Best Tankless Water Heater Cost 2026: Affordable Efficiency

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14kW Tankless Water Heater Electric

Instant Hot Water On Demand

The 14kW tankless water heater electric by Orbek offers the convenience of endless hot water on demand. This unit can supply up to 3.38 GPM, making it ideal for 2-3 points of use, such as multiple showers or sinks. The moment you turn on the tap, the water heats up in just 3 seconds, providing a consistent flow of hot water without any interruptions. Whether you’re washing dishes or taking a shower, this system ensures you’ll never have to wait for hot water again. Plus, with a 240V power requirement, it’s a powerful unit designed to handle moderate to high usage without breaking a sweat.

Installation is a breeze for most homes, but it’s essential to ensure you have the necessary setup: a 240V/60AMP two-pole breaker and 6 AWG wiring. For those who dread the thought of complex installations, this electric heater simplifies the process with a compact size of 14.2”H x 9.5”L x 3.1”W, saving up to 50% of space compared to traditional tank water heaters. Its small footprint makes it an ideal choice for homes with limited space. For those unfamiliar with plumbing, professional installation is advised to ensure everything works seamlessly.

Energy Efficiency You Can Feel

What sets the Orbek tankless water heater apart from traditional tank models is its energy efficiency. The innovative water-electricity separation technology helps reduce scale and corrosion, optimizing performance over time. Compared to conventional tank heaters, this electric heater can save up to 60% on electricity costs. Imagine not only enjoying a steady supply of hot water but also cutting down on your monthly energy bill. This is particularly beneficial for households where water usage is consistent throughout the day, such as in busy families or homes with frequent guests.

The Orbek heater doesn’t just deliver on savings, it also protects your home. Equipped with advanced safety features like leakage protection, over-temperature protection, and dry-heating protection, it ensures that your home stays safe from potential hazards. The unit's energy-efficient design and built-in protections make it a reliable choice for anyone looking for safety and performance in a single package.

Temperature Stability For a Perfect Shower

The Orbek tankless water heater is engineered for consistent, stable temperature control. With a built-in chip that adjusts heating power 20,000 times per second, the system keeps water temperature stable within 1°F. Whether you're adjusting to a lukewarm or hot shower, you’ll never experience temperature fluctuations that could ruin your shower experience. It’s a game-changer for those sensitive to water temperature, providing a spa-like experience every time.

Not only does it deliver hot water quickly, but its LED digital display allows for precise temperature adjustments between 86°F and 140°F. The intuitive, high-definition screen features soft lighting, making it easy to check and modify the temperature even in the dark. This feature brings an added level of convenience, especially in households where multiple people use the same water source and require different temperatures for various activities.

Compact Design & Easy Installation

One of the best features of the Orbek tankless water heater is its compact design. Unlike traditional water heaters that take up a large amount of space, the Orbek unit can be tucked away in tight corners, freeing up valuable space in your home. Whether you install it in your utility room or bathroom, its sleek and modern appearance ensures it blends seamlessly with your home decor.

For anyone concerned about the installation process, Orbek has made it easier with structural improvements that facilitate hassle-free setup. With a small form factor and clear installation guidelines, even those with minimal DIY skills can install it with some help. If you're unsure, professional help is always available to ensure everything runs smoothly. The system comes with a comprehensive after-sale service, including long-term return and exchange options, as well as technical consulting support for any future troubleshooting.

Advanced Security Features

Orbek has prioritized safety in their 14kW tankless water heater, incorporating advanced features to ensure your peace of mind. ETL certified, it includes several built-in protections to prevent accidents in case of overheating, leaks, or malfunctions. Whether you're worried about power surges or potential leaks, the system has multiple fail-safes to prevent damage and ensure your water heater operates normally throughout its lifespan. The extra layer of security makes it a trustworthy choice for anyone investing in a long-lasting, reliable water heater.

