Top 6 Best Electric Tankless Water Heaters – Reviews and Buying Guide

Nowadays, electric tankless water heaters have become very popular among households. You can find so many electric tankless water heater reviews online but none of them will help you actually make a decision. That is why we are going to assist you on choosing the best electric tankless water heater for you!

There are many different brands and models offered on the market today, which makes your decision much more difficult. How do you know which brand to trust? What kind of a heater would be right for your household?

Which is the best electric tankless water heater for you depends on your preferences as well as on the size of your household and the number of people who live in it.

Best Electric Tankless Water Heater Reviews

Best Electric Tankless Water Heaters

A few factors which you should consider when choosing an electric tankless water heater are size, heating capabilities, energy saving efficiency and quality depends on the brand name behind the product and can be verified through customers reviews. What should majorly influence your decision is the size of your household and whether a certain heater can meet those needs.

More about these factors can be read in the buyer’s guide below.  We have covered all those aspects that need to be looked when buying in our electric water heater reviews

Comparison Table of Electric Tankless Water Heater Reviews

NameGPMHighlights 
EcoSmart ECO 112Hands down the best Tankless Water Heater available in the market.

  • Endless Hot Water
  • Save Money, Save Space, Save Energy
  • Save up to 50% in water heating costs

Rheem RTE 9
3
  • Continuous hot water on demand
  • Ideal for point-of-use applications
  • Compact design fits almost anywhere

Stiebel Eltron Tempra 24 Plus
8
  • TOP Rated Electric Tankless Water Heater for Whole House

SioGreen IR260
1.5Infrared Tankless Water Heater
  • No Calcium and limestone deposit
  • Ideal for hard water areas, well water
  • Saves Water and energy

BOSCH Tronic 3000
  • Reliable Point of Use Heater
  • 98% efficient, Saves Energy and Money
  • Great for Small Spaces
  • space saving, ultra-compact, and lightweight heater

Eccotemp L5
1.4
  • Perfect for residential use (i.e. small apartment units)

Without further ado, let’s get into our list of Top 6 Electric Tankless Water Heaters

EcoSmart ECO 11 – Best Electric Tankless Water Heater

The first on our list of the best electric tankless water heaters is the EcoSmart ECO 11 heater. Being one of the most advanced examples of this technology on the market, this EcoSmart model can meet the full house requirements easily.EcoSmart ECO 11 Electric Tankless Water Heater

Compared with other electric tankless water heater models, the EcoSmart ECO 11 has a very sleek design, convenient for placing it anywhere you desire. It does not take up much space which is perfect for smaller kitchens or bathrooms. With its digital temperature control panel, you will be able to control the heating throughout the whole process.

This is an on-demand electric water heater heats up to two gallons of water per minute, while it passes through it without being retained in any kind of storage unit. That means you can have hot water ready whenever you turn the tap on.

EcoSmart ECO 11 will save you up to 60% of your average water heating costs thanks to it’s advanced technology which uses energy only when necessary. This tankless water heater model can provide hot water for one sink and one shower at the same time, enough for a one bathroom household.

In order to get the best out of this appliance, the set up must meet some requirements such as a minimum 125 amp electricity panel with a 60 amp double pole breaker which has to be connected to a set of #6 awg wire.

A minor downside it that there are no LED light indicators on this model, but they can be found on the model below in our list, the Rheem RTE 9.

All together, EcoSmart ECO 11 is a great choice for an average household. It comes with a lifetime warranty so any possible malfunctions will be covered. When compared to some models on the market, ECO 11 comes for an affordable price for the quality it delivers.

Pros
  • Efficient energy saver
  • Heats up 2 gallons per minute
  • Compatible size
  • Digital Temperature Control
  • Cover one sink and one shower at the same time
Cons
  • No LED indicator lights
  • Possible malfunctions

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Rheem RTE 9 – Best Rated Electric Tankless Water Heater

The Rheem RTE 9 Electric Tankless water heater model is one of the best models out there because of it’s ability to provide hot water within 15 to 20 seconds. There is no doubt this tankless water heater model will suit the needs of an average family with no more than one bathroom.

Rheem RTE 9 Electric Tankless Water Heater

What makes this model stand out on the market is the LED light indicator which tells you whether the appliance is active or in standby mode. The great thing is that it does not use energy at all when in standby mode, saving you much more money than certain models out there. The on-unit temperature control panel will help you keep track of the heating process.

Rheem RTE 9 is one of the best tankless electric water heater model that heats up to three gallon of water per minute (3 GPM), which is a bit less than the previous model we mentioned. However, that is quite enough to cover one sink and one shower at the same time.

