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Best 120V Electric Tankless Water Heater (2024 Update)

If you're looking for an efficient and cost-effective way to heat your water, a 120v electric tankless water heater might be the right choice for you. These units are designed to provide on-demand hot water without the need for a bulky storage tank, making them a popular option for homeowners and businesses alike.

Before making a purchase, there are several factors you should consider to ensure you get the best 120v electric tankless water heater for your needs. First, think about the size of the unit. You'll want to choose a model with enough power to meet your hot water demands, but not so much that you're paying for energy you don't need. Additionally, consider the flow rate, temperature settings, and ease of installation to ensure a hassle-free experience.

If you're still unsure whether a 120v electric tankless water heater is right for you, consider these questions: Do you want to save money on your energy bills? Are you tired of running out of hot water during peak usage times? Do you want a more compact and space-saving solution for heating your water? If you answered yes to any of these questions, a 120v electric tankless water heater might be the perfect solution for your needs.

10 Best 120V Electric Tankless Water Heater

# Product Image Product Name Product Notes Check Price
1
The product is ideal for providing hot water on demand in homes, apartments, and commercial buildings.
2
This product is ideal for providing instant hot water to a single sink in a point-of-use setting.
3
Ideal for providing instant hot water in homes, kitchens and indoor spaces with a constant temperature setting and remote control.
4
The product is ideal for providing instant and constant hot water with remote control and digital display.
5
It is ideal for providing hot water directly at the point of use, such as a sink or shower.
6
Ideal for providing hot water instantly with constant temperature control at home, kitchen or RV.
7
This electric tankless water heater is ideal for providing hot water at a specific location in the home or office.
8
The product is ideal for providing instant hot water under the sink using self-modulating technology.
9
Ideal for providing hot water in small spaces such as bathrooms, kitchens, and hand-washing stations.
10
The product is ideal for providing hot water in small spaces or as a supplement to existing heating systems.
The product is ideal for providing hot water on demand in homes, apartments, and commercial buildings.
This product is ideal for providing instant hot water to a single sink in a point-of-use setting.
Ideal for providing instant hot water in homes, kitchens and indoor spaces with a constant temperature setting and remote control.
The product is ideal for providing instant and constant hot water with remote control and digital display.
It is ideal for providing hot water directly at the point of use, such as a sink or shower.
Ideal for providing hot water instantly with constant temperature control at home, kitchen or RV.
This electric tankless water heater is ideal for providing hot water at a specific location in the home or office.
The product is ideal for providing instant hot water under the sink using self-modulating technology.
Ideal for providing hot water in small spaces such as bathrooms, kitchens, and hand-washing stations.
The product is ideal for providing hot water in small spaces or as a supplement to existing heating systems.

1. Eemax Eem24027 Electric Tankless Water Heater, Blue

Looking for an efficient and space-saving solution for your hot water needs? Look no further than this tankless water heater. With its continuous supply of hot water, you'll never run out in the middle of a shower or washing dishes. And because it only heats the water you need, when you need it, you'll save money on your energy bills compared to traditional tank-style water heaters.

To install this tankless water heater, you'll need 3 x 40 AMP double pole breakers and 3 X 8 AWG wire gauge. But once it's up and running, you'll appreciate its compact size that saves valuable storage space in your home.

Say goodbye to cold showers and hello to endless hot water with this reliable and efficient tankless water heater.

2. Atmor Tankless Water Heater: Hot Sink Anywhere!

This product is an excellent choice for individuals seeking a low flow, single sink water heater suitable for moderate to warm climates with inlet cold water temperatures above 57 degrees. To ensure optimal heating performance, the unit requires a minimum flow rate of 0.5 GPM, which results in a temperature rise of 45 degrees.

It is important to note that the unit requires a dedicated 30A single phase breaker, 10 AWG wire (line, ground, neutral), and a 110V service. As such, it is not a plug-in unit and will require professional installation.

In addition to the unit itself, this product comes equipped with a 0.5 GPM aerator for the sink faucet and a pressure relief device (PRD). These accessories are designed to enhance the performance and safety of the water heater.

3. Mini Tankless Water Heater With Remote Control

Introducing the Instant Hot Water Heater – an innovative and practical solution to your hot water needs. With its powerful 5500W heating system, this electric tankless water heater ensures instant hot water supply without preheating. In just 3 seconds, you can enjoy consistent, endless hot water with a maximum temperature of up to 55℃/131℉, providing you with the perfect experience of comfort and relaxation.