The heater’s dry-heating protection feature is particularly useful in preventing system damage when the heater is running without water. Additionally, its resistance to lighting strikes further reinforces its reliability. These safety features ensure your investment lasts while keeping your home safe from any electrical or water-related incidents. With these added protections, Orbek is a leader in ensuring not only comfort but safety as well.

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18kW Tankless Water Heater Electric

Instant Hot Water, Anytime

There’s nothing more frustrating than running out of hot water in the middle of a shower. With the 18kW tankless water heater electric by Orbek, this headache becomes a thing of the past. This model provides up to 4.17 GPM of hot water on demand, making it perfect for multiple fixtures like showers and sinks. Whether you’re hosting family or dealing with high water demand, you won’t have to worry about waiting for hot water. This unit heats up in just 3 seconds, ensuring your daily routine stays smooth and uninterrupted.

One of the standout features is the constant supply of hot water even when multiple fixtures are running. The Orbek unit is ideal for households with high water usage, whether it's multiple bathrooms or the kitchen and laundry working at the same time. Its ability to maintain a steady flow of hot water without running out or requiring a tank makes it a superior choice compared to traditional water heaters that often run out of hot water when you need it most.

Efficient, Money-Saving Operation

If you’re tired of high energy bills from traditional water heaters, the Orbek 18kW tankless heater is here to offer relief. Utilizing water-electricity separation technology, this electric water heater minimizes scale and corrosion, which not only helps maintain its performance but also reduces maintenance costs. With up to 60% energy savings compared to tank-style heaters, this unit is not just a high-performance option, it’s also an affordable one in the long run.

The technology built into the unit ensures that the energy it consumes is used efficiently, heating only the water you need, when you need it. This on-demand nature helps eliminate the standby heat losses that traditional heaters suffer from, making it an eco-friendly solution. Whether you're using hot water throughout the day or just once in a while, this model ensures you're not wasting energy on heating water you're not using.

Stable Temperature, No Surprises

Ever hopped in the shower and been greeted by a blast of cold water because the system couldn’t keep up? With the Orbek tankless heater, that’s not a worry. The built-in chip adjusts heating power 20,000 times per second, ensuring the water temperature remains stable within 1°F. That means no more cold spots or sudden temperature spikes. Whether you're washing dishes or enjoying a long soak in the bath, the temperature remains exactly where you set it.

The stable temperature control offers a level of convenience and comfort that few other models can match. It’s the difference between a pleasant shower and one that leaves you frustrated. No more adjusting the dial halfway through because the water gets too hot or too cold. This system is as steady as they come, making it ideal for those who want consistent comfort every time they turn on the tap.

Compact, Space-Saving Design

Unlike bulky traditional heaters that take up a large portion of your utility room, the Orbek tankless water heater is compact, measuring just 17”H x 13.0”L x 3.9”W. This design saves over 50% of the space compared to tank models, giving you more room for other essentials. If space is tight in your home, this unit offers a great solution, fitting neatly into corners and tight spots without causing clutter.

Along with its compact size, Orbek has made installation a breeze. It requires two 240V/40A two-pole breakers and two sets of 8 AWG wires, making it a practical choice for most homes. Even if you’ve never installed a tankless water heater before, the improvements made to the product’s structure simplify the process, so you can get it up and running in no time. Plus, with a sleek, modern design, it doesn’t just save space, it also looks great in any setting.

Built for Safety

Safety is always a concern when dealing with electrical appliances, and the Orbek 18kW tankless heater doesn’t fall short. With its ETL certification and a suite of safety features, including leakage protection, over-temperature protection, and dry-heating protection, this unit ensures peace of mind while it delivers hot water. Whether you're concerned about electrical malfunctions or temperature fluctuations, this unit’s multiple safety features protect you and your family every time you use it.

The inclusion of lighting resistance further enhances its durability, ensuring that it remains operational even in the most challenging conditions. Each Orbek unit undergoes rigorous testing before leaving the factory, so you can trust it to perform reliably and safely for years to come.