The Rheem RTE 9 model gives you hot water on demand and won’t let you down when it comes to the energy saving efficiency. Its compatible size allows easy placement anywhere you find it convenient. The heating system works fairly quickly, providing you with hot water after 15 to 20 seconds of running the tap.

Limitation this model is the heating capacity of one gallon per minute, making it not suitable for households with more than one bathroom. Compared to the previous model we mentioned, the EcoSmart ECO 11 which has a lifetime, RTE 9 has a limited warranty.

The warranty which comes with this appliance lasts one year for the parts and 10 years for the heat exchange. However, the warranty is offered only if the appliance was installed by a professional, licensed technician.

Overall, the Rheem RTE 9 model is convenient for smaller households of no more than four people. If set up properly, meeting the electricity requirements of having a 40 amp pole breaker, the appliance should not have any issues running. If any malfunctions occur, the warranty will cover it as long as it’s still available for you.

Pros
  • LED light indicators
  • On-unit temperature
  • Quick heating
  • Energy saver
  • Compatible size
Cons
  • Not a lifetime warranty
  • Less heating capacity

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Stiebel Eltron Tempra 24 Plus – Best whole house electric tankless water heater

Tempra 24 plus is one of the best electric hot water heater out there in the market. With the proven reliability, this model is one of the most talked about models on the market. Some customers praise it for convenience and large capabilities while others have had issues after a few years of usage. There are definitely more positive than negative reviews for this model.

Stiebel Eltron Tempra 24 Plus Electric Tankless Whole House Water Heater

The Stiebel Eltron Tempra 24 Plus model will heat your water in no time without needing venting of any kind. The high-end technology is proven to be successful in saving energy as this tankless water heater mode will save up to 20% of your electricity bill. The sleek design lets you store it anywhere you find convenient, from the bathroom to basement.

The Tempra 24 Plus has larger water heating capabilities compared to the Rheem RTE 9 model and thus it is a whole house electric tankless water heater. It can provide hot water for two showers at the same time, whereas, some customers have been running it on two showers and a sink at the same time. This model is able to deliver enough hot water for more units at one time, considering that one of them will have reduced pressure.

The digital temperature control lets you easily track and control the heating process. To get the best out of this model and to lessen the chances of malfunction, it is required for the heater to be set up with a 100 amp breaker pole. Any possible malfunctions will be covered by the warranty.

Malfunction has been reported after 2-3 years of using this model. All the malfunctions are easily fixed under the warranty. The Tempra 24 Plus offers a three-year warranty only if set up by a licensed technician.

In conclusion, the Stiebel Eltron Tempra 24 Plus will serve it’s purpose efficiently, even providing more capacity for more than one sink and one shower at a time. The limited warranty may be a downside but if your water composition state is checked, you should not experience any major issues. Customers are overall satisfied with this water heater model.

Pros
  • Reliable
  • Efficient energy saving
  • No venting required
  • Digital temperature control
  • Sleek Design
Cons
  • Limited Warranty
  • Malfunctions due to water composition

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SioGreen IR260 – Infrared Electric tankless hot water heater

We have come to what may be the most convenient electric tankless water heater model thus far, the SioGreen IR260. This model gained a lot of positive reviews and comments from previous customers due to its advanced technology that cannot be found in other models on the market.

SioGreen IR260 Point Of Use Infrared Electric Hot Tankless Water Heater

This heater model requires completely no maintenance at all, making it one of the easiest to use and most convenient house appliances of all time.

The manufacturer guarantees no corrosion or any kind of residue will be left inside the heater due to its great water flowability and the coil-less technology. This heater is able to provide enough hot water for two showers and a sink at one time.

What enables this model to run so smoothly is the coil-less technology and the quartz infrared technology. These two combined heat water without having it come in contact with metal at any point. The water heating process is quick and efficient in saving energy. The requirement that must be met with this model is a 6 awg wire.

Model IR260 is only for hand wash, bathroom, kitchen sink or other outdoor faucets and not for a shower head or entire house usage, with the exception where you have inlet ground water temperature incoming at least 72F degree and above then you can use for a 1.5 gpm water saving shower head

Altogether, with SioGreen IR260 you will have the best experience when it comes to using an electric tankless water heater. With no maintenance necessary, you will save time and money thanks to this advanced technology model.

