Best Electric Tankless Water Heaters in 2021

With the advancement in technology, hot water is now provided at a more efficient rate than it used to and it is all thanks to tankless water heaters. They are much more efficient than the water heaters with big tanks and that requires so much more energy to operate. Thus, we have made an elaborate list of the best tankless water heaters for you to consider choosing.


List of Best Electric Tankless Water Heaters in 2021


10. Rinkmo Electric Tankless Water Heater 

Rinkmo Electric Tankless Water Heater 

  Get it now on Amazon.com

The first heater on our list that we will talk about is the Rinkmo Electric Tankless Water Heater. The following heater is a nicely designed heater that is compact and efficient. The best feature of it is the ability for you to use hot water in an instant because this machine does not need any preheating. Moreover, you can use this one heater for the entire house. It can work with most of your appliances. The special technology that is featured in this heater is of the latest kind, which ensures your safety. This technology leaves no mineral buildup after long and frequent use. Therefore, you will not need to spend money on maintenance.

Most importantly, this new technology enables you to reduce costs on water heating up to 60 percent, which makes it highly energy efficient. Likewise, temperature sensors are installed in the heater to detect the rise and fall of the water’s temperature. When it overheats the heater shuts off the circuit to ensure safety. Thus, you can now use this heater without worrying about your safety. 

Take-Home into Consideration 

  • No mineral buildup 
  • Do not have to preheat 
  • Energy efficient 

A Little to Perfection 

  • It requires 2 electric feeds 

9. Tankless Water Heater Electric Ecotouch ECO9OB

Tankless Water Heater Electric Ecotouch ECO9OB

  Get it now on Amazon.com

Up next on our list of best tankless water heaters is the Tankless Water Heater Electric Ecotouch ECO9OB. The following model of a heater has a convenient sleek design. Moreover, it has all the functions of a modern electric water heater that would leave you satisfied. The temperature is adjustable from 67o F to 106o F. Therefore, you will have a nice range of cold to hot water. Most importantly, the sensors in the heater stabilize the temperature so that there would not be any fluctuations.

A great point to look at in this heater is the microcomputer control that is installed in the machine. In addition, there will not be a need to wait for the water to heat up as you can adjust to your wanting temperature and get the hot water right away. Likewise, the heater is specially designed to prevent any leaking, corrosion, and scale build-up. These dangerous build-ups that some heaters create are very hazardous. However, with this particular heater, you can shower without any fear.  Furthermore, it has a smart modulating control. 

Take-Home into Consideration 

  • No scale build-up 
  • Has a microcomputer control
  • Energy efficient 

A Little to Perfection 

  • Might not work well in colder climates 

8. Ecosmart ECO 36 Electric Tankless Water Heater 

Ecosmart ECO 36 Electric Tankless Water Heater 

  Get it now on Amazon.com

Moving on to our next entry on the list, which is the Ecosmart ECO 36 Electric Tankless Water Heater. It has a smart and compact design that would look wonderful with any type of house design. On top of its sleek design, you will find that this heater is efficient and has many great functions. Moreover, it has a small digital temperature display that would show you the current output of water temperature.

Furthermore, it has self-modulating technology that helps you run hot water for the entire home while using different home appliances simultaneously. Most importantly, this smart design uses the best quality materials of copper and stainless steel that would improve the appliance’s longevity. In addition, as for any modern model of electric water heaters, this one has great energy efficiency that would save you all the costs for heating up water. 

Take-Home into Consideration 

  • It has a compact design 
  • Has a digital temperature display 
  • Equipped with self-modulating technology 

A Little to Perfection 

  • Needs a larger output to supply a continuous hot shower 

7. Stiebel Eltron Electric Tankless Water Heater 

Stiebel Eltron Electric Tankless Water Heater 

  Get it now on Amazon.com

The list continues with another best electric water heaters which is the Stiebel Eltron Tankless Water Heater. This beautifully designed white appliance is engineered and made in Germany. The sleek design is compatible with all interior designs. Moreover, it is highly functional and can provide you with continuous hot water flow. Most importantly, it is equipped with modern technology that effectively maintains water temperature. However, when the capacity is exceeded it would slowly decrease the output. This will ensure that you could use the hot water without worrying about your safety and the safety of the house. In addition, there is no need for special vents to be installed. The design is small and sleek that it would integrate with the wall when mounted.

The greatest part of this design of a water heater is that it has a silent operation, which is the greatest perk. Finally, it is manufactured with the consideration of saving energy, which is also shown on the display when you use the heater. 

Take-Home into Consideration 

  • Can maintain water temperature efficiently 
  • Has a small and sleek design 
  • Has silent operation 

A Little to Perfection 

  • Has a limitation on providing hot water to different appliances simultaneously  

6. Stiebel Eltron Electric Tankless Water Heater 

Stiebel Eltron Electric Tankless Water Heater 

  Get it now on Amazon.com

Our next best water heater is another tankless heater from Stiebel Eltron. This particular model is an upgraded electric heater from the previous model. The best quality of this electric heater is, of course, the silent operation. Usually, water heater machines operate with a lot of noise, especially when it is heating up the water. However, this model will not annoy you with frequent motor running noises. Moreover, this water heater is made of premium quality materials. Its heating chamber is made entirely out of copper, which will not rust easily.

In addition, it also has a beautiful design as the previous model. It is sleek and white, which would fit in into any home design, plus, it does not require any vents. Furthermore, you can easily pre-set the desired temperature on the beautiful digital display of the water heater. Most importantly, this particular model has maximum energy efficiency. 

