page title icon 10 BEST ELECTRIC TANKLESS WATER HEATER 2021 | Reviews and buying guide

Introduction

Have you been searching for the best electric tankless water heater but still cannot find which is the best one for yourself? Don’t worry and leave this headache to us, as we shall provide you with a list of some best-selling electric tankless water heaters available in the market. Not only has this but we shall provide you with in-depth details of these top electric tankless water heaters in this extensive review. So just be seated and get ready to pick the best electric heater that will perfectly fit your requirements.

But before going through the review of these electric tankless water heater everyone should have adequate knowledge of some basics of an electric tankless water heater. So an electric water heater offers an instant supply of hot water at the point of use or in the whole house depending on its capacity. Water passes through heat exchangers of the water heater when a hot water tap is turned on. The electric coils of these heat exchangers heat water to the temperature level that has been set up by the user.

Electric tankless water heaters are better than other tankless water heaters as they are highly efficient. The best electric tankless water heaters provide an efficiency of up to 99%. There are minimum losses of energy and you get the best of what you pay for. They are also smaller in size and less in weight than any other type of water heater. As a result, they can be placed anywhere indoors as well as outdoor.

Due to the electric circuitry, they do not weigh much and are portable. The list of advantages of an electric tankless water heater just goes on. So let’s not make it lengthy and just dig into the details of the best electric tankless water heaters available in the market.

Given below is the extensive review of the best electric tankless water heater, all their pros and cons that would help you make the right choice for yourself. Read the given below details to get your hands off the best electric tankless water heater.

BEST ELECTRIC TANKLESS WATER HEATER

We have compiled a list of 10 Best Electric Tankless Water Heater for you after massive test and comparisons which are available in the market.

Image Product Details   Price
backpac Stiebel Eltron Tempra Brand: Stiebel Eltron
Model: Tempra Plus 36KW
Weight: 19 Pounds
Voltage: 240 Volts
Amperage: 300A
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backpac EcoSmart ECO 11 Brand: EcoSmart
Model: ECO 11
Weight: 6.5 Pounds
Voltage: 220 Volts
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backpac EcoSmart ECO 27 Brand: EcoSmart
Model: ECO 27
Weight: 13.75 Pounds
Amperage: 112.5
Voltage: 240Volts
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backpac Rheem RTEX-18 Brand: Rheem
Model: RTEX-18
Weight: 14.8 Pounds
Voltage: 240 Volts
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backpac Titan Electric Brand: Titan
Model: N-120
Weight: 7.93 Pounds
Voltage: 220 Volts
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backpac ECOTOUCH Brand: ECOTOUCH
Model: ECO90
Weight: 10.93 Pound
Voltage: 240 Volts
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backpac Bosch Electric Mini-Tank Brand: Bosch
Model: Tronic 3000 T
Weight: 17.3 Pounds
Voltage: 120V
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backpac Rheem 240V Brand: Rheem
Model: RTEX-13
Weight: 14 Pounds
Voltage: 240 Volts
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backpac Sio Green IR288 Brand: Sio Green
Model: IR288 POU
Weight: 10.21 Pounds
Voltage: 240Volts
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backpac Eemax EEM24027 Brand: Eemax
Model: EEM24027
Weight: 13.75 Pounds
Voltage: 240V
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1. Stiebel Eltron Tempra

  • Works Quietly and Efficiently
  • No Venting Required
  • Saves a lot with self-modulating Technology
  • Light Weight
  • 7 years Leakage and 3 Years Parts Warranty
  • Little bit costly

If you are looking for a water heater that offers maximum efficiency without causing any fuss for you, then Stiebel Eltron Tempra Plus is the best option for you. The model does not only performs only to its maximum potential but also has a groundbreaking sleek design. The sleek finish of the water heater just catches the attraction of sophisticated customers towards itself. This electric tankless water heater has an exceptional Flow rate of 7.03 GPM that is the highest among any of the electric tankless water heaters.

With such a high flow rate this water heater can be used as a water heating system for the whole house. On the other hand, because of its small and handy size, it fits perfectly anywhere even down the sink that means it can also be used as a water heater at the point of use. With an extraordinary efficiency of 99 percent, the top electric tankless water heater leaves all other water heaters behind.

