The 10 Best Electric Tankless Water Heater Reviews of 2021

Tankless Water Heater

Electric tankless water heaters are the most reliable and affordable gadgets you will ever have in your household. Electric tankless water heaters save you lots of money since they are energy-efficient yet you will have an unlimited supply of hot water in your household. The best thing about tankless water heaters is that some sizes suit all kinds of users.

The size of your household does not matter since you will find the right size of a tankless water heater for you. You are in the right place if you are looking for an excellent electric tankless water heater.

Below is a guide to the best electric tankless water heaters in the market.

The 10 Best Electric Tankless Water Heaters:

1. Rinkmo Electric Tankless Water Heater

Anyone who would want to save on cost needs to purchase a Rinkmo Electric Tankless water heater. With this unit, you receive instant hot water from the tap. Once you run water through the pipe, it passes through the heat exchanger where the coil heats it to the desired temperature. In return, you avoid water wastage, save on energy, and cost. Electric tankless water heaters are also easy to install. They are also easy to maintain since mineral build-ups are minimal. This saves a lot in maintenance costs.

Rinkmo comes with digital modulating technology which enables you to adjust the temperature to your liking. With this unit, you will not experience sudden temperature changes when the water heater is already working. The flow and temperature sensors alert you in case of any hitches in the unit. Rinkmo Electric Tankless Water Heater comes in a compact size which saves you space. It can even be mounted on the wall. The best thing about the size is that it can fit in any available space.  This unit is also easy to install and operate. This makes Rinkmo most suitable for starters.


Pros
  • Instant and continuous hot water

  • Saves cost

  • Saves space

  • Easy to install

  • Easy to operate

  • Stable temperatures

  • Comes with smart modulating technology

  • You will never experience sudden changes in temperatures

Cons
  • Pricy

2. Stiebel Eltron Electric Tankless Water Heaterr

Stiebel Eltron is an electric tankless water heater that features an advanced patented technology that helps in automatically maintaining the water temperature. This gives you comfort when using the unit since you will not experience changes in temperature at any time.  The advanced flow technology helps in reducing the water flow when the demand for hot water exceeds the capacity it can hold. Your hot showers will therefore never be interrupted.

Another great thing about Stiebel is that it is energy efficient. You save 15 -20 % of energy which saves a lot on cost too. Also, this tankless water heater does not need venting. They heat water on demand which helps in preventing energy wastage. Stiebel electric tankless water heater comes in a compact size that is light and easy to install.  You can also easily mount it on the wall or use it on small available spaces.


Pros
  • Comes in a compact design

  • Easy to install

  • Constant flow of hot water

  • Light in weight

  • Energy efficient

  • Features an advanced flow technology

  • Does not need venting

Cons
  • The plastic turbine in the flow sensor tends to wear out very often

3. Rheem RTEX Tankless Electric Water Heater

Rheem RTEX is the most efficient self-modulating tankless water heater you will ever come across.  You will receive at least 3.17 gallons of hot water constantly thus will never experience cold water on the faucets or the showers. With a Rheem unit, you do not have to preheat water. You receive hot water on your tap instantly. This saves about 26 % of energy costs. This unit also comes with thermostatic digital technology which has perfect temperature settings.  It features a single dial control that enables you to adjust the temperature to your liking. The digital interface makes it user friendly.

Rheem RTEX comes in a small compact size which saves on space. The unit can fit in most small spaces. You can even mount it on the wall. Also, it is easy to install and operate.


Pros
  • Convenient

  • Easy to install

  • Easy to operate

  • Unlimited supply of hot water

  • Comes with thermostatic digital control

  • Saves on energy

Cons
  • Mineral build-ups in the pipes are likely to occur every often so you may need to clean it up every month

4. EcoSmart ECO 11 Electric Tankless Water Heater

You can be sure to receive endless hot water on your faucet once you invest in EcoSmart 11 Electric Tankless Water Heater. The water gets heated as it passes through the pipes so you do not have to preheat water like with traditional water heaters. Also, the unit comes in a compact sleek design which saves you space. You can install EcoSmart in small spaces like in the bathroom and kitchen. If the available space is little, you can also mount it on the wall. You will never have to worry about space when you have an EcoSmart.