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Rinnai RX199iN Condensing Smart Sense Tankless Water Heater

Endless Hot Water in a Compact Design

Imagine trying to shower with a family of five, only to be left with freezing cold water halfway through. That’s a nightmare most of us know all too well. With the Rinnai RX199iN condensing tankless water heater, that’s a thing of the past. Despite its compact size, about the size of a small suitcase, this powerhouse offers up to 11.1 GPM. That means you can run up to seven fixtures simultaneously, perfect for busy households with multiple bathrooms or a kitchen and laundry running at the same time. No more waiting for water to heat up or hoping the shower won’t go cold. You’ll never run out of hot water with this tankless unit, whether it’s installed indoors or outdoors.

Whether you’re dealing with a bustling morning routine or hosting guests, the ability to have hot water flowing throughout your home is a game-changer. The Rinnai RX199iN comes with a Smart Sense gas control system, allowing you to power it with either propane or natural gas. This flexibility means it’s ready to work with whatever fuel source is available to you, making it an excellent choice for both urban and rural settings. The venting system is designed to be versatile too, with the new Versa Vent system making it easy to install in various configurations.

Smart Features for Effortless Comfort

One of the things that make the Rinnai RX199iN stand out is its user-friendly design. It doesn’t just keep water hot; it does so efficiently. With a UEF rating of .98, this unit offers incredibly high energy efficiency, reducing your overall energy consumption. It’s built with a Quick Flush feature that simplifies maintenance, allowing you to keep it running at peak performance without the hassle of complicated cleaning processes. Plus, it’s equipped with WiFi control (via the optional Controlr module), giving you the ability to manage your hot water remotely. Imagine adjusting the temperature while lounging on the couch, all through a simple app!

The modern interface adds another layer of convenience, making adjustments straightforward even if you’ve never used a tankless water heater before. These features combine to not only provide endless hot water but also ensure you’re saving money by running an efficient, well-maintained system. If you’re someone who values comfort and ease of use, this unit is definitely worth considering for your home.

Perfect for Any Home or Situation

Another thing to love about the Rinnai RX199iN is its adaptability. Thanks to the optional outdoor installation, it’s as at home in the backyard as it is in your basement. If you're tight on indoor space or just prefer to keep your utilities outside, this unit has you covered. The versatile venting system makes it possible to mount this heater in various locations, ensuring it fits perfectly in your home setup.

Whether you're setting it up in a small apartment or a large house, the unit’s compact size and powerful performance ensure it delivers high-efficiency water heating without taking up valuable space. The fact that it supports multiple fixtures at once means that even in a home with several people, you won’t have to worry about running out of hot water during peak usage times. This is a solid option for both residential and light commercial applications, making it a great investment for anyone needing reliable, on-demand hot water.

Easy Installation and Expert Support

It’s important to remember that while the Rinnai RX199iN is easy to use, professional installation is recommended. Rinnai’s network of certified technicians ensures that your water heater is installed safely and efficiently. If you're concerned about setup, the Rinnai Central App is a great resource, offering support for installation, service, and troubleshooting. The app is designed to help guide you through the process, giving you confidence that the system is running correctly from day one.

The company doesn’t recommend DIY installations, and rightly so, the complexity of venting and gas line setups requires professional expertise to ensure everything is up to code. The convenience of professional support is an added bonus, allowing you to enjoy peace of mind knowing the unit is properly installed and functioning as it should.

Reliability You Can Count On

When you’re investing in a tankless water heater, reliability is key. The Rinnai RX199iN is ETL certified, ensuring it meets all safety and quality standards. It undergoes rigorous testing before leaving the factory, so you can rest assured that it’s built to last. Its robust construction and advanced features make it an excellent choice for anyone looking for a long-term solution to their hot water needs.

With features like leakage protection, over-temperature protection, and dry-heating protection, this unit is designed to minimize risks and ensure safe operation. Plus, its energy efficiency makes it a smart choice for those looking to lower their utility bills. This heater doesn’t just perform well, it’s built to last, providing you with reliable, uninterrupted hot water for years to come.