It only provides hot water when required so there is no stand by energy losses. Stiebel Eltron Tempra Plus 36 features the most advanced self-modulating technology. It adjusts power according to the hot water requirements of the user. The feature results in 15 to 20 percent saving on electricity bills. 

With the advanced flow control, there won’t be any fluctuations in the hot water supply. You always get an instant supply of hot water as soon as you turn on the tap. The unit features a digital temperature display, making it more user-friendly. The heat exchangers of the electric water heaters are made of solid copper that increases its durability. All these features rank Stiebel Eltron Tempra Plus 36KW the best electric tankless water heater in our list of top 10 electric tankless water heaters.

Key Features

  • 7.03 GPM Flow Rate
  • Sleek Design
  • No venting required
  • Self-Modulating Technology
  • Digital Temperature Control Display
  • Advanced Flow Control System
  • Strong Copper Heat Exchangers
  • No Noise Production

2. EcoSmart ECO 11

  • Highest Efficiency
  • Very low cost
  • Up to 60 percent saving on water heating cost
  • Extremely Lightweight and Portable
  • Low Flow Rate

As an on-point water heater or electric water heater for small houses and apartments, no electric tankless water heater can defeat EcoSmart 11 Electric Tankless water heater.  With a flow rate of 2.3 GPM, the model is best either as a single water heater for houses with one or two residents or an on-point water heating system for big houses.

The system has a digital temperature control display, with the setting of a 1-degree increment in temperature. The first thing most buyers look at before purchasing an electric water heater is that how much they will save on their electricity bill if they buy a particular water heater. EcoSmart ECO 11 Electric Tankless water heater will save up to 60 percent on water heating cost, showing a very significant cut down in electricity bill. One of the best electric tankless water heater offers a constant hot water supply. It will provide you with an instant supply of hot water the moment you turn on the tap. Moreover, it is very lightweight and portable.

The water heater has been equipped with a patented self-modulating technology, with technology monitors the use of hot water and adjusts the power accordingly. Thus offering the maximum energy saving. Talking about the efficiency of the unit, it has an efficiency of 99.8%. The highest efficient electric tankless water heater than any other best electric tankless water heater.

The quality that attracts most of the customers is that EcoSmart ECO 11 comes with a lifetime warranty. Who doesn’t want such a water heater that lasts long life? Besides that, the water heater is available at such a reasonable price that no one cannot think twice before purchasing it. The unit is available for under 300$.

Key Features

  • Digital Temperature Display
  • Controlled Temperature Regulation
  • Flow rate of 2.3 GPM
  • Small in size 11.5″ x 8″ x 3.75″
  • Patented Self-Modulating Technology
  • Efficiency of 99.8%
  • Temperature Range between 80F to 140F

3. EcoSmart ECO 27

  • Bestseller
  • High Efficiency
  • Lifetime Warranty
  • 50% Saving on Water Heating Cost
  • Flow Rate decreases at low temperature

If you want an electric tankless water heater that will provide you with an endless supply of hot water and you can use it as a single water heating system for the whole house then EcoSmart ECO 27 is the best option. No other brand can defeat EcoSmart in the production of premium electric water heaters. Whenever the top electric tankless water heaters are listed EcoSmart ECO series water heaters always stand on the top.

The biggest issue of instant water heaters is they offer a low flow rate that is not sufficient for houses with higher hot water demand. But your issue has been resolved with EcoSmart ECO 27. The unit has a flow rate of 6.7GPM. The highest flow rate any water heater will ever offer. You will never run out of hot water supply if you have this heating system installed at your home. The water heater has heating components made of high-quality copper and stainless steel that offers maximum resistance to rusting. It can be used in any environment under any severe conditions.

With its uniquely engineered modern design the unit takes very small space and best to be installed indoors. It saves up to 50 percent of water heating costs because of its high efficiency that is 99.8%, thus saving consumers valuable money. The heating system features Digital Temperature Display and a Thermostat for temperature control. The durability of this water heater has made it the best-selling electric tankless water heater.

