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Looking for a way to heat water without the inconvenience and waste of a storage tank?
Try electric instant hot water heaters, commonly known as tankless heaters.
These simple gadgets spring into action only when needed, preserving energy, saving water, and, eventually, your money.
Plus, they promise steady pressure and temperature unlike the usual tank water heaters which may vary the temperature of water, therefore extending the lifetime of the tank and protecting your pocket from severe costs.
In the guide below, we’ve analyzed the seven top electric instant hot water heaters available in Australia in 2024.
Product Overview
The Stiebel Eltron DHE 27 AU is a 3-phase electric instant water heater that can deliver up to 27 liters of hot water per minute, with full electronic control and a 4i technology that ensures accurate and consistent water temperature at all times.
It is convenient to use in multiple locations and ensures high energy efficiency and eco-friendliness, thanks to its ECO mode and energy and water consumption LEDs.
It also has a backlit multifunction display, individual memory buttons, and additional functions such as a temperature limit, a wellness shower program, an automated bath filling, and childproofing setting for greater convenience and safety.
Its size is ideal for larger homes with two bathrooms or more, or high hot water demands. If you need to service one bathroom only, we recommend buying the DHE 18 AU.
Specs:
Location: Indoor or outdoor
Warranty
Product Overview
Convenient and robust, the Girard Prod 2GWHAM Tankless Water Heater offers instant hot water for your needs. Using 12V power, it works silently via a brushless motor and boasts a strong output of 42,000 BTUs, delivering hot water instantly.
Thanks to its in-built microprocessor, it constantly controls the temperature of the incoming water, the amount of water flowing, and that of the outgoing water, to properly calibrate the delivered output.
It’s efficient and environmentally friendly, using only half the energy that an alternative six-gallon tank heater would need for the same amount of hot water.
It also has an intelligent control panel, allowing you to adjust the temperature setting from 95 to 124°F, toggle between Fahrenheit and Celsius, get a continuous water outlet temperature reading, and more.
Specs:
Location: Indoor or outdoor
The EEMAX HA027240 Electric Tankless Water Heater 27000W is a whole-house electric water heater that can provide up to 8 gallons per minute of hot water at a set temperature. It has a 99% energy efficiency rating and a digital temperature control.
It also has a durable, easily replaceable heating element, a copper heat exchanger with a brass top, and a vent-free design. Its size and capacity make it suitable for homes with two to three bathrooms and if you need to service more bathrooms, we recommend buying the HA036240.
Specs:
Location: Indoor
Warranty
The Rheem RTEX-13 is a rapid solution for hot water needs, and is a tankless heater that can handle multiple hot water demands at once. What’s cool is its digital thermostat and LED-screen, which allow you to vary the temperature of the water by a single degree from 80°F to 140°F.
Its two copper heating parts are built to last and are easy to swap out. Plus, it is fitted with a self-adjusting power control that matches energy use to the water flow.
Need to manage your heater from a distance? No problem. It smoothly pairs with the Rheem EcoNet app, allowing you to closely monitor and change the settings of your heater straight from your phone.
Specs:
Location: Indoor
Warranty
If you have a warm indoor environment at home, then the EcoSmart ECO 27 may be the right solution for you. It’s a tankless electric water heater that can supply your entire house with hot water on demand.
It has a great feature of self-modulating technology which helps manage the power used based on the water needs. Moreover, you can save up to 50% on your water heating bills.
This heater also has a digital screen which shows the temperature of the water and allows you to adjust the setting by 1-degree variations. The amount of hot water it provides can also vary between 2.7 to 6.5 gallons per minute. However, the exact amount depends on your incoming water’s temperature.
The heater also has a manual switch, which can come in handy during a power outage. The switch can reset the heater to its original settings.
Specs:
Location: Indoor
Warranty
The Bosch Electric Mini-Tank Water Heater Tronic 3000 T 4-Gallon (ES4) is a simple point-of-use water heater that can fit under your sink or can be mounted on the wall or installed floor-mounted.
It can provide hot water right as needed, eliminating the wait time and saving water and energy, with its thermal efficiency of 98% and fast recovery rate. It can supply up to 2 sinks at one time and has a premium glass-lined material to ensure a long service life.
Specs:
Location: Indoor
Warranty
6 years for residential parts and labor 1 year for commercial parts and labor
The Biselong Electric Tankless Water Heater is a powerful, all-purpose equipment. It can provide a substantial supply of hot water for both kitchen and bathroom use. The heater’s 12KW system heats water in seconds, with no preheating or standby losses.
It has a clever chip that changes power use tied to water flow and temperature, which can save up to 90% on electricity costs. It includes a digital screen that can display the current water temperature and a convenient adjustment knob.
The heater has a self-protection feature to prevent mineral build-up which extends its lifespan. If the water pressure is low, it can still properly function due to its startup setting.
Specs:
Location: Indoor
Warranty
There are many factors to consider when choosing the best solution to suit your needs, such as:
Here are some of the pros and cons of electric instant water heaters:
Instant electric hot water heaters can rapidly deliver substantial amounts of hot water, with no storage tank required. They’re efficient, green, small, and easy to set up. On the downside they have a high initial cost, require regular maintenance , and are vulnerable to power outages.
So, when looking for the most suitable application, make a list that checks finances, your electricity setup, your hot water needs, and your personal preferences.
This article can serve as a guide for the top 7 electric instant hot water heaters available in Australia in 2024 with respect to their features, capabilities, and overall performance.