EcoSmart ECO 11 Electric Tankless Water Heater saves time.  You will not have to preheat water. Once you open the tap, you receive hot water instantly. The unit also saves on cost since the unit is energy efficient. You will also save water since you do not have to leave the tap running for the water to become hot.  It is easy to install and operate.


Pros
  • Saves space

  • Easy to install and operate

  • Saves on cost

  • Energy efficient

  • Saves time

  • Features a compact and sleek design

Cons
  • May is not suitable for use in areas extremely hard water

5. BISELONG Electric Tankless Water Heater

BISELONG electric tankless water heater comes with a high power heating system for you to receive continuous and instant hot water. The unit has a water flow regulating valve which automatically reduces the water flow when the hot water demand is more than the capacity. At no time will you receive cold water on your faucet or shower when using the BISELONG electric tankless water heater.

This unit also saves energy and space. It comes with an aesthetic mirror design which makes it appealing thus can be installed in any room. Also, the size saves on space thus can be installed in small spaces in the household. Another great thing about this unit is that it comes with 9 temperature settings. You only need to make adjustments until you achieve your desired temperature. The unit is also easy to operate and safe. Water passes through the electronic flow sensor then the heating system separates the electricity and water thus reliable and safe. The unit also comes with a digital display and automatic temperature settings. This makes it easy to operate.


Pros
  • The continuous flow of hot water

  • Comes with a high power heating system

  • It has a water flow regulating valve

  • Saves space

  • Energy efficient

  • Easy to operate

  • Easy to install

  • It auto stops when water is not getting heated

  • Comes with a digital display

Cons
  • Some people would prefer it if the unit had a remote control

6. Bosch Electric Mini – Tankless Water Heater

If you are looking for convenience and reliability when heating water, then Bosch Electric Mini Tankless Water heater is the unit for you. You will never have to worry about hot water when using Bosch. It is made from high-quality materials thus serve you for a long period without breaking down. 

The unit is also easy to install and use. It comes with a digital display where you can monitor the water temperature when using the tankless water heater. This unit also has a quick recovery rate.  You save a lot on time since you do not have to wait for the water to preheat before it becomes hot.  You receive hot water on your shower or faucet instantly.


Pros
  • A constant supply of hot water

  • Suitable for use in small spaces

  • High quality

  • Easy to install and use

  • Has a fast recovery rate

  • Easy to mount on walls

Cons
  • The 6 years warranty only applies if the heater was installed by authorized dealers

  • The warranty also applies only if you replace the heating anode annually

7. ECOTOUCH Electric Tankless Water Heater

ECOTOUCH is an electric tankless water heater that provides you with sufficient endless hot water for your household. You will not have to preheat water. It gets heated as it passes through the pipes into the tap. This makes it the most efficient electric tankless water heater for your kitchen sinks and on the faucets. Also, this unit comes with a self-modulating smart technology that adjusts the water temperature depending on the flow rate and desired temperature. At no time will you experience cold showers or scalding from too much heat.

Also, ECOTOUCH saves water and energy since the heating time is little and there is no heat loss unlike when using traditional water heaters. The unit also comes with an upgraded heat element. The water pipes are separated by an aluminum material thus ensures your safety when using the tankless water heater and prevent corrosion of the pipes. Being corrosion-free prevents leakages thus the tankless water heater lasts longer.

ECOTOUCH is the safest and most durable electric tankless water heater you will ever come across. It comes with multiple safety devices which are all meant to ensure your safety. The unit also comes with a digital display that has a touch control panel which gives you an easy time when it comes to temperature adjustments. Last but not least, the tankless water heater comes in a sleek and compact design which allows you to mount it or install it in any available space.


Pros
  • Comes with multiple safety devices

  • Instant unlimited supply of hot water

  • No heat loss

  • Comes with self-modulating  smart technology

  • The water pipe and electricity lines are on separate lines thus safe

  • Convenient

Cons
  • Does not have a knock out on its back to run power thus you can only wire it from the side

8. Camplux Electric Tankless Water Heater

Camplux is an electric tankless water heater that comes in a smart design. It has a digital display which you operate by touching. You will be able to control the temperature easily through the smart controller which you can control even from a distance. Also, it comes with a sleek and compact design which saves a lot of space since it fits in most small spaces. The tankless water heater can fit in the bathroom, under the sink, and also in cabins.

