Best Electric Tankless Hot Water Heater (2025 Update)
Looking for the best electric tankless hot water heater for your home? With so many options on the market, it can be tricky to know where to start. An electric tankless water heater provides hot water on demand without the need for a storage tank. This makes them an energy-efficient option that can save on monthly utility bills. But how do you choose the right one?
Before purchasing an electric tankless hot water heater, consider your household’s hot water needs. How many sinks, showers, appliances, etc. need hot water and at what flow rates? Knowing your home’s requirements will ensure you choose a properly sized heater. You’ll also want to consider your available electrical service. Tankless heaters require a large voltage to operate. Work with an electrician to ensure your home wiring can handle the electrical demands.
Where will the heater be located? Tankless heaters are wall mounted, so consider placement near water lines and electrical connections. You’ll also need to think about controlling the unit. Look for built-in adjustability, WiFi connectivity, and digital displays for ease of use. And don’t forget water quality. Areas with hard water require an electric tankless heater with a built-in descaling system.
Are you overwhelmed yet? Don’t worry. Doing your homework before purchasing will ensure you select the perfect electric tankless hot water heater for your home. Keep reading to learn more about top brands and models on the market today. Let’s dive into the options and determine the best electric tankless water heater for your needs.
10 Best Electric Tankless Hot Water Heater
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The product is ideal for providing hot water instantly and efficiently while saving space and energy.
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Ideal for providing instant hot water under the kitchen sink with a 4 gallon capacity and 120V power supply.
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It is ideal for providing endless hot water and easy installation in residential households for whole house showers.
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This product is ideal for providing instant hot water at a specific location, such as a sink or shower.
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This product is ideal for providing hot water to multiple points of use in the entire US territory.
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Ideal for providing hot water under the kitchen sink in southern regions with no standby losses and self-modulating technology.
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This product is ideal for providing hot water on demand, saving space and energy compared to traditional tank water heaters.
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Ideal for providing constant hot water for two showers, while saving energy and has a versatile installation.
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It is ideal for providing hot water at a specific location, such as a single faucet or shower.
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This product is ideal for indoor installation of a high-capacity, natural gas-powered hot water heater.
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1. Eemax Eem24013 Electric Tankless Water Heater, Blue
If you're tired of running out of hot water mid-shower, a tankless water heater may be just what you need. This innovative appliance provides a continuous supply of hot water, so you'll never have to wait for a tank to refill again. The EEM24013 model is one of the most advanced tankless water heaters available, thanks to its self-modulating technology. This feature allows the unit to adjust how much energy it needs to use based on how much hot water is required, ensuring you're only using as much energy as necessary.
With its compact size, the EEM24013 won't take up valuable storage space in your home. Instead, it can be easily mounted on a wall, saving you even more space. And because it only heats the water that you need, when you need it, this tankless water heater is more energy-efficient than traditional models.
Before purchasing and installing the EEM24013, it's important to verify that it's the correct size for your hot water needs. This will ensure that you have enough hot water to meet your household's demands without wasting energy. With its instant, consistent, and endless supply of hot water, the EEM24013 tankless water heater is a smart choice for any home.
2. Mini Tank Instant Hot Water Heater – Thermomate
Introducing the Point of Use 4 Gallons Mini Tank Water Heater, a reliable and efficient solution for instant hot water at your convenience. With a fast recovery rate, it eliminates the need for waiting and reduces standby loss, providing hot water exactly where you need it.
Measuring at 14.5"W x 14.5"H x 12.9"D, this mini tank water heater boasts a compact design that can be wall or floor mounted under sink/counter. It can be easily installed without the need for special wiring, simply plug it into a standard 120V outlet. At a nominal current of 12amps, it is energy efficient, saving you money on your utility bills.
The thermostat comes with 3 temperature level settings, ranging from 50°F to 149°F, ensuring you get the desired temperature for your hot water needs. With its high-temperature limit protection and freeze mode, it prevents the tank from overheating and freezing, providing safety and peace of mind.
The Point of Use 4 Gallons Mini Tank Water Heater is UL certified and durable, with an enamel coating glass-lined tank for great insulation and to prevent leaks. The Temperature & Pressure Relief valve made in CASH USA is included, and the UL certification guarantees a long service life.
This mini tank water heater has a water connection of 1/2" NPT and electrical requirements of 1.44 kW at 120 volts with a plug-in connection that comes with a 2 feet power cord. It also has a maximum water pressure of 150PSI.