Key Features

  • LED Temperature Display
  • Thermostatically Control Temperature
  • Stainless Steel and High-Quality Copper Interior
  • Sleek and Compact Design
  • 99.8% Efficiency
  • Brass Top
  • Self-Modulation Technology
  • Features Temperature Sensors
  • 6.7 GPM Flow Rate

4. Rheem RTEX-18

  • Quietest Electric water heater
  • Easy Installation
  • Affordable Price
  • High-Efficiency Rating
  • Sometimes shows an E5 Error

Rheem is a renowned brand that manufactures tankless water heaters and produces some of the best electric tankless water heaters. Rheem RTEX-18 is just an example that depicts all the features that are peculiar to this brand. Rheem RTEX- 18 is the new addition to their series that exhibits all the features of its prior series and has some newly introduced features.

One problem most of the water heaters complain about is the annoying sound they produce. Rheem RTEX-18 is the quietest tankless electric heater you will ever have. With a flow rate of 4.4 GPM, it is perfect for an average-sized home. It gives a very sophisticated look and surely catches the attention of customers towards itself. The water heater is controlled by an external thermostat with a digital temperature display. There is an increment of 1 degree in temperature each time you move the knob in a clockwise direction.

Like any other best electric tankless water heater it also has self-modulation technology that ultimately leads to the increase in efficiency of the product. The system adjusts input power according to the hot water requirement.

Because of its portability, the unit can be installed single handed in a very simple way without much equipment. Moreover, the system includes a warranty that ensures the reliability and durability that you would expect from any popular brand.

Key Features

  • Flow Rate of 4.4 GPM
  • Advanced Self Modulation Technology
  • 2 Copper Heating Components
  • Brass Top for Durability
  • External Thermostat
  • LED Display
  • Lightweight and Portable
  • Sophisticated Design

5. Titan Electric

  • Continuous Supply of Hot Water
  • Long-Lasting
  • Very cheap Price
  • Super Easy Installation
  • Only 30 days Warranty

If you are on a hunt for an electric tankless water heater that will fulfill all the hot water requirements of an average-sized home then there cannot be any better option other than Titan Electric Tankless Water Heater. With a flow rate of 2.3 Gallons per minute, the water heater is perfect to supply hot water to a showerhead and a sink.

The one of top-rated electric tankless water heater has a very decent look and is available in white color. The compact size of the water heater makes it perfect to be installed indoor without any worries of occupying extra space. When mounted on a wall of your bathroom or under your sink you can barely notice it as it adjusts perfectly to the environment. A major cut down in your water heating cost as it is highly efficient and provides hot water only when required.

The user enjoys a non-disruptive, continuous supply of hot water as this electric tankless water heater offers an endless supply of hot water. It also provides hot water without any delay. Mostly when a hot water tap is turned on the cold water in the pipes comes out first before the actual supply of hot water is available. But that’s not the case with Titan electric tankless water heater as hot water is available on the go. The water heater best works when the temperature of incoming water is above 65F.

 It is among the eldest models of electric tankless water heaters but due to its durability it has still maintained its position in the list of best electric tankless water heaters. And that’s not it, it is also among the highest-rated electric tankless water heaters. If you are in search of a tankless water heater that has a long life then you must consider Titan Electric tankless water heater as your primary choice. Its average lifetime is over 15 years that clicks most of the customers. This water heater with so many features is available for under 250$.

Key Features

  • 2.3 GPM Flow Rate
  • Compact Size 4.8 x 9.6 x 12 inches
  • Available in white color
  • Requires 60A Breaker
  • Inlet and outlet vents
  • Easy Installation
  • The average life of 15 years

6. ECOTOUCH 9KW

  • Unique Color and Design
  • Very low in price
  • Passed all safety tests
  • Corrosion-free interior
  • Low Flow Rate for Higher Demand

With extensive experience in the industry of appliances manufacturing ECOTOUCH has introduced an electric tankless water heater that meets all the requirements of the modern-day.  If you are fed up with the problem of continuously running out of hot water while taking a shower and want an up-gradation of water heater then ECOTOUCH is a considerable option.

The unit has a flow rate of up to 1.5 GPM that is equal to one shower head. You get an instant supply of hot water each time you turn on the tap. It provides an endless supply of water and enables the user to enjoy a shower without any fluctuations. With the latest patent heating technology, no preheating is required, every time you get the desired hot water supply without any standby. ECOTOUCH electric tankless water heater has a very distinctive look. The outcast black color makes it unique from other top electric tankless water heaters. The system has a digital temperature control display. The user can set the temperature of output water as desired.