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Rheem 18kW 240V Tankless Electric Water Heater

Effortless Hot Water at Your Fingertips

If you’ve ever found yourself standing under a lukewarm shower, waiting for the hot water to kick in, you know how frustrating it can be. That’s where the Rheem 18kW tankless electric water heater comes in, offering a reliable solution to ensure hot water is always available, exactly when you need it. With a flow rate of up to 4.4 GPM, this model is designed to handle multiple fixtures at once, making it perfect for homes with multiple bathrooms or high water demand. The unit adjusts its power automatically to meet your hot water needs, so you’ll never be caught off guard by a cold shower again.

Another impressive feature of the Rheem 18kW unit is its advanced self-modulation. Unlike traditional water heaters, which constantly run at full power, this unit intelligently adjusts its energy usage based on your current needs. So, whether you're running just one faucet or all your showers at once, it delivers the perfect amount of hot water without wasting energy. This efficiency makes it not only a great choice for comfort but also for reducing your energy bills in the long run.

Smart Temperature Control for Precision Heating

The Rheem 18kW tankless electric heater is all about precision. The unit comes equipped with an external digital thermostatic control featuring an LED display, offering +/- 1-degree accuracy. No more fiddling with dials or guessing the temperature; you can easily adjust it to your exact preference. The high-tech temperature control makes it perfect for families or individuals who want the perfect, consistent water temperature for every use, from showering to doing dishes.

With a system designed to maintain a consistent flow of hot water, the unit ensures you can enjoy a comfortable shower every time. Plus, with such precise temperature control, it’s ideal for anyone with specific needs, such as households with young children or elderly family members who are more sensitive to water temperature.

Durable and Easy to Maintain

Built to last, the Rheem 18kW tankless heater features durable copper immersion heating elements, which not only deliver excellent heat transfer but are also field serviceable. This means you can maintain the unit easily without the need for expensive professional repairs. The copper material is highly resistant to corrosion, so you won’t have to worry about rust or buildup interfering with performance over time.

Furthermore, the unit’s threaded for easy replacement design ensures that any necessary repairs or replacements are hassle-free. Whether it’s a heating element or any other part, the system is designed with user convenience in mind. And, with its simple installation process, setting up the unit in your home is straightforward. Its bottom 3/4-inch NPT water connections make installation easier for both professionals and DIY enthusiasts.

Compact, Efficient, and Cost-Effective

If you're dealing with limited space, the Rheem 18kW tankless electric heater offers a compact solution that won’t take up valuable room in your utility area. Its slim profile is ideal for homes where space is at a premium, but it doesn't sacrifice performance for size. You get powerful, endless hot water in a sleek, space-saving design that fits effortlessly into tight spots.

When you factor in the energy savings that come with the smart modulation system, this water heater proves to be an excellent investment in both the short and long term. You’ll enjoy reduced energy costs while getting the same, if not better, hot water performance than a bulky traditional water heater. And with the option to easily replace parts, your tankless heater will serve you reliably for years to come, keeping costs low and efficiency high.

Reliable Performance for Everyday Use

The Rheem 18kW tankless electric heater is designed to provide reliable performance day after day. Whether you’re taking a quick shower or running multiple fixtures, the unit maintains a consistent temperature and flow. Thanks to its digital temperature display, you can easily monitor and adjust the heat, ensuring your water always meets your comfort standards.

What sets this model apart is its high efficiency and low-maintenance design. It’s a set-and-forget appliance that requires minimal intervention, which is perfect for busy households or individuals who don’t want to worry about constant upkeep. Whether it’s for a busy family home or a smaller apartment, the Rheem 18kW unit meets your hot water needs while keeping energy consumption to a minimum.