The Point of Use 4 Gallons Mini Tank Water Heater comes with a 3-year limited warranty for the tank and a 1-year warranty for its parts, ensuring its quality and reliability. Additionally, its 24-hour customer service provides assistance whenever you need it.
3. Thermomate 18kw Tankless Water Heater – Endless Hot Water
Introducing the Instant Unlimited Hot Water Tankless Electric Water Heater – the perfect solution for those who want hot water on demand, without the wait time or running out of hot water. This powerful water heater requires 2 x Double-pole 40AMP Breakers to Achieve 240V, but once installed, it can provide hot water in just 3 seconds, and for as long as you need it.
Not only is this water heater convenient, but it can also save you money and space. Thanks to its self-modulating technology, it only uses the energy required to heat water when you need it, making it 99.8% efficient and saving up to 60% on water heating costs compared to traditional tank water heaters. Plus, it has a wall-mounted compact size with no water tank, making it convenient for any space and saving floor space.
The Instant Unlimited Hot Water Tankless Electric Water Heater also has smart operation features. It auto-adjusts energy consumption based on incoming water temperature and flow, ensuring maximum efficiency, continuous stable temperature, and optimal power usage. The digital temperature display allows for easy adjustment in 1° increments, from 80°F to 140°F. Additionally, the heating element is separated from the water tube to reduce scale, corrosion, and mineral buildup, achieving better performance and low maintenance.
Installation of this water heater is easy, and it comes with safety protection features. It is ETL certified with overheating protection and will automatically stop heating when detecting no water. Quality workmanship also ensures that it has leakage protection. Please note that it is essential to ensure this water heater is the correct size for your hot water needs: it draws a maximum of 76amp at 18kW and requires a 2 x Double-POLE 40AMP breaker with a wire gauge of 2 x 8AWG. The unit size is 17.12" x 13.12" x 3.12", and the water connection is 3/4" NPT.
4. Stiebel Eltron 202151 Dhx 15-2 Plus Point-Of-Use Tankless Electronic Water Heater, 240v, 14400 Watts
Introducing the exclusive motor control valve, a highly efficient device designed to reduce flow rate and maintain output temperature. With this innovative valve, you can easily adjust the water flow to your desired temperature, ensuring a comfortable and consistent shower experience every time.
Equipped with a backlit multifunction display, this product offers you a user-friendly interface that is easy to navigate. You can easily customize your shower experience with the output temperature presets, allowing you to select your preferred temperature with just a few clicks.
In addition to its impressive features, this motor control valve also comes with an energy savings calculator. This tool allows you to track your water usage and calculate your energy savings, helping you to save money on your utility bills while also reducing your carbon footprint.
With its sleek design and advanced technology, this motor control valve is a must-have for anyone looking to upgrade their shower system. It is easy to install, durable, and designed to provide you with years of reliable service. Don't settle for an ordinary shower experience – upgrade to the exclusive motor control valve today and start enjoying the ultimate shower experience!
5. Marey Tankless Electric Water Heater – Eco-Silver Solution.
The 220V eco 18Kw unit is a highly efficient tankless water heater that is designed to provide hot water on demand. To ensure the safety and quality of the installation, it requires the installation of two 50 amp breakers by a professional plumber or electrician.
This German-designed water heater is manufactured with high quality stainless steel water channels and heating chambers that are durable and long-lasting. The smart technology used in this unit allows for easy management and simple adjustments on an LCD panel, which allows you to program the exact desired water temperature to optimize electricity consumption.
This water heater is recommended for use in hot climates in the US Southern regions, where it can provide hot water for two simultaneous showers with a flow rate of 2.0 gallons per minute each. In colder regions, it is suitable to provide hot water to a single shower with a flow rate of 2.0 gallons per minute.
One of the key benefits of the tankless water heater is that it saves energy by using up to 60% less energy than conventional tank water heaters. This results in significant cost savings over time, making it a cost-effective choice for residential and commercial properties.
6. Smart Mini Tankless Water Heater For Kitchen Sink
This tankless electric water heater is a reliable and efficient solution for those in need of hot water on demand. It delivers instant hot water without the need for preheating, making it a convenient addition to any kitchen, bathroom, bar, school, hospital, community center, or hair salon.
With a maximum temperature of 131 ℉, this water heater can provide endless hot water suitable for sinks and other similar applications. It is important to note that it is not intended for use in bathing situations.
