Best 120-110V plug in Tankless Water Heaters: Electric, Instant & On Demand

Is your regular water heater incapable of tending to all your water heating needs?

Well, sometimes, even the most high-quality tankless water heaters may not be the best ones for you if they’re not capable of fulfilling your specific requirements. This is one of the problems that customers demanding high-speed water face with water heaters designed for large-scale water consumption. So what do we suggest for them, you ask, and we answer. A 110-volt tankless water heater!

Smaller sized 110V tankless water heaters are perfect for homes that have limited water usage. A 110-volt water heater can give you quick and cheap access to hot water whenever you need it.

In fact, it makes sure the water lasts hot for longer and saves you not only time but energy too! However, you can’t trust all the brands in the market, making this claim.

So here, we have reviewed some of the best tankless 110V water heaters to help you get the best product for yourself.

5 Best 110v Tankless Water Heaters

1. Bosch ES4 Tronic 3000 T – Best Electric

  • Weight: 15.5 pounds.
  • Wattage: 1440 watts.
  • Dimensions: 13.75 x 10.75 x 13.75 inches.
Bosch Electric Mini-Tank Water Heater

At the top of the list of top-rated tankless 110-volt water heaters is none other than the Bosch Electric Mini-Tank Water Heater. This heater offers you all the features you require from a small-scale water heater, especially quick service that you may not find in the relatively bigger designs. Waking up to cold water on those chilly mornings is no more a problem as you can get an immediate supply of hot water with this new machine.

Although this machine is much smaller than its competing brands, this does not mean it has any less effort put into its making. This heater’s design ensures quick heating of the water in use, and long-lasting warmth of the water used afterwards. This is because of its CFC free insulation foam that helps preserve maximum energy and prevents heat from escaping easily.

One of the advantages of its small size is that it can easily adjust in all spaces. The preferable use of these heaters is for sinks, so you can mount this lightweight machine on a wall or even place it on a shelf nearby. With its minimal and stylish design, adding this device to your washroom aesthetics or kitchen will only enhance your place’s look.

Besides using this device for sinks, this machine can also help add assistance to the other water heaters in the house. It can help increase your regular water heaters; you can connect this device to get a hot water supply for showering as well, so now, along with the best water heater for sinks, it can also be considered as one the best water heaters for showers.

When it comes to quality, its efficient performance is sure to give you the results but is it long-lasting? Well, this question can be addressed using a long time warranty that comes with this device. Giving a total of 6 years warranty, this product is sure to give you lasting convenience. Apart from the device itself, 2 years warranty also exists to repair parts adding to the customer’s convenience.


  • Easy installation in small spaces.
  • Retains its temperature for long.
  • Perfect for sinks and showers.
  • 6 years warranty ensures durability.


  • Suitable for limited water use.
  • Some customers complain about leaks.

For customers looking for a small and easy to install device that can work sufficiently for small amounts of water, this is the device for you. Its minimal design makes it a lovely addition to your house, and its long time warranty makes you carefree regarding its maintenance and repairs for a significant time. Moreover, the CFC insulation ensures you have a hot water supply for a significant time even when the device is off.

Video Credits: Kendall Giles

2. Ecosmart POU 3.5 – Best Point of Use

  • Weight: 4 pounds.
  • Wattage: 3500 watts.
  • Dimensions: 3 x 11 x 6 inches.
Ecosmart Point of Use Electric Tankless Water

Ecosmart is a well reputable brand, and hence its products have always been appearing among some of the top-rated products. Therefore, this Point of Use Electric Tankless Water Heater being second in this list is no surprise. This machine works efficiently at 120 volts, making this one of the best among the tankless 110 volts and the 120 volts heaters.

Due to its small and compact size, there’s no issue with its installation or set up. No matter how small your home is, this machine can easily fit in your area of requirement. Similarly, the heater is made of stainless steel, ensuring that the constant water splashing can not leave any lasting stains on the device. This makes it ideal for sinks in the washrooms at an office or hotel or even your home kitchens.