The Instant Hot Water Heater is designed with both remote control and touch screen features, making it ultra-convenient to use. You can easily adjust the temperature through either method, avoiding the need to touch the unit with wet hands, ensuring safety. Additionally, the constant temperature water outlet has three-level power adjustment, allowing you to bid farewell to cold and hot water fluctuations.

This tankless Hot Water Heater has a compact and slim design, allowing you to save valuable floor space within your home. With a size comparable to a small suitcase and its wall-mount design, it is perfect for kitchens, bathrooms, and under sinks. Moreover, this heater is 99% thermal energy efficient, meaning it only heats water when called upon, unlike a tank heater that maintains water temperature even when not being used.

Installing the Instant Hot Water Heater is a breeze. It has a mini body and a standard 1/2 interface (inflow or outflow) that can be directly connected to household conventional hose connectors. However, due to its high power consumption (rated current is about 30 amp), it is not equipped with a plug that is compatible with the maximum load of a general home plug socket (which only provides 16amp or 3000W). Therefore, it is necessary to use a control line that is greater than or equal to 30 amp contacts as the main gate to ensure safety and provide sufficient power.

With its high-temperature protection, dry heating protection, and electrical leakage protection, the Instant Hot Water Heater is safe to use. It ensures you have safe, on-demand hot water to use on your schedule. The electric and fluid systems are completely separated to prevent electric leakage and water pipe corrosion.

4. Remote-Controlled Electric Water Heater For Instant Hot Water

Introducing the Instant Hot Water Heater – the perfect companion for sinks, providing instant, consistent, and endless hot water in a matter of 3 seconds without the need for preheating. With a maximum temperature reaching up to 55℃/131℉, this electric tankless water heater is equipped with a powerful 5500W heating system that ensures you get hot water on demand.

Designed with an ultra-slim and smooth appearance, this heater boasts of an elegant and beautiful look that will complement any modern decor. With the option of remote control or touch screen, adjusting the temperature has never been easier. The constant temperature water outlet also comes with a three-level power adjustment, ensuring you bid farewell to cold and hot water fluctuations.

The tankless design of this hot water heater means it's only the size of a small suitcase, freeing up valuable floor space in your home. It's also 99% thermal energy efficient, as it only heats water when called upon, unlike traditional tank heaters that maintain water temperature even when not in use. This translates to significant energy savings and lower utility bills.

Installation of the home water heater is a breeze, thanks to its mini body and standard 1/2 interface (inflow or outflow), which can be directly connected to conventional household hose connectors.

Safety is of utmost importance with this hot water heater. It comes equipped with high-temperature protection, dry heating protection, and electrical leakage protection, ensuring you get safe, on-demand hot water whenever you need it. The electric and fluid systems are also completely separated, preventing electric leakage and water pipe corrosion, giving you peace of mind as you use it.

5. Ecosmart Pou 3.5 Point Of Use Electric Tankless Water Heater, 3.5kw@120-Volt, 6 X 11 X 3 Inch

Looking for a compact and efficient hot water solution for your single sink? Look no further than the POU 3.5 Electric Tankless Water Heater. This powerful and reliable unit is designed to provide hot water for a single sink at a flow rate of 0.5 gallons per minute in warmer climates.

To ensure peak performance, the POU 3.5 requires a 30 amp breaker and 10 AWG wire for installation. In colder climates, the POU 6 is recommended for a single sink at 0.5 GPM. With an amperage draw of 29 amps and a 3.5 kW power output, this tankless water heater is both powerful and energy-efficient.

The POU 3.5 features 1/2" NPT connection fittings for easy installation and a maximum temperature rise of 47.8°F at 0.5 GPM, 23.9°F at 1 GPM, and 15.9°F at 1.5 GPM. This means you can enjoy hot water whenever you need it, without wasting energy or water.

6. Ecotech Electric Tankless Water Heater.

Introducing the instant hot water heater, a sleek and compact solution to your hot water needs. This innovative product is designed to provide 24/7 hot and warm water, without the need for a storage tank. With a heating system of 5.5KW, it can provide hot water at a temperature range of 30-55℃ (86°F- 131°F) that can be set through the touch control panel and digital temperature display.

