5 Best Electric Tankless Water Heaters in Australia Review 2023

The internet is a resourceful place. It is one of the most reliable places to buy the best electric tankless water heater. If you have landed on this page, you most likely want to buy an electric tankless water heater for your home.

If yes, read on. In this best electric tankless water heater review, we will list the 5 best electric tankless water heaters in Australia for you. We will also explore the different types of electric tankless water heaters, and much more.

We live in the 21st century. The 21st century is the age of technological advancements that have made our lives easier and more comfortable on many levels. An electric tankless water heater is one such technological advancement that gives you the pleasure of using hot water instantly.

If you have been searching online for the best electric tankless water heater, you know that there are many options to choose from. So, how do you know the water heater is a good one and will give you value for your money? Some water heaters do not deliver what they promise.

Thankfully, there are amazing electric tankless water heaters available in the market. We have put together this list to help you choose the best electric tankless water heater and get full value for your money. All the heaters that we have recommended below are high-quality water heaters. They will last you a long time and give you a constant supply of hot water.

These 5 water heaters made it to our list after we critically analyzed several water heaters. Our recommendations are based on in-depth market research, customer reviews, quality, performance, and brand reputation.

The Best Electric Tankless Water Heater – Top 5 Picks Electric Tankless Water Heater Buyer’s Best Guide

Stiebel Eltron Tankless Water Heater 


This top-of-the-line Stiebel Eltron water heater makes it to the top of our best electric tankless water heater list for many solid reasons. First, because we love its sleek and elegant design. We also love that it does not take up much space in the bathroom. And since it does not need any venting, it easily fits in a small space and is really easy to install.

This sleek design comes with a display screen that allows you to monitor the water temperature and increases energy efficiency. What’s even more impressive about this electric tankless water heater is its unique Advanced Flow Control technology. This technology provides a constant flow of hot water and ensures that your shower will always stay hot.


  • Energy efficient
  • Does not make any noise
  • Sleek and elegant design
  • Saves space with its compact design
  • 7-year leakage warranty
  • 3-year other parts warranty
  • Buy here

Stiebel Eltron 224199 Tempra 24 Plus Whole House Tankless Electric Water Heater


This is another amazing electric tankless water heater by Stiebel Eltron. One of the reasons this water heater made it to our best electric tankless water heater list is because it is made by Stiebel Eltron. We love this company. And we trust and highly recommend it. They have been quality water heating devices since 1924. It is one of the oldest companies and undoubtedly one of the best.

This Tempra 24 electric tankless water heater is one such exceptional unit they have made. This model is highly reliable and comes with a digital monitoring screen. What we love about this heater is that it promises to give a maximum energy saving. It can do this because it has a unique technology that only uses energy when you need hot water, thereby having absolutely no standby losses at all.


  • Constant flowing hot water
  • Digital display screen
  • Advanced flow control technology
  • Saves a ton of energy
  • Does not require venting
  • Reduces15-20% of your electric bill
  • Buy here

EcoSmart ECO 27 Best Electric Tankless Water Heater


One of the most important reasons this heater made it to our list is that it promises to save 50 percent of your heating costs. Not only does it have a sleek and compact design, but it also comes with a digital control screen. This screen allows you to control the hot water efficiently and effortlessly.

This unit comes with an activation flow of 0.3 gallons per minute. What’s even more impressive about this unit is that it is made with durable materials. The insides are made of copper and stainless steel. These solid and durable materials will make sure that the unit lasts a long time and is easy to maintain.


  • Save up to 50 percent of energy costs
  • Comes with a digital control screen
  • Lifetime warranty (limited)
  • Easy to maintain and replace parts
  • Activation flow : 0.3 GPM
  • Buy here

Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater


Rheem is another old and trusted brand that began in 1925. They make high-quality boilers, water heaters, and many other types of equipment. This RTEX-13 tankless water heater is one such premium-quality water heater made by Rheem. It comes with an external adjustable digital thermostatic control along with a LED display that shows high accuracy.

It contains two heating elements that are made of high-quality, durable copper. What we love even more about this heater is its self-modulating power control. It’s easy to install, and all the things you might need to install comes with the package. This unit has a water flow of 1.5 GMP and 99.98 percent energy-efficient.


  • Easy to install
  • Comes with heating elements made of durable copper
  • Energy efficiency is 99.8 percent
  • External adjustable digital thermostatic control
  • Self-modulating power control
  • Buy here 

ECOTOUCH Electric Point-of-Use Hot Water Heater


This Ecotouch electric tankless water heater is one of a kind and is a premium-quality point of use water heater in Australia . It comes with a 5.5KW heating system, and with this heater, it is time to say goodbye to lukewarm water. It supplies you with instant hot water without having to wait and is the perfect companion for your sink.