This hot water heater is equipped with a smart inverter that calculates the minimum required power based on the water flow and temperature, resulting in significant energy and cost savings of up to 90%. The water flow rate and temperature are stable under the chip's control, ensuring consistent and efficient operation.
Multiple safety protection functions have been implemented to ensure user safety, including protection against scalding, leakage, and other potential injuries. The premium PE shell is highly resistant to corrosion and easy to clean, ensuring the longevity of the product.
The electric tankless water heater features a digital display and touch control panel, making it easy to adjust the settings to suit individual needs. Installation is quick and easy with all necessary accessories included, reducing the need for additional expenses or preparation time.
This compact and point-of-use water heater can be installed in any orientation, including horizontally, vertically, or obliquely. It measures 8″L x1.8″W x6″H and weighs 2.84Ib, with a 1/2″NPT NPT and 7.0 kW power rating at 220-240 volts.
In the unlikely event that there are missing manuals due to worker negligence, customer service is available to provide an electronic version. The product includes a one-year warranty and 24-hour customer service support, ensuring customer satisfaction.
7. Eemax Eem24027 Electric Tankless Water Heater, Blue
Looking for a reliable and energy-efficient water heater? Look no further than this tankless water heater! This innovative appliance provides a continuous supply of hot water, so you'll never run out during your shower or bath. Plus, it only heats the water you need, when you need it, so you won't waste energy or money on heating water you're not using.
This tankless water heater requires 3 x 40 AMP double pole breakers, and the wire gauge required is 3 X 8 AWG. With these parameters, you can be sure that your water heater is properly installed and safe to use.
One of the best things about this tankless water heater is its compact size. It's designed to save valuable storage space, so you can enjoy all the benefits of hot water without sacrificing square footage in your home.
In addition to its practical features, this tankless water heater is also built to last. It's made with high-quality materials and designed to withstand years of use, so you can enjoy hot showers and baths for years to come.
8. Endless Hot Water For 2 Showers
If you're tired of running out of hot water or dealing with a bulky hot water tank, the Airthereal Electric Tankless Water Heater might be just what you need. With its self-modulating temperature technology, this wall-mounted water heater only heats water when you need it, saving you up to 50% on water heating costs compared to a traditional tank water heater. Plus, it takes up 90% less space than a tank water heater, making it perfect for small homes or apartments.
One of the best things about the Airthereal Electric Tankless Water Heater is its ability to provide endless hot water on demand. No more waiting for the tank to heat up or dealing with temperature fluctuations. And with its high-temperature protection, dry heating protection, and electrical leakage protection, you can rest assured that it's safe to use.
It's important to note that the 18kW Electric Tankless Water Heater requires 240 Voltage, 2 x 40 AMP Circuit Breaker Size, and a set of 2 x (8AWG/2) wires for installation. Make sure to check that your breaker panel meets these specifications before purchasing.
Say goodbye to cold showers and hello to endless hot water with the Airthereal Electric Tankless Water Heater. It's a space-saving, energy-efficient, and safe solution for your hot water needs.
9. Rheem 6kw 240v Point Of Use Tankless Electric Water Heater
The product being described is a tankless water heater that offers a reliable source of hot water for residential use. This tankless water heater is designed to be efficient and long-lasting, providing an endless supply of hot water whenever needed.
One of the standout features of this tankless water heater is its push-button ON/OFF control, which makes it easy to operate. Additionally, the LED temperature display allows users to monitor the temperature of the water and adjust it as needed.
This tankless water heater has a 6 kW model flow rate, which can support a flow rate of up to 1.0 GPM. This makes it perfect for use with one or two sinks, providing an ample supply of hot water for everyday use.
The water connections for this tankless water heater are located at the bottom and are 1/2" NPT in size. This makes it easy to connect to existing water lines and ensures a secure and leak-free installation.
One of the benefits of using a tankless water heater is that it provides hot water on demand, which is both consistent and continuous. This means that users can enjoy a reliable source of hot water without having to wait for a tank to heat up.
10. Rinnai Ru199in Condensing Tankless Hot Water Heater, 11 Gpm, Natural Gas, Indoor Installation
Looking for an endless supply of hot water? Look no further than this compact and durable hot water system. With its space-saving design, you can enjoy unlimited hot water flow throughout your home while conserving energy. It only heats water when necessary, making it an energy-efficient choice for your household.