This tankless water heater is lightweight and measures 8.8"W×8.2"H×3"D, which makes it easy to install anywhere close to an outlet, horizontally, vertically, or obliquely. It requires a 63A Circuit Breaker and 1/2"NPT water connections. The outlet water temperature is dependent on the inlet water temperature and water flow. The larger the water flow, the lower the temperature, the smaller the water flow, the higher the temperature.

The instant hot water heater is self-modulating, which means it automatically adjusts the power based on the change of inlet water flow and temperature. This feature ensures optimal energy efficiency of 98%, which translates to considerable electric charge savings.

To start the heating process, simply open the tap with an activation flow rate of 0.5GPM, and the unit will do the rest. The instant hot water heater is perfect for various settings such as kitchens, bars, schools, hospitals, communities, and hair salons.

Lastly, it is important to note that the trip switch should be ≥63A; otherwise, it will trip. The applicable water pressure range is from 0.04-1.2Mpa. With this instant hot water heater, you can enjoy hot water anytime, anywhere, with no standby energy consumption or need to wait for the tank to fill up.

7. Ecosmart Pou 6 Point Of Use Electric Tankless Water Heater, 6 Kw,white,1/20, 1/40, 1/95

Looking for an efficient and reliable water heater for your sink? Look no further than this powerful and compact electric tankless water heater. With the ability to provide hot water at a rate of 0.5 gallons per minute, this unit is perfect for use in warmer climates where water temperature is not a concern.

When it comes to installation, this water heater is designed to be hard-wired and requires a 30 amp breaker and 10 AWG wire for proper operation. For colder climates, we recommend upgrading to the POU 6 model to ensure optimal performance.

It is important to note that this water heater is intended for use with a single sink only and should not be used with a shower or multiple fixtures. Additionally, it operates at 220 volts and should not be installed using a plug.

Investing in this electric tankless water heater means you'll enjoy the convenience of hot water whenever you need it, without the need for a bulky and space-consuming traditional water heater. Plus, with its compact design and easy installation, you'll be able to enjoy hot water in no time at all. So why wait? Invest in this reliable and efficient water heater today and start enjoying hot water on demand!

8. Instant Heat Under Sink: Camplux 6kw Heater

The instant water heater is an energy-saving and efficient solution to provide hot water right where you need it. With its consistent hot water output, it heats water only when needed, saving up to 50% energy consumption. The temperature rise of 1.0 GPM is 50°F, and it can easily provide hot water between 85°F – 131°F in just two seconds.

One of the most significant advantages of this electric tankless water heater is its compact size and space-saving design. It requires a connection of a 30A circuit breaker and 12AWG min wire size, which enables it to fit under your bathroom or kitchen sink. You can easily hardwire it close to an outlet for energy saving. It is essential to make sure that the product dimensions of 10.9" x 7.08" x 2.5" and water pipes fitting of 1/2" NPT male are the right size for you. It has a power rating of 6kW at 240V.

The intelligent touch control system makes it easy to set the temperature, display real-time water temperature and inlet water flow, and enjoy instant and endless hot water. The quality of the product is top-notch, with a 304 food-grade stainless steel water tube design that prevents scaling, even when using hard water. It is also equipped with safety features like anti-leakage, waterproof, over-heating protection, dry combustion protection, and troubleshooting self-test.

The after-sales service of this product is exceptional. It comes with a 3-year tech support, 1-year warranty for parts, and round-the-clock customer service. It is essential to keep in mind that this 240-volt mini water heater must be hard-wired and cannot be plugged in. It must be permanently connected to a fixed circuit breaker and installed vertically. It is also crucial to note that this under sink hot water heater is only suitable for sink use and not for bathing.

9. Mini Electric Water Heater – Hot Instantly!

The product boasts an extremely compact design that not only saves space but also adds a touch of elegance to any setting. Its sleek and modern design is sure to catch the eye and can be mounted in plain sight without disrupting the overall aesthetic.

One of the best features of this product is its minimum flow to activate unit. At 0.21 GPM (0.8 l/min), the unit is internally restricted to 0.32 GPM, making it highly energy efficient. This translates to significant energy savings, which is great for both your wallet and the environment.

The manufacturer is so confident in the quality of this product that it comes with an impressive warranty. You can enjoy peace of mind knowing that it is backed by a 7-year warranty against leakage and a 3-year warranty against defects in workmanship and materials.