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EcoSmart ECO 11 Electric Tankless Water Heater

Efficient Hot Water, No Tank Required

If you’ve ever dealt with the inconvenience of a traditional tank heater that takes up too much space and runs out of hot water too quickly, you know the struggle. Enter the EcoSmart ECO 11 electric tankless water heater, a space-saving and energy-efficient solution that ensures you’ll never run out of hot water again. With its patented self-modulating technology, this compact unit only heats the water you need, when you need it. That means no more waiting for your tank to refill or worrying about running out of hot water in the middle of a shower.

Compact and sleek, the EcoSmart ECO 11 is 90% smaller than traditional tank heaters, fitting easily into small spaces, whether it's mounted on the wall or installed at the point of use. Whether you're looking to upgrade your bathroom or need a reliable water heater for a small sink or office breakroom, this unit delivers consistent hot water, all without the bulk of a traditional tank. It's designed to meet the needs of low-flow applications, providing up to 3.1 gallons-per-minute of hot water depending on your inlet temperature. This means it’s perfect for smaller spaces that don’t require a large, bulky water heater.

On-Demand Heating, Energy Savings

The most impressive feature of the EcoSmart ECO 11 is its energy efficiency. With 99% thermal energy efficiency, this tankless water heater heats water only when it's needed. Unlike conventional heaters, which constantly maintain a reservoir of hot water, this model heats water on-demand, saving both energy and money. You won’t have to worry about wasting power to maintain the water temperature in a tank when you're not using it.

Thanks to its self-modulating technology, the EcoSmart ECO 11 precisely controls the flow rates and water temperature within a single degree of your desired setting. This not only helps maintain a constant temperature but also optimizes energy use, ensuring that you aren’t wasting electricity heating water that you won’t use. This is a huge win for anyone looking to lower their utility bills while still enjoying reliable hot water performance.

Space-Saving Design

Let’s talk about the real space-saving potential of the EcoSmart ECO 11. With dimensions of just 11.5 x 8 x 3.75 inches, this unit is 90% smaller than a conventional tank water heater, which typically takes up a lot of room. This compact design makes it perfect for tight spaces like small bathrooms, kitchens, or offices. If you’re looking to maximize the available space in your home or business, this tankless model offers an excellent solution.

Installation is a breeze, and you can mount it on the wall or install it at the point of use, depending on your needs. This flexibility allows you to place it exactly where it’s most convenient, and it won’t clutter up valuable floor space. Whether you're remodeling a small apartment or installing it in a vacation home, the EcoSmart ECO 11's compact design is ideal for saving space without compromising on performance.

Consistent Performance for Smaller Applications

One area where the EcoSmart ECO 11 truly shines is its ability to provide consistent hot water for smaller applications, like a bathroom sink or a small office breakroom. With a maximum flow rate of 3.1 GPM, this unit is perfect for low-flow applications. However, it’s important to note that this model may not be suitable for larger homes or high-demand situations like large family homes with multiple bathrooms running simultaneously. If you have a high-demand household, you may need to consider a larger model to meet your needs.

That being said, for those who don’t require high flow rates, this unit provides the perfect balance of performance and efficiency. It’s not designed for whole-house heating but is ideal for individual use cases, providing reliable hot water for a bathroom or small sink. It's also a great choice for anyone looking for a water heater for a smaller property or specific areas of the home that don't need constant hot water.

Easy Installation and Maintenance

Another highlight of the EcoSmart ECO 11 is its easy installation process. With its compact size and simple water connections, setting up the unit is straightforward. The unit comes with 3/4 inch NPT water connections, making it compatible with most plumbing systems. However, it’s always recommended to have a professional plumber handle the installation to ensure the system is set up properly and safely.

Maintenance is minimal compared to traditional tank heaters. The EcoSmart ECO 11 comes with a Quick-Connect feature for easy flushing, and its energy-efficient design means you won’t need to replace it as often as a traditional tank heater. With proper care, this unit is built to last and will continue to perform reliably for years to come, all while keeping your energy consumption low.