With an impressive hot water flow rate of up to 11 GPM, this system delivers a powerful, constant stream of hot water to meet all your household needs. And thanks to Circ-Logic technology, you can enjoy instant heating and reduced wait times for hot water via scheduled or on-demand recirculation. For optimal water pressure, this system is the perfect choice.
When it comes to durability, this hot water system is guaranteed to last. With a 15-year residential warranty for the heat exchanger, a 5-year warranty for labor, and a 1-year warranty for parts, you can rest assured that your investment will be protected for years to come. And with Wifi monitoring, you can keep an eye on your system from anywhere, ensuring that it always runs smoothly.
While professional installation is recommended, this hot water system is easy to install and can be done yourself with the right tools and knowledge. So why wait? Upgrade your home with this energy-efficient, space-saving, and durable hot water system today!
Best Electric Tankless Hot Water Heater FAQs
Are there any disadvantages to using an electric tankless hot water heater?
While electric tankless hot water heaters offer a number of advantages, there are also some potential disadvantages to consider.
Firstly, electric models may have a higher upfront cost compared to traditional tank-style water heaters. Additionally, they may require a larger electrical circuit and more expensive installation costs, especially in homes that are not already equipped with the necessary electrical infrastructure.
Another potential disadvantage is that electric tankless heaters may not be able to provide enough hot water for larger households or homes with high hot water demand. This can lead to inconsistent water temperature and pressure, particularly during peak usage times.
Finally, electric tankless heaters may require more frequent maintenance and cleaning than traditional water heaters. This is due to the buildup of mineral deposits from hard water, which can cause damage to the heating elements and reduce their lifespan.
Overall, while electric tankless water heaters offer many benefits, it is important to carefully consider these potential drawbacks before making a decision.
Can an electric tankless hot water heater be used for a large household?
Yes, an electric tankless hot water heater can be used for a large household, but it depends on the specific unit's capacity and the household's hot water demands. Electric tankless hot water heaters have a limited flow rate, which means that they can only supply a certain amount of hot water at a time. This can be a limiting factor for large households with high hot water demands.
However, some manufacturers offer electric tankless water heaters with higher flow rates, which can be suitable for larger households. It's essential to consider the unit's size, flow rate, and the household's hot water needs before making a purchase.
Additionally, larger households may require multiple electric tankless hot water heaters to meet their hot water demands. It's crucial to consult with a professional plumber or an HVAC technician to determine the best option for your household's hot water needs.
How do I choose the best brand of electric tankless hot water heater?
Choosing the best brand of electric tankless hot water heater can be a daunting task, but there are several factors to consider that can help simplify the process. Firstly, consider the size of your household and the hot water needs of your family. This will help determine the flow rate and power requirements of the unit you need. Secondly, look for a brand that has a good reputation in the market and has positive customer reviews. You can research online or ask for recommendations from friends and family. Thirdly, consider the warranty and customer service offered by the brand. A good warranty and responsive customer service can save you money and hassle in the long run. Additionally, look for a brand that offers energy-efficient models to save on electricity bills. Lastly, compare prices and features of different brands to find the one that offers the best value for your budget. By considering these factors, you can confidently choose the best brand of electric tankless hot water heater for your home.
How energy-efficient are electric tankless hot water heaters compared to traditional water heaters?
Electric tankless hot water heaters are significantly more energy-efficient than traditional water heaters. Traditional water heaters constantly heat and maintain a large amount of water in a storage tank, which can lead to energy waste and higher utility bills. On the other hand, electric tankless hot water heaters heat water on demand, meaning they only consume energy when hot water is needed. This eliminates the need for a storage tank and reduces standby heat loss, resulting in lower energy consumption and costs.
According to the U.S. Department of Energy, electric tankless hot water heaters can be up to 34% more energy-efficient than traditional water heaters for homes that use 41 gallons or less of hot water daily. However, for homes that use more hot water, the energy savings may be less significant. It's important to note that the upfront cost of an electric tankless hot water heater may be higher than that of a traditional water heater, but the long-term energy savings can make up for the initial investment.
Overall, electric tankless hot water heaters are a great option for homeowners looking to reduce their energy consumption and lower their utility bills.
How long do electric tankless hot water heaters last?
Electric tankless hot water heaters usually last between 10 and 20 years, depending on a few factors such as usage, maintenance, and the quality of the unit. One of the main benefits of electric tankless hot water heaters is that they tend to have a longer lifespan than traditional tank heaters. This is because they don't have a tank to store water, which can cause rust and corrosion over time. Instead, electric tankless heaters heat water on demand, which reduces wear and tear on the unit.