Another great thing about Camplux electric water heater is that it is reliable. It comes with multiple protection features. The unit has a protection device that prevents overheating and water leakages. You will receive lead-free water which is safe for consumption. The body of this unit is made from stainless steel which is rust free and lasts long. You will use Camplux for a long time without needing to replace it.

With Camplux electric water heater, you only need 0.85 GPM water flow for you to receive hot water on the faucet or the shower. You will not need to waste a lot of water waiting for the water to get hot. The best thing is that you will receive consistent instant hot water on your faucet. Most people go for Camplux electric water heater because of the compact design and the multi-angled mounting feature. This means that the unit can fit in the available small spaces such as under the kitchen sink, in hair salons, and also in hospitals.


Pros
  • Instant consistent hot water

  • Easy to install

  • Comes with different safety features

  • Digital display and a smart controller

  • Compact design

  • The outer body is made from a stainless steel body thus durable

  • Requires minimum activation flow to heat water

Cons
  • Not suitable for hot water-heavy users

9. Atmor Digital Tankless Electric Water Heater

Anyone looking for an efficient, reliable,e and durable electric tankless water heater should go for Atmor Digital. It is a water heater that is suitable for use in most small households whose hot water usage is low. You can be sure to have a continuous supply of hot water as long as you are using Atmor Digital.

The tankless water heater comes with a self-modulating technology which helps in the regulation of the amount of energy needed when heating water. This makes the water heater energy efficient since it saves up to 50 %of energy. With this unit, you will also receive instant hot water on the faucet without having to wait for the water to run for minutes before it gets hot. This saves water too since no water is wasted. You only heat the water that you need thus no wastage.

Atmor Digital Electric tankless water heater is easy to operate. It has a digital panel which you use to control the temperature. The unit also comes in a compact design that saves a lot of space. This unit does not need any venting thus can be fixed in corners or mounted on the wall on the available space. This explains why most people living in small spaces prefer it over other tankless water heaters.


Pros
  • Perfect for use in warm areas

  • Comes with advanced digital modulating technology

  • Compact size thus saves space

  • Instant continuous supply of hot water

  • Energy efficient

  • Saves water

  • Has a high-quality heat exchanger

  • Interior is made from stainless steel thus durable

Cons
  • Electricity consumption is quite high

10. Eemax EEM24018 Electric Tankless Water Heater

Eemax is the most efficient electric tankless water heater you will ever come across. It provides you with an instant and an unlimited supply of hot water when you need it. It saves a lot on energy since you only heat the water you need unlike when using the traditional water heaters.

This unit has a self-modulating technology that allows you to make temperature adjustments depending on the required amount of hot water. Also, this unit comes in a compact and stylish size which fits in most spaces,s especially in small households. It fits in most modern households since the stylish design fits most décors.


Pros
  • Unlimited supply of hot water

  • Comes in a compact and stylish design

  • Energy efficient

  • Comes with advanced self-modulating technology

Cons
  • Sensitive to flow rate

How do Electric Tankless Water Heaters Work?

Electric tankless water heaters have become popular over time. This is because of the efficiency and reliability they come with. The electric tankless water heaters are energy efficient and have a great ability in delivering hot water on demand. 

With a tankless water heater, you do not have to heat water in storage tanks for later use. They deliver unlimited hot water which enables you to serve every area of your household efficiently. Once you turn a tap on, the water on the pipe runs through the heat exchanger.

Water is then heated by the electric coil to your desired temperature. As long as your area does not experience power outages every often, electric tankless water heaters will serve you for a long time efficiently.


Final Thought

Electric tankless water heaters are the most efficient and energy-efficient units you will ever come across. The units also come in compact sizes which saves space. You can install them in any available space. You can also mount them on the wall.

Another great thing about electric tankless water heaters is that it does not vent which helps in reduction of installation cost.