Take-Home into Consideration 

  • It has silent operation 
  • It has a maximum energy efficiency 
  • Has an easy-to-read digital display 

A Little to Perfection 

  • You might face minor difficulties when installing the water heater 

5. EcoSmart ECO 27

EcoSmart ECO 27

  Get it now on Amazon.com

We are also impressed by this  EcoSmart ECO 27 Electric Tankless Water Heater. It is a small and beautifully designed water heater that is 17 inches wide, 17 inches long and is 3.62 inches in diameter. It is the most convenient smaller option for a water heater. Moreover, it has a greatly functioning digital temperature control. The best part of this electric heater is that it is made of high-quality copper and stainless steel. These materials ensure the durability and longevity of the appliance. You will be able to use it for many years to come.

In addition, it has an efficient rate of saving energy as it only heats up the water when it passes the unit. Also, the new self-modulating technology also enhances the machine’s ability to save even more energy. Finally, this electric water heater provides from 2.7 to 6.5 gallons of water in a minute at the desired temperature. 

Take-Home into Consideration 

  • Has a digital temperature control
  • Made from copper and stainless steel 
  • It is efficient and durable 

A Little to Perfection 

  • It needs annual maintenance work 

4. Bosch Mini Water Heater 

Bosch Mini Water Heater 

  Get it now on Amazon.com

Up next on our list is the Electric Mini-Tank Water Heater manufactured by Bosch. The following model of a water heater is a compact design that can fit in seamlessly into any home design. It is 17.5 inches wide, 17.5 inches long, and is 14.5 inches in diameter. Therefore, it could be mounted almost anywhere. As a plus, you would have three different options to mount the following appliance. Most importantly, this water heater has a great temperature range from 65oF to 145o F. In addition, it has 150 PSI of operating pressure.

Unlike the other water heaters, this one is relatively easier to install. Furthermore, this mini-tank water heater can supply up to 7 gallons of water. This is a convenient way to heat up your water and save energy efficiently. 

Take-Home into Consideration 

  • Can supply up to 7 gallons of water 
  • Easily installed 
  • Energy efficient 

A Little to Perfection 

  • Might have trouble to provide continuous hot water after long use 

3. Rheem RTEX-18 

Rheem RTEX-18 

  Get it now on Amazon.com

Coming at number 3 on our list of best electric water heaters is the Rheem RTEX-18 Electric Tankless Water Heater. The following model of a water heater has a classic design and a thermostatic control that has an LED display of the temperature in use. Most importantly, the advanced self-modulation system of this heater automatically adjusts the water temperature when it is overheated. Therefore, you can safely use this heater without worrying that it would burn your circuit when it overheats. In addition, it is made with durable copper immersion, which ensures that the machine will not rust or has mineral build-up over time.

Furthermore, this water heater does not have a problem with providing continuous hot water over a long period of time. Now, you can have your long hot showers without any temperature fluctuations. 

Take-Home into Consideration 

  • Accurate LED display 
  • Self-modulation technology 
  • Simple installation 

A Little to Perfection 

  • Needs 100 amps or more of electric service to operate 

2. Bosch Electric Mini-Tank Water Heater ES4 

Bosch Electric Mini-Tank Water Heater ES4 

  Get it now on Amazon.com

The runner up is the  best electric heater on the list is the Bosch Electric Mini-Tank Water Heater ES4. The following model has many advantageous qualities that would leave you fully satisfied with the product. This is a slightly smaller mini-tank heater that would conveniently fit into smaller spaces. The dimensions of this heater are as follows: 13.75 inches wide, 13.75 inches long, and is 13.5 inches in diameter. Moreover, it is relatively easy to maintain this heater and is energy efficient. Likewise, the following model is easily mounted on the wall or under the sink.

It only requires a 120-volt outlet to sufficiently run the machine. Therefore, you can skip the expensive hardwiring of this appliance and use hot water on demand the instant you plug in the cord. Because the dimensions of this heater are quite small, the water supply only comes at 4 gallons. However, this is the most efficient way to get your hot water without many troubles. 

Take-Home into Consideration 

  • Easy to maintain 
  • Simple installation 
  • Fits into smaller spaces 

A Little to Perfection 

  • Might have minor leakages after a long period of use 

1. EcoSmart 11 Electric 

EcoSmart 11 Electric 

  Get it now on Amazon.com

Finally, the number one spot on our list goes to the EcoSmart 11 Electric Tankless Water Heater. This particular model of a water heater is efficiently designed to fit into different home designs. On top of that, you can find that this heater is very effective at providing continuous hot water on demand. It provides about 1.3 to 3.1 gallons of water in a minute. Moreover, it is also equipped with self-modulating technology that ensures no sudden fluctuation in temperature.

Furthermore, this water heater supplies you with hot water at an instant when the water gets to the unit. Therefore, you do not need to wait for the water to heat up to get your hot shower. In addition, it has a digital display that shows an accurate temperature of the water that you could adjust to your liking at any time. 

Take-Home into Consideration 

  • Self-modulating technology 
  • Energy efficient 
  • Provides 1.3 to 3.1 gallons of water in a minute 

A Little to Perfection 

  • Might not work as well in colder climates 

Buying Guide To Choosing Best Electric Tankless Water Heaters in 2021 

Now let us turn you to the buying guide and identify the specific qualities that you would want to have in a great electric water heater. 

Size

First of all, it is important to get a heater that would be proportionate to your demands. Smaller heaters are easier to hide, if you do not like for the box to be seen, however, a larger size heater might supply you with a larger amount of hot water. 

Efficiency

Second of all, the efficiency at which the electric water heater works is an important quality that needs your attention. Heaters require a lot of electric output to effectively supply you with hot water, which is not eco friendly. Therefore, it is smarter to look for a more advanced model of a heater that could save you the cost of electricity. 


Conclusion 

So far, we have looked at the top 10 best electric tankless water heaters in detail. Thus, we believe that along with the buying guide you will be able to choose the best model. 

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