Another important feature regarding its design is that it has repair parts easily available in the market. Unlike many similar brands with their custom-made elements, the eco star offers the convenience of easy to find and nominal price components. This makes it a practical choice in comparison to similar products in the market.

Coming to its actual performance, it is perfect for small scale water supplies. Giving only 1 gallon each time, it is sure to give you immediate access to hot water every single time. At the same time, the digital temperature display helps you view and control the water heating process. Even when the pressure is not the best, this water heater works sufficiently to fulfil your hot water needs whenever needed and in minimum time.


  • Stainless steel body prevents staining.
  • Energy efficiency is 99.8%.
  • Easy to find repair parts.
  • Works even with low pressure.


  • Short term warranty.
  • Only for one point use.

This water heater is a fighter machine! It can resist water stains, work with variable water pressure, and above all, needs no effort for finding its specific repair parts. This device is perfect for those looking to save time and money from regular repairing of the device with such easy maintenance. Similarly, its compact design makes it much easier to fit into small spaces.

3. Stiebel Eltron SHC 2.5 – Best for Hot Water

  • Weight: 15.9 pounds.
  • Wattage: 1300 watts.
  • Dimensions: 11 x 10.63 x 18.69 inches.
Stiebel Eltron Mini-Tank Electric Water Heater

When a quick supply of hot water is what you are looking for, the Stiebel Eltron Mini-Tank Electric Water Heater is the best option for you. With this electric water heater, you get almost an instant supply of hot water without any delays. This makes it perfect for washroom sinks in hotels and restaurants, where compromise isn’t an option.

What’s amazing about this water heater is its practical design. It comes with a flat surface at the back that makes sure you don’t waste any extra space. Similarly, no extra wiring or additional equipment is needed when setting up the machine. This makes the entire installation process much easier for the user requiring no professional help or guidance.

What adds to the convenience is that this water heater is available in three different sizes. So you can opt for whichever size fits your particular set of requirements. Each of these sizes can function at 110 and 120 volts making it easier to adjust to any power supply fluctuations.

For those of you who are very particular about the perfect water heating range, this machine comes with a control knob at the top. So you can easily select the range of temperature you find the most suitable for yourself. Moreover, advanced microprocessors ensure that the temperature does not deviate from its setting. Hence you can enjoy the water neither too hot nor too cold but just the way you like it!


  • Efficient temperature adjustment.
  • Available in three sizes.
  • Operates on 110-120 volts.


  • Material is not stainless.
  • Some customers experience quality-control issues.

Apart from its convenient design and easy installation, this water heater is amazing for heat adjustment. It can efficiently function on both 110 and 120v of power supply, and the 6-year warranty card ensures that any technical issue that may arise wouldn’t be a problem for its customers.

4. Bosch US3 – 120v plug in

  • Weight: 5 pounds.
  • Wattage: 3200 watts.
  • Dimensions: 12.25 x 3 x 6.5 inches.
Bosch Electric Tankless Water Heater

Performing at an efficiency rate of up to 98%, this electric tankless water heater is one of the favourites for customers worldwide. Not only does it give you a quick supply of hot water due to its point of use technology, but due to its chlorofluorocarbon lining, it makes sure to keep the water hot for a long duration. Therefore you do not need to turn on the heater now and then.

Since the heater only operates at the time of demand, you can save so much on your utility bills! No more electricity wastage from constant water heating when you don’t even need it! Similarly, it’s not like you’ll get boiling water every time you open the tap. In fact, the water will be only as hot as you require it to be. This is because of the high-quality copper components that make it easy for you to adjust your temperature according to your convenience.

Now, most small-sized tankless heaters are only limited to specific spaces; however, this is a multipurpose device. Therefore, you can install it in numerous spaces, whether in your bathroom, kitchen, or even on your patio. As long as you have an adequate power supply, you can get your water heater to work perfectly fine wherever you want.