What we love about this unit is that it has a unique feature of smart self-adjustment. This feature allows the unit to adjust its power depending on the water flow rate and temperature setting. For example, when you reduce the water flow, the heater will automatically use less power.

All components of this unit have been thoroughly tested and are 100 percent safe and durable.


  • 5.5kW heating system
  • Digital control panel and display
  • Smart self-adjustment
  • No scale build-up or leakage
  • 100 percent safe
  • Made from high-quality, durable materials
  • Compact and sleek design
  • Does not take up much space
  • Buy here 

Electric Tankless Water Heater – What is it? 

To better understand what an electric tankless water heater is, it is helpful if you first understand what a with-tank water heater is. A water heater with a tank stores water in the tank and heats it. It also stores the heated water in the tank for you to use later on. So you can basically switch on the button to heat water and then use that hot water whenever you want.

A water heater with a tank usually takes around 30-50 minutes to heat the water. The amount of time it takes to heat the water depends on the capacity of the tank. A heater with a tank capacity of 30 liters takes approximately 30-40 minutes to heat water. And the heater with a higher capacity takes more time.

Electric tankless water heaters, on the other hand, do not have a tank at all. Instead, they have a heating element that instantly heats the water. So, with a tankless water heater, all you need to do is switch on the geyser button and the hot water tap, and within just one 1-5 seconds, you will have a continuous supply of hot water.

In a with-tank water heater, you get a limited quantity of hot water at a time. And in a tankless water heater, you get unlimited hot water. Tankless water heaters use 30 to 50 percent less energy than with-tank water heaters because you do not need to keep the geyser on for a long time.

Electric tankless water heaters are, without a doubt, more energy and cost-efficient than traditional water heaters. Even though tankless water heaters are more expensive than traditional ones, they save more money in the long run.

Buying Guide for Electric Tankless Water Heaters 


In this section, we have put together an elaborate buying guide. Hopefully, it will help you make the right choice for which will be worth your investment in the long run. If you did not like the tankless water heaters we have recommended above, you could keep searching for the right one for you with the help of this guide. So without any further delay, read on to know more about electric tankless water heaters.

Things to Consider When Buying an Electric Tankless Water Heater

There are a few important things you need to consider while buying an electric tankless water heater. To make the right choice, you need to understand the hot water needs of your household. If you want to make the right choice, don’t go for the cheapest or the most expensive electric tankless water heater.

Just because it is cheap or expensive won’t determine if that particular water heater would be good for you. You need to consider if you live alone or with a large family. And besides the hot water demand of your household, there are a few more things you need to consider while buying an electric tankless water heater. Let’s explore these important considerations in detail.

Ease of Installation 

The first and one of the most important things to consider while buying an electric tankless water heater is the ease of installation. Electric tankless water heaters are overall easy to install. However, some household electrical systems are not compatible with these types of heaters.

No doubt that tankless heaters are much more inexpensive than gas water heaters. However, since some household electrical systems may not be compatible with tankless heaters, you might need to change the whole electrical system. This will cost you a few extra hundred dollars. So make sure that electric tankless water heaters are compatible with your home and are easy to install.

Does the design matter?

Electric tankless water heaters have a rather simple design. They may not look fancy or even too appealing. However, the ease and efficiency with which they provide hot water is definitely enough to over-look the simple design aspect. They are also much easier to troubleshoot than gas water heaters.

In fact, they are so easy to troubleshoot that you could repair, diagnose, and troubleshoot the machine on your own. This means that electric tankless heaters have a longer life than gas water heaters. Electric tankless water heaters are also really small in size. As you may have seen in our recommendations, they are also available in mini models that fit easily fit anywhere. They are about the third the size of gas heaters.

Costs and Efficiency 

Another important thing to consider while buying an electric tankless water heater is its efficiency and costs. Tankless heaters are extremely energy efficient and use over 98 percent of the electricity they receive to heat the water. This means that no electricity is lost or wasted, saving you lots of electricity and energy costs in the long run.

Water flow 

Consider the water flow of the electric tankless water heater before you buy it. You have heaters that have less water flow, which is suitable for smaller families. These water heaters are known as single-use water heaters. If you have a large family, you will need the whole-house heaters that provide 3-9 gallons of water per minute to your entire house.

Safety features 

Electric water heaters are really convenient devices. However, they also come with risks. So, choose a water heater that comes with safety features to protect you and your family. When buying a tankless water heater, look for self-protection features like temperature lock, freeze protection, self-modulating technology, and much more.


Always go for a heater that comes with a long warranty period. An electric tankless water heater is not something you change every few years. Once you buy it, you use it for at least 20 years. So, to save up on maintenance and repair charges, look for a heater that comes with a long warranty period.