To ensure your electric tankless hot water heater lasts as long as possible, it's important to have it installed by a professional and to perform regular maintenance, such as flushing the unit to remove any mineral buildup. It's also a good idea to choose a high-quality unit from a reputable manufacturer, as this can increase the lifespan of the heater. Overall, with proper installation and maintenance, an electric tankless hot water heater can last for many years and provide reliable hot water on demand.
How much does an electric tankless hot water heater cost?
The cost of an electric tankless hot water heater can vary depending on the brand, model, and size. On average, a basic model can cost anywhere from $200 to $500, while a more advanced, larger capacity model can cost upwards of $1,000 to $1,500. Installation costs may also vary based on the complexity of the installation and the location of the unit. It is important to keep in mind that while electric tankless hot water heaters may have a higher upfront cost, they can save homeowners money in the long run by being more energy efficient and having a longer lifespan than traditional tank water heaters. It is recommended to do research and compare prices and features before making a purchase to ensure that you are getting the best value for your money.
What are the advantages of using an electric tankless hot water heater?
An electric tankless hot water heater offers several advantages over traditional tank-based water heaters. One of the primary benefits is energy efficiency. Tankless heaters only heat water when it is needed, whereas tank-based heaters continually heat and store water, even when it is not being used. This means that tankless heaters use less energy and can help homeowners save money on their utility bills.
Another advantage of electric tankless hot water heaters is their space-saving design. Traditional water heaters can be quite large and take up a lot of space in a home, but tankless heaters are much smaller and can be mounted on a wall, freeing up valuable floor space.
Electric tankless heaters also offer a continuous supply of hot water, as they can heat water on demand and do not rely on a tank to store hot water. This can be particularly beneficial for households with high hot water demand.
Finally, electric tankless hot water heaters have a longer lifespan compared to traditional water heaters, which can last for up to 20 years or more. While the initial cost of a tankless heater may be higher, the long-term savings and benefits make it a worthwhile investment.
What are the top-rated electric tankless hot water heaters on the market?
There are several electric tankless hot water heaters on the market that are highly rated by both consumers and experts. One of the top-rated models is the Stiebel Eltron Tempra Plus, which is known for its reliability and energy efficiency. It has a sleek design and a digital temperature display, making it easy to use and monitor. Another popular option is the EcoSmart ECO 11, which is compact and ideal for small to medium-sized homes. It has a self-modulating technology that adjusts the energy usage based on the hot water demand, leading to significant savings in electricity bills. The Rheem RTEX-13 is also highly rated for its durability and performance, and it can provide hot water for up to two bathrooms. It has a user-friendly digital display and a compact design that makes it easy to install. Other notable models include the Bosch Tronic 3000 T, the Titan SCR2 N-120, and the Atmor AT-D18TP-AZ. Ultimately, the best electric tankless hot water heater will depend on your specific needs and budget.
What features should I look for when shopping for an electric tankless hot water heater?
When shopping for an electric tankless hot water heater, there are several features you should consider to ensure you get the best unit for your needs. Firstly, consider the size of the unit and its flow rate. The unit's flow rate should be able to provide enough hot water for your household's needs. Secondly, consider the temperature rise of the unit. This is the difference between the incoming water temperature and the desired output temperature. A higher temperature rise is suitable for colder climates. Thirdly, consider the energy efficiency of the unit. Choose a unit with a high energy factor (EF) rating to save on energy costs. Fourthly, consider the durability and reliability of the unit. Look for a unit with a sturdy construction and a long warranty period. Lastly, consider the installation requirements and the unit's compatibility with your electrical system. Ensure the unit is easy to install and compatible with your electrical system to avoid additional installation costs.
What size electric tankless hot water heater is best for my household?
The size of the electric tankless hot water heater you need for your household depends on several factors, including the size of your home, the number of bathrooms, and the number of people living in your household. Generally, a smaller tankless water heater with a flow rate of 3-5 gallons per minute is suitable for a single bathroom and a household with 1-2 people. For larger households with multiple bathrooms, you may need a larger unit with a flow rate of 7-10 gallons per minute to meet your hot water demands. It is essential to consider the temperature rise in your area and the incoming water temperature to select the right size unit. Consulting with a professional plumber or electrician can help you determine the appropriate size and type of electric tankless water heater for your household's specific needs.
