appliances like a dishwasher at once.
Large Units (Whole House Use): These units are designed to handle higher demands, like large families or homes with multiple bathrooms and high hot water usage. They can supply hot water for multiple fixtures simultaneously without running out.

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Luis and company were absolute lifesavers today. AC died on me and with one quick call, was able to meet him at his office for the vital part I needed. He was nice enough to walk me through the easy ...

Looking forward to being a long time customer!

Great first experience!! Technician was knowledgeable & friendly. Took his time checking my system & explained things so that I could understand. Looking forward to being a long time customer!

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Read reviews from our satisfied customers.

Committed to doing the job well

Excellent professionals, committed to doing the job well. I am satisfied with their work and would recommend their services.

Very very happy

Wonderful company Great. Service. I would recommend this company to everyone. They did an awesome, amazing job. Very very happy

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Ask Us About Our Financing Options

We understand that some projects require additional assistance. Contact us for more information about our options. Assistance is available for new install and repair.

Ask Us About Our Financing Options

We understand that some projects require additional assistance. Contact us for more information about our options. Assistance is available for new install and repair.

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(917) 468-2325

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