The best electric water heater features advanced self-modulation. The technology automatically sets the input power and temperature of the water heater. When hot water requirement is low it reduces the input power and saves the power consumption cost of the water heating system. It facilitates customers by saving their money in multiple ways like easy installation is needed that saves a lot of bucks. And monthly savings from a reduction in water heating cost.

All the components of the water heater are strictly tested under severe conditions ensuring a safe and worry-free experience. Water and electric pipes are separated to avoid any misshape. The pipes remain corrosion-free for years. You will be atoned to know that all these exceptional features are available under 200$.  That lowest price makes it the best value tankless water heater.

Key Features

  • On-point Electric tankless water heater
  • 1.5 GPM Flow Rate
  • Advanced Self Modulating Technology
  • 99.8% Efficiency
  • Digital Temperature Control Display
  • Compact and Sleek Design
  • Patent Heating Technology
  • Corrosion-free Heat Exchangers
  • Black Color

7. Bosch Electric Mini-Tank

  • Very Small in Size
  • Budget-Friendly price
  • Best Seller
  • Single-Handed Installation
  • Mini-tank for water storage

Sometimes some products do not fall in a specific category by their names but they get a chance to be listed in that category because of their distinctive features. The same is the case with Bosch Electric Mini-Tank Water Heater. Although it’s not a tankless water heater but it has all the qualities to compete with any best electric tankless water heater.

The water heater is the best-selling water heater due to its small size and high efficiency. It is unbeatable when it comes to op-point or specific purpose water heater. Just like any other instant water heater, Tronic 3000 provides an instant supply of hot water the moment the hot water tap is turned on. The electric water heater has an exceptional flow rate of 4 GPM. You will never run out of hot water supply if you have this mini-tank electric water heater installed at your home.

The best feature is the simplest installation of the unit. It does not require any difficult and costly installation. All you need to do is take it out of the box, put it at the desired place, and plug its cord into a switch with the same rated voltage. That’s all. The process saves hundreds of bucks that are generally spent on professional installation done by a plumber or electrician.

This electric water heater contains a relief valve that ensures the safety of the unit as well as the user. The thin-glass lining around the water tank makes it more durable and portable. Competent to any best tankless water heater it also has 98% efficiency. The higher the efficiency, the lower the water heating cost, the happier the customer. Instant and continuous hot water supply at the point of use cannot be provided well than Tronic 3000. Its lowest price makes it the best electric water heater under 200$.

Key Features

  • Tank Capacity of 4 Gallons
  • Premium Glass-lining around Water Tank
  • Efficiency 98%
  • Extremely small size 13.75 W x 13.75 H x 13.5 D Inches
  • Includes Relief Valve
  • Super Easy Installation

8. Rheem 240V

  • Compact Size
  • Very Cheap Price
  • Highest Efficiency
  • Simple and Easy Installation
  • Low Flow Rate Decreases with decrease in groundwater temperature

If you are a perfectionist and demands everything exactly to your requirements then Rheem RTEX-13 is the best available option for you. With a glow rate of 4GPM, it can fulfill the hot water requirements of a small to average sized house. So if you live alone, or with your partner then you must consider purchasing this electric tankless water heater. By purchasing a tankless water heater that with less capacity you not only save the purchase money of the product but also save the monthly power consumption cost of the heating system.

The RTEX-13 model features 2 strong copper heating coils that heat water instantly. You will get a constant supply of hot water without any fluctuations. It also provides a user-friendly interface. The unit has a digital temperature display and an external thermostat for temperature control. With Self Modulation technology there is no fear of extra power consumption that’s been wasted when the heating system is on standby mode. All of these features make Rheem RTEX-13 one of the best electric tankless water heater.

Key Features

  • External Thermostat for Temperature Control
  • Flow Rate up to 4 GPM
  • Digital Temperature Display
  • 2 Copper made Heating Components
  • Self-Modulating Power Control
  • High Efficiency of 99.8%

9. Sio Green IR288

  • Advanced Temperature Control System
  • Space-Saving Compact Design
  • Zero Maintenance Cost
  • Affordable price
  • Non-metallic Heating system
  • Quite Heavy

In a competitive industry, every brand tries to come up with innovative features in their products no other brand is offering. Sio Green IR288 Infrared Electric tankless water heater is a product that is full of such innovative features. First of all the heating system is quite distinctive than the other best electric tankless water heater.