Pros
  • No maintenance
  • Infrared heater
  • Coil-less technology
  • Energy saver
  • Sleek design
Cons
  • Limited Warranty

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BOSCH Tronic 3000 – Best Point of use water Heater

We have come to one of the most affordable models on the market today but don’t let that fool you, the low price of a BOSCH Tronic 3000 does not indicate its quality. Customers who have purchased this appliance are happy to have it in their home.

BOSCH Tronic 3000 9.5 kW (US9) Electric Tankless Water Heater

The BOSCH Tronic 3000 model has a 9.5 kw output and works on 220 volts. It is capable of providing endless hot water on demand for two units at one time, whether it is two sinks or a sink and a shower. Customers love this model because it is lightweight and very compact. It comes in four sizes with the possibility of mounting it on a wall.

The water is heated quickly thanks to a good water flow system. The easy installation process enables you to set up the appliance by yourself, only if you are familiar with electricity. Otherwise, having a professional set up the heater is highly recommended.

Bosch Tronic 3000 water heater Provides hot water with electrical power at the sink where you need it, so you don’t waste time or water waiting.Bosch tankless water heaters are 98% efficient and no temperature or pressure relief valve is necessary.Because water is heated directly without the use of a storage tank, there’s no standby energy loss experienced by traditional tank heaters, and no pressure or relief valve is required.

Bosch tankless heaters are compact and lightweight and can be mounted vertically or horizontally to blend in seamlessly with existing decoration.

Ideal tankless electric hot water heater for Half bathrooms and powder rooms, Basement wet bars, Laundry rooms, Kitchenettes, Patio sinks, Pool Houses, Garages, Single-unit use in apartment buildings and multi-family homes.

Little tough to install. Also, It lacks modern design and appearance as well as the LED control panel.

Altogether, for the cheap price, this electric tankless water heater is more than good quality. It will run for years, providing you hot water on demand on more than one sink in the house. The BOSCH Tronic 3000 is definitely a recommended model if you are looking for a smaller, compatible appliance.

Pros
  • Lightweight
  • Comes in four sizes
  • Efficient energy saver
  • Supplies hot water quickly
  • Cheap
Cons
  • Limited warranty
  • No modern design

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Eccotemp L5 – Outdoor electric tankless water heater

Last but not least on our list is an interesting tankless water heater model by Eccotemp, the L5. This is a portable water heater model and outdoor shower which is why it is the best selling model on the market at the moment.Eccotemp L5 Portable Tankless Water Heater and Outdoor Shower

This 1.4 GPM portable tankless water heater will provide you with endless hot water on the go. It is perfect for larger yards, campsites, lake areas or anywhere where hot water is needed.

At 13 pounds, this lightweight model is easy to store, carry and install pretty much anywhere. With a minimum flow of 0.3 L of water per minute, you will have enough water for all your outdoor needs.

This model is powered by two D-cell batteries, meaning it can provide water heating even in places with no electricity. All you need to do is connect it to a garden hose nozzle and a propane tank.

Being able to provide more than a gallon of hot water per minute, this portable tankless heater will leave you speechless with its performance. The ideal water pressure rates for this model would be 20 to 80 PSI.

With little to no disadvantages at all, this portable heater is one of the most convenient water heating appliances out there. However, what we consider a disadvantage is that the propane fuel tank does not come in the package, meaning you would have to make an additional purchase to have this heater running.
Pros
  • Portable
  • Lightweight
  • Water on the go
  • Outdoor Shower
  • Easy to install
Cons
  • Limited warranty
  • No propane tank included

Click here to check price

Buyer’s Guide – What to look for when buying an electric tankless water heater

When choosing the best electric tankless water heater, you must consider many factors. People always look for high quality in the first place but that is where they make the first mistake. It is generally believed that the quality is indicated by the price of an appliance. While in some cases that might be true, this is definitely not one of them.

There are plenty of cheaper models available that will offer you just about the same deal as the more expensive ones. So, let’s take a look at the factors you should consider when buying an electric tankless water heater.

The size of the appliance is important in order for you to be able to place the heater where you find convenient, whether it is your bathroom, kitchen or even the basement. Heating capabilities are crucial because of the number of people who would be using the appliance. Therefore, the heating capability must meet the requirements such as being able to provide hot water on the sink and in the shower at the same time.

Energy saving efficiency is an important factor because it is part of the reason why you are getting the tankless heater anyway. Making sure your electric system meets all requirements for a certain heater model is essential to get the best efficiency in energy saving as well as the least number of malfunctions possible.

Additional things you can look for are the speed of the heating process and the pressure specifications. With some of the lower quality models, you will experience lower pressure if you run several taps at once.