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The 10 best tankless water heaters to buy in Australia

Picture of a tankless water heater

Finding the best tankless water heater system for your home can help save a lot of money in energy bills, although knowing what to look for in a heating system can be challenging for anyone that isn’t a plumber. Given the cost of paying for a new heating system, you will want to put a lot of thought and consideration into your decision, which is not always easy if you are unfamiliar with what a tankless water heater is and how to choose the right one for your home.

To help with this, we have created a handy buying guide that covers all the information that you need to know to find the best tankless water heaters for your home.

What are tankless water heaters?

As the name suggests, a tankless water heater is a type of water heating system that does not use a large water tank to store heated water. Instead, cold water passes through a pipe and into the heating unit, which uses either a gas burner or electric element to instantly heat the water. Whenever you turn on hot water, you instantly get a constant supply as there is no need to wait for a tank to fill with heated water. Therefore, a good tankless water heater makes hot water very convenient and energy-efficient.

Why should you buy a good tankless water heater?

One of the major benefits of using tankless water heaters is reduced energy consumption. Because there is no tank to fill and store with hot water, it can help to reduce water heating bills. Furthermore, while the initial cost of installation is higher than a tanked water heater, the best tankless water heaters are much more durable so will last significantly longer. This means you can save money over the long term, making it a fantastic investment for many homeowners.

How to choose the right tankless water heater in 2024?

Another picture of a tankless water heater

Choosing a new tankless water heater can be daunting for those unfamiliar with water heating systems. So here are some things to consider that can make the process easier:

  • Hot Water Consumption: You need to determine how much hot water you consume daily so that you can select a tankless water heater that meets the demand. Simply list all the fixtures in your home that use hot water at any time (e.g. faucet, shower head, dishwasher) and combine their flow rates. To check flow rate, simply refer to the manufacturer instructions for any fixture you’ve bought or check online for a rough estimate of each fixture.
  • Temperature Rise: This refers to the temperature that the heater uses to warm incoming water to the desired temperature. To calculate, you need to determine the average temperature of incoming water and subtract from the desired incoming temperature.
  • Power Source: A tankless water heater is either gas-powered or electric, so consider which is best for your needs. Electric is suitable for smaller water heaters designed for point of use (e.g. heating water for just the shower), while gas-powered water heaters are best for an entire household’s water heating.

What is the best kind of tankless water heater in Australia?

There are two main types of tankless water heaters available to buy:

  • Gas-powered Tankless Water Heaters: Gas-powered systems are more powered and the most used, being the best tankless water heater for an entire household. However, you need to ensure that appropriate piping is in place and consider its location relative to where the heater will go, otherwise extensive installation work may be necessary.
  • Electric Tankless Water Heaters: Electrically powered systems are only recommended for point of use rather than a whole household, as it puts too much strain on the electrical supply when forced to heat too much water. It is more affordable to install, however.

Top 10 list of tankless water heaters in Australia (2024)

The bestseller list compares brands and their tankless water heaters. Which tankless water heater is the best?
Best choice TOP 1
Image of GUYOS GUYOSBUOAUS92TOE24772AU tankless water heater
GUYOS Instant Water Heater 220V 3500W Mini Electric Tankless Hot Water…
  • This is a water heater for the application of changing the cold water into hot water…
  • ABS construction with mini design, it is durable, elegant and fashionable.
  • Safe heater, electricity saving, water saving, no pollution, no exhaust gas.
BUY NOW
TOP 2
Image of Mingzhe RLOAULXXE22596W-EU tankless water heater
Mingzhe Instant Water Heater 3KW Mini Electric Tankless Water Heater…
  • Using high-quali cast aluminum heating body, water and electrici separation, no scale,…
  • Built-in intelligent chip, strictly control the water temperature, more stable. Wi…
  • Instant electric water heater can guarantee 24-hour hot water without waiting, which…
BUY NOW
TOP 3
Image of HIKOAN  tankless water heater
HIKOAN Instant Water Heater 220V 3500W Mini Electric Tankless Hot…
BUY NOW
Offer TOP 4
Image of GUPE GUPEy8597xqkos tankless water heater
Tankless Water Heater, 240V 3.4KW Mini Electric Instant Hot Water…
  • Water Inlet Method: Cold water enters from the bottom after being heated by the water…
  • Excellent Function: Tankless water heater, mini design, stainless steel design, durable,…
  • Applicable Scenes: Instant electric water heater meets your various needs, suitable…
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TOP 5
Image of MSQL 102-831-732 tankless water heater
220v Tankless Instantaneous Electric Water Heater with LCD Display…
  • Product parameters: heating material: stainless steel; product voltage: 220v; heating…
  • Energy efficient: instant on and off, circulating heating, so you can save a lot…
  • Remote operationWith remote control, you can set the temperature by remote control,…
BUY NOW
TOP 6
Image of BTER BTER8qm5ws6gdc6930 tankless water heater
Electric Tankless Water Heater, 3.4KW Compact Digital Display Constant…
  • POINT OF USEThe sleek tankless water heater is compact as an oatmeal box, making…
  • ABSOLUTELY SAFEThis electric water heater uses a metal lining to separate water and…
  • SAVE ENERGYWater is only heated when you need it, not stored in a hot water tank.…
BUY NOW
TOP 7
Image of forimo Water Heater-011 tankless water heater
Tankless Water Heater 5.26GPM 20L Outdoor Portable GasHot Water Heater…
  • Wide Usage - This Camping Heater, Perfect for Outdoor Shower, Which Bringing an Amazing…
  • Complete Accessories -This tankless water heater comes with CSA approval 5FT Gas…
  • Portable Design -Portable Water Heater size and lightweight make the water heater…
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TOP 8
Image of Mingzhe RLOAULXXE22637B-EU tankless water heater
Mingzhe Instant Water Heater 7500W Mini Electric Tankless Water Heater…
  • Power Adjustment: The electric water heater supports 5 power adjustment, each level…
  • Low-Pressure Operation: Using high-sensitivi water flows sensor, 0.04MPA low water…
  • 24-Hour Hot Water: High-power instant electric water heater can guarantee 24-hour…
BUY NOW
TOP 9
Image of Fdit  tankless water heater
Water Heater, White Mini Electric Tankless Instant Hot Water Heater,…
  • QUALITY ASSURANCE: We hope you have the best shopping experience with us and with…
  • EASY TO INSTALL: Just install the small water heater on a shelf, wall or bracket…
  • SAFE TO USE: Stainless construction with mini design, it is durable, elegant and…
BUY NOW
TOP 10
Image of Ecosmart ECO 36 tankless water heater
Ecosmart ECO 36 36kw 240V Electric Tankless Water Heater
  • 150 A
  • Required Breaker:4 x 40 A
  • Pipe Fittings:3/4 inch NPT
BUY NOW
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