10. Ecosmart Eco Mini 2.5 2.5-Gallon 120v Electric Mini Tank Water Heater

The ECOSMART tankless water heater is a top-of-the-line appliance that is designed with both style and functionality in mind. Its sleek and compact design makes it a great addition to any modern home, while its digital output temperature display ensures that users can easily monitor and adjust the temperature of their hot water supply.

This tankless water heater is not only stylish but also highly efficient, boasting an impressive 99.8-percent energy efficiency rating. It is manufactured in the United States, ensuring that it meets the highest quality standards and is built to last.

With a capacity of up to 2.6 gallons of water, this tankless water heater is perfect for supplying hot water to a single point-of-use, such as a sink or shower. Its easy installation process requires only an appliance line cord included plug, and it does not require any venting, which means it can be installed directly at the point-of-use.

The ECOSMART tankless water heater is powered by 12 A, making it a reliable and efficient appliance that can provide users with a steady supply of hot water whenever they need it. Its compact and stylish design, combined with its impressive energy efficiency and easy installation process, make it an ideal choice for any homeowner looking for a top-of-the-line tankless water heater.

Best 120V Electric Tankless Water Heater FAQs

How easy are 120v electric tankless water heaters to install?

The installation process for 120v electric tankless water heaters can vary depending on the specific model and the location in which it will be installed. However, generally speaking, these units are relatively easy to install and can be completed by a homeowner with basic plumbing and electrical knowledge.

One of the benefits of electric tankless water heaters is that they do not require venting, as there is no combustion involved in the heating process. This means that the installation process can be simpler and less expensive compared to gas tankless water heaters.

To install a 120v electric tankless water heater, you will need to have access to an electrical panel with an available circuit for the unit. Additionally, you will need to have access to the water supply and be able to disconnect and remove any existing water heater. It is also recommended to consult the manufacturer's installation instructions and local building codes to ensure proper installation.

Overall, while there may be some variations in the installation process, 120v electric tankless water heaters are generally considered to be easy to install.

How many gallons per minute can a 120v electric tankless water heater provide?

The gallons per minute (GPM) flow rate of a 120v electric tankless water heater depends on various factors such as the unit's power output, the incoming water temperature, and the desired hot water temperature. However, in general, a 120v electric tankless water heater can provide a flow rate of around 0.5 to 2 GPM.

It's important to note that a low flow rate may be sufficient for certain applications, such as a single sink or shower. But for larger households or commercial applications, a higher flow rate may be necessary, which may require a higher voltage or multiple units to be installed.

It's always recommended to consult with a licensed plumber or electrician to properly size and install a tankless water heater to ensure it meets the specific needs and requirements of your property.

How much does a high-quality 120v electric tankless water heater typically cost?

The cost of a high-quality 120v electric tankless water heater can vary depending on the brand, model, and features. On average, you can expect to pay anywhere from $250 to $800 for a 120v electric tankless water heater. Some of the factors that can affect the price include the flow rate, energy efficiency, and the number of applications it can serve. In addition, the cost of installation, which can vary based on the complexity of the project, should also be taken into consideration. While a higher-priced unit may offer more features and better performance, it's important to consider your specific needs and budget when choosing a tankless water heater. It's always a good idea to do your research and compare different models and prices before making a final decision.

How much energy can I expect to save by using a 120v electric tankless water heater?

The amount of energy savings you can expect by using a 120v electric tankless water heater can vary depending on several factors. First and foremost, it is important to note that 120v electric tankless water heaters are typically designed for point-of-use applications and have a lower flow rate compared to higher voltage models.

That being said, some estimates suggest that switching to a 120v electric tankless water heater can result in energy savings of 10% to 20% compared to traditional tank-style water heaters. This is because tankless water heaters only heat water as it is needed, whereas tank-style heaters constantly heat and store water even when it is not being used.

Other factors that can impact energy savings include the size and efficiency of the tankless water heater, the temperature of the incoming water, and the usage habits of the household. It is also important to note that while energy savings can be significant, the upfront cost of a tankless water heater may be higher than a traditional tank-style heater.

How much space do I need to install a 120v electric tankless water heater?