Important Features of an Electric Tankless Water Heater: Tankless Water Heater Requirements


Now that you know the important things you need to consider while buying an electric tankless water heater let’s explore further. In this section, we will explore the important features of a high-quality tankless water heater.

One of the most important features of a quality heater is that it can be installed anywhere. Heaters that come with flexible installation spots can be installed anywhere as long as there is a plug nearby to put them in.

Another important feature is the time it takes to get hot water. Some tankless heaters give you instant hot water, while others take a minute or 50 seconds to heat up and get the hot water flowing. Electric water heaters consume more energy to heat the water and are also more expensive than gas water heaters.

An amazing feature of tankless systems is that you get on-demand and on the spot hot water. You can have hot water and use it for anything you want every time you open the water faucet. Electric tankless water heaters also have maximum energy efficiency. They use almost 98 – 99 percent of the energy they receive on heating up the water without wasting any energy at all.

Another important feature of a quality electric tankless water heater is that it provides protection from diseases. Stagnant water is more susceptible to the build-up of bacteria in it. But since the water is constantly flowing in electric tankless water heaters, there is no scope for the build-up of harmful bacteria. This keeps you safe and healthy and free from bacteria and virus invasion.

Different Types of Electric Tankless Water Heaters in Australia | Best Electric Tankless Water Heater in Australia 

Whole-House Electric Tankless Water Heaters in Australia 

As the name suggests, these types of heaters heat up water enough for the whole house. So, whether you want to bathe or need hot water for cooking, you can have hot water anywhere in the house. With a whole-house electric tankless water heater, you will have hot water in every faucet of your house.

However, choose the right whole-house heater according to your needs. Large flow type whole-house heaters can cater to 3 to 4 bathrooms. And small flow type heaters will work great for houses with one bathroom.

Point of Use Electric Tankless Water Heaters in Australia 

As the name suggests, these types of heaters provide hot water to one faucet or on point-of-use in the room. They eliminate standby heat loss completely, are energy efficient, and also pretty easy to install. So, if you have a 3 or 4 bedroom house, you may need 3-4 point of use electric tankless water heaters.

Outdoor Electric Tankless Water Heaters in Australia 

While other types of electric tankless heaters are placed and installed inside the bathroom, this one is placed outside. If you do not have enough space inside the bathroom, these types of heaters are excellent. They come with a freeze protection feature and sometimes also with a rain cap to increase the life of the heater.

Portable Electric Tankless Water Heaters in Australia 

These types of heaters are ideal for camping and traveling. They are light and easy to carry around. They have a lower flow rate, but you can use them and install them wherever you want. For example, if you are traveling somewhere in your RV, you can easily install this type of heater in it.

Advantages and Disadvantages of Electric Tankless Water Heaters in Australia 

In this section, we will briefly explore the pros and cons of tankless water heaters.


  • The biggest advantage of an electric tankless water heater is that you can get instant hot water. You do not have to wait any more than a minute to get hot water.
  • Electric tankless heaters are also energy efficient. They save up to 60 percent energy costs as compared to other heaters.
  • Since they do not exert any greenhouse gas emissions, they are also environmentally friendly.
  • They have a sleek and compact design and hence save a lot of space.
  • An electric tankless water heater is also easy to install. You do not venting kits and can easily install them anywhere you want.
  • While traditional heaters last up to 10 years, tankless heaters last for more than 20 years.
  • Tankless water heaters are less risky than tank water heaters. Tank water heaters are more prone to bursting and leaks. Tank heaters can burst and flood your home. Tankless heaters can also burst but will not flood your house.


  • Tankless water heaters have a less water flow than gas or with tank heaters.
  • Tankless heaters cost more than gas or traditional heaters.

FAQs for Electric Tankless Water Heaters in Australia – More Information About Electric Tankless Water Heaters

  • Should I install special faucets for an electric tankless water heater?

No, you do not need to install new or special faucets in order to use a tankless heater. You can use these heaters with the faucets that are already present in the bathroom and kitchen.

  • What is the most important benefit of an electric tankless water heater?

The most important benefit of these heaters is that they instantly heat up the water within just a few seconds. And they save 60 percent of energy costs.

  • Will this type of heater work on my home’s current electric system?

In most cases, you will have to upgrade your home’s electrical system to feed the power and voltage needs of an electric tankless system.


If you have the budget for it, an electric tankless heater is the best and most efficient choice you can make to get instant hot water in your home. With a quality tankless heater, you can say goodbye to waiting almost an hour to get hot water to bathe or do anything else.

We hope that the best electric tankless heater list that we have provided with you above has given you enough options to choose from. And we also hope the buying guide will help you make the right choice that is perfect for your home’s hot water needs.

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