To make this process easier, the heater comes with a step by step detailed instructions manual. Following these steps, you can even set up your device yourself without any extra assistance from a professional. This is not only convenient but helps you save money from the instalment fees as well.

And above all the most important feature of this device is that it’s beautiful! No need to install it in some corner or hide it away behind the doors or below the sinks. With its sleek and stylish design, you can enhance your room’s decor without even making any extra effort. This heater’s lightweight construction makes it easy to hook it up on any wall without worrying about it looking all bulky and weird.


  • Energy-efficient device.
  • Compact design ensures easy installation.
  • Instant supply of hot water.
  • It helps save money from bills.


  • Accumulation of mineral deposits possible.
    The water’s flow rate is slow.

This water heater does not only have the looks, but it exhibits remarkable performance as well. Having an efficiency rate much higher than similar products can give you instant hot water at lower energy consumption. So while purchasing this machine, you get a suitable looking appliance, showing high-quality performance and that too at outstanding rates!

5. American Standard CE-20-AS – 20 gallon tank

  • Weight: 73.6 pounds.
  • Wattage: 1500 watts.
  • Dimensions: 18.5 x 18.5 x 24.88 inches.
American Standard Point Of Use Electric Water Heater

Last but not least is the American Standard Point Of Use Electric Water Heater with its high end, premium quality specifications. What makes this machine good enough to make it among some of the best products on the list is its Dura-Glass lining inside the tank. This saves the tank from suffering the corrosion’s effects that may otherwise arise with regular use and time.

Moreover, it comes with a non-CFC foam that helps give insulation to the machine. As a result, the hot water remains hot for a longer period of time than those that do not have some insulation material. To make sure the water heats up in minimum duration, the heater consists of an immersion heater element. This heats the water more quickly in comparison to other heating techniques.

The heater consists of multiple valves to help you control your water heating process with ease. The thermostat lets you choose the desired temperature without giving you boiling water every time. Similarly, other temperature and pressure relief valves have also been integrated into the system. For easy removal of water, a drain valve is present at the bottom of the machine.

Furthermore, to ensure the safety of this machine, it comes with an energy cut off system. This water heater comes with a commercial and residential warranty for up to 3 years along with such high-quality performance. This clearly shows that the company is confident about its product’s quality and durability.


  • Comes with Energy cutoff system.
  • Drain valve for easy drainage.
  • Easy and accurate temperature adjustment.
  • Dura glass lining prevents corrosion.


  • Problems regarding quality control.
  • Needs professional help for installation.

This water heater comes with an advanced set of features that allow easy temperature and pressure adjustment. Similarly, the drain valve helps remove water without any difficulty. The energy cutoff system of this machine helps prevent the machine from overheating, which ensures safe use.


What brand of tankless water heater is the most reliable?

When it comes to electric tankless water heaters, the Stiebel Eltron water heaters are some of the most reliable products on the market.

How many volts does a tankless water heater use?

Usually, tankless water heaters require 120 volts for efficient performance; however, for some, 110 volts of electricity supply is sufficient for their function.

Is an electric water heater 110 or 220?

The electric water heaters installed for the whole house’s use usually require 220 volts, whereas the ones needed for one or two sinks and faucets need only 110volts.


Tankless water heaters that work using 110 volts may not be the ideal water heaters for the entire home. But for those looking for a convenient supply of hot water in their kitchen sink or bathroom faucets, this machine is perfect. To narrow it down to some of the best products, here are our top three picks.

If you want to invest in a compact water heater covering small-scale water consumption, there is no need to spend crazy amounts of money on large water heaters. Take a look at the products we have mentioned, and we guarantee you will find the perfect product for yourself. So what are you waiting for!? Order now, and whether it’s day or night, enjoy an instant supply of hot water every time you open the tap!

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