The space required to install a 120v electric tankless water heater varies depending on the specific model and manufacturer. Generally, these units are designed to be compact and take up minimal space. However, it is important to note that there are minimum clearance requirements that must be followed to ensure proper ventilation and safe operation. These requirements will be detailed in the installation manual that comes with the unit.

In addition to clearance requirements, the installation location should also have easy access to the electrical panel and plumbing connections. It is recommended to consult with a licensed electrician and plumber to determine the exact space and placement requirements for your specific model and installation location. This will ensure that the unit is installed safely and efficiently, and that you can enjoy the benefits of on-demand hot water.

What are the top-rated 120v electric tankless water heaters on the market?

There are several top-rated 120v electric tankless water heaters available on the market. One of the most popular options is the EcoSmart ECO 11 Electric Tankless Water Heater, which offers energy-efficient performance and can provide hot water on demand for small to medium-sized homes. Another highly-rated option is the Stiebel Eltron Tempra 12 Plus Electric Tankless Water Heater, which features advanced flow control technology and is designed to provide constant hot water to multiple outlets simultaneously.

Other top-rated 120v electric tankless water heaters include the Bosch Tronic 3000 T Electric Mini-Tank Water Heater, which is compact and easy to install, and the Rheem RTEX-04 Electric Tankless Water Heater, which offers precise temperature control and can be used for both residential and commercial applications. Overall, when choosing a 120v electric tankless water heater, it's important to consider factors such as the unit's size, energy efficiency, flow rate, and overall performance to ensure that you select the best option for your home or business.

What is the average lifespan of a 120v electric tankless water heater?

The lifespan of a 120v electric tankless water heater can vary depending on several factors, such as usage, maintenance, and quality of the unit. However, on average, a well-maintained electric tankless water heater can last up to 20 years or more. This means that with proper care, you can enjoy hot water on demand without worrying about replacing your unit for a long time. Regular maintenance, such as flushing the unit every six months, can help extend the lifespan of your tankless water heater. It's also essential to choose a high-quality unit from a reputable manufacturer to ensure that the product is durable and long-lasting. In summary, the average lifespan of a 120v electric tankless water heater is around 20 years, but proper maintenance and quality of the unit can significantly impact its lifespan.

What is the maximum temperature output of a 120v electric tankless water heater?

The maximum temperature output of a 120v electric tankless water heater can vary depending on the specific model and brand. However, in general, most 120v electric tankless water heaters have a maximum temperature output of around 120-140 degrees Fahrenheit. This temperature range is typically sufficient for most household needs, including showering, washing dishes, and doing laundry. It is important to note that some models may have adjustable temperature settings, allowing for customization to meet individual preferences. Additionally, it is important to ensure that the water heater is properly installed and sized for the specific needs of the household to ensure optimal performance and efficiency.

What is the warranty on a typical 120v electric tankless water heater?

The warranty on a typical 120v electric tankless water heater can vary depending on the manufacturer and the model. However, most electric tankless water heaters come with a warranty of around 5 years for the heating element and 1-2 years for other components. Some manufacturers offer extended warranties for an additional fee.

It's important to carefully read and understand the warranty terms and conditions before purchasing a tankless water heater. Some warranties may only cover certain parts or may have limitations on repairs or replacements. It's also a good idea to research the manufacturer's reputation for honoring warranties and providing good customer service.

Regular maintenance and proper installation can also help prolong the life of a tankless water heater and ensure that it operates efficiently. Be sure to follow the manufacturer's recommended maintenance schedule and have the unit installed by a licensed professional.

What safety features should I look for in a 120v electric tankless water heater?

When looking for a 120v electric tankless water heater, there are several safety features to consider. Firstly, ensure that the unit has a reliable overheat protection system that automatically shuts off the heater if it reaches unsafe temperatures. Secondly, the heater should have a pressure relief valve to release excess pressure and prevent the tank from rupturing. Thirdly, check if the unit has a built-in flow sensor that can detect low water pressure and automatically shut off the heater to prevent damage. Fourthly, make sure that the heater has a ground fault circuit interrupter (GFCI), which prevents electrical shocks and short circuits by immediately cutting off the power supply if it detects a ground fault. Lastly, consider getting a heater with a digital display that shows the current temperature and any error codes to help you troubleshoot potential issues. It is important to carefully read the product specifications and reviews to ensure that the chosen heater meets all the necessary safety standards.