The unit does not exhibit any electrical coils rather than it uses infrared heating technology to heat water. The water is being heated without any direct contact with metal that means no corrosion, no calcium deposits, and not heat losses. The best electric water heater has no metallic heating tubes rather the heating tubes are made of a material called Quartz. Quartz is resistant to corrosion and also recyclable.

With a conventional heating system, plenty of heat is wasted other than heating water that decreases the efficiency of the electric tankless water heater. With the modern infrared heating technology, maximum efficiency is obtained as there are no heat losses.

This electric tankless water heater features Automatic Power technology that adjusts the power and temperature according to the demand for hot water. It also offers manual mode so that the user adjusts the temperature as per his desire. The premium electric tankless heater has a digital temperature display also features a very compact size.

The mini electric tankless water heater is so small in size that it can easily fit inside a cabinet under a sink or any desired place. The installation of the unit is an easy and effortless process, does not need any professional to be hired to do the job for you. The maintenance of this electric tankless water heater costs absolutely nothing. There are no parts that would get rusted or requires frequent maintenance operations. The unit comes with 30 days money-back guarantee. Sio Green IR288 gives the best bang for the money.

Key Features

  • Mini Electric Tankless Water Heater
  • LED Control Display
  • Non-metallic Quartz heating pipes
  • Infrared Heating System
  • Efficiency up to 98%
  • Compact size 17.3 x 11 x 3 inches
  • Advanced Thermostat Technology
  • Automatic Power Technology
  • Features Manual Mode
  • Exhibits Self Cleaning Design

10. Eemax EEM24027

  • Advanced Self Modulating Technology
  • Continuous Hot Water Supply
  • Budget-Friendly
  • Requires 3 sets of 220V

Tired of finding the best electric heater that supports multiple appliances at a time? Then Eemax EEM24027 might be the right choice for you. The electric water heater is capable of fulfilling the hot water requirements of multiple appliances at a time without any fluctuations. The unit provides its user with a constant supply of hot water without heating up and causing any fuss.

The feature that distinguishes the water heater from other electric water heaters is its compact size and sleek design. This electric tankless water heater is different in color than many conventional water heating units. Equipped with self-modulating technology the unit relieves its user with a significant decline in water heating cost. Best for people who keeps a check and balance of their bill cost.

Key Features

  • Advanced Self Modulation
  • Electric Tankless Water Heater
  • Compact Size
  • Extremely Easy Installation
  • External Thermostat
  • Digital Temperature Display
  • Stainless Steel Body



Ultimate Buyer’s Guide to Buy Best Electric Tankless Water Heater:

After reading the details of some of the best tankless water heaters you might have selected the one electric water heater that fulfills all your requirements. But before taking a final decision you must consider some factors to get the most of what you spent.

Price

The most important factor is the price of the water heater. You cannot find the best electric water heater until or unless you have a clear idea of the budget in your mind. So first of all set up a budget and then look for products that fall into that budget range. The best electric tankless water heater is the one that will give you the best value for your money.

Flow Rate (GPM)

The capacity of a tankless water heater to heat water is determined by its flow rate. Higher the flow rate more the number of appliances the tankless water heater will be able to provide hot water with. For a person looking for a top electric tankless water heater, the best is the one that fulfills your requirements not necessarily the one that has a maximum flow rate.

Power Input (BTU)

Power input is the amount of energy that is required to warm up the water. Selecting the right tankless water heater is important as it is going to affect your water eating cost a lot. Must look for an electric tankless water heater that has self-modulating technology so that power consumption is right according to the requirement at a particular time.

Voltage Rating

Once you have selected an electric tankless water heater must look at the voltage rating. Make sure that the supply voltage is equal to the rated voltage. The voltage also affects the power consumption of the water heater.

Size A feature that must not be neglected is the size of the water heater. You should search for a water heater that will fit just right in the available size. If it does not fir in the available space then what is the use of such a water heater.

FAQs

Are Electric tankless water heaters more efficient?

Yes, Electric tankless water heaters are more efficient as there are fewer energy losses as compared to other water heaters.

How do I Know that which electric tankless water heater is better?

The best electric tankless water heater is the one that fulfills your requirements. So first make clear what do you exactly want?

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