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Instant Hot Water Systems

Instantaneous heaters operate by heating water on demand. They enable you to have a continuous flow of hot water because there is no storage tank, meaning your hot water supply won’t run out! The size of these instantaneous hot water systems is quite small in comparison to storage heaters, which allows them to be installed in places with limited space.
1300 725 760

Instant Hot Water Systems

If you are looking for an efficient way to heat your water and need a system that provides a reliable supply, you should consider a hot water system that is based on a continuous flow. Unlike traditional storage hot water systems that can only heat a certain amount of water at one time, continuous flow hot water systems will never run out, unless of course you run out of gas to heat it! Instant hot water systems also don’t need to keep water heated when it is not in use; this makes the much more energy efficient saving you money on your bills. Instant hot water systems also take up much less space when compared to storage hot water systems.

If you’re looking for instant hot water systems, you’re in the right place. We’ve got a great range of instant hot water systems for you to choose from. We also have an installation service that will ensure that the installation is done correctly by a licensed plumber. Our locally owned and operated business has been providing fast, friendly and reliable hot water for years. Over this time we’ve created a reputation for excellence with 4000+ 5 star reviews. At Service Today we provide top quality plumbing services that you can rely on. We’re so confident in this that all of our work is backed up by a lifetime labour warranty. For a limited time we are also offering $100 off when you trade in your old hot water system! On top of this, if you book online we’ll take another $50 off. If you need an instant hot water system supplied and installed for one low price, at Service Today we say ‘Yes We Can!’

Available 24/71300 725 760

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Browse Our Instant Hot Water Systems Supplied and Installed

Over the years, Service Today have gained a reputation for being #1 in Hot water systems. Whether you’re looking for hot water systems in Melbourne, hot water systems in Sydney and hot water systems in Adelaide, we have a local plumber in your area ready to help!

Rinnai Infinity 20 Hot Water System

Rinnai Infinity 20 LPG Continuous Flow Hot Water System – 60°C

The Rinnai Infinity 20 delivers up to 24L of hot water a minute, and is ideal for one to two bathroom homes. This energy efficient model has a low running cost and ensures you will never run out of hot water, thanks to its continuous flow technology. Available in Natural Gas and LPG, this water heater has a 6 star energy rating and comes with a 12 year warranty on the heat exchanger.

  • tickDimensions: 571H x 356W x 202D mm
  • tickSuitable for households with 1-2 shower outlets
  • tickEnergy Star Rating: 6.0 Equivalent
  • tick12 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 60°C
Make A Booking
Rinnai Infinity 26

Rinnai Infinity 26 Natural Gas Continuous Flow Hot Water System – 50°C

The Rinnai Infinity 26 provides a continuous supply of hot water, and is ideal for two to three bathroom homes. This energy efficient model has a low running cost and ensures you will never run out of hot water, thanks to its continuous flow technology. Available in Natural Gas and LPG, this water heater has a 6 star energy rating and comes with a 12 year warranty on the heat exchanger.

  • tickDimensions: 571H x 356W x 202D mm
  • tickSuitable for households with 1-3 shower outlets
  • tickEnergy Star Rating: 6.0 Equivalent
  • tick12 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 50°C
Make A Booking
Rinnai Infinity 26 Hot Water System

Rinnai Infinity 26 Natural Gas Continuous Flow Hot Water System – 60°C

The Rinnai Infinity 26 provides a continuous supply of hot water, and is ideal for two to three bathroom homes. This energy efficient model has a low running cost and ensures you will never run out of hot water, thanks to its continuous flow technology. Available in Natural Gas and LPG, this water heater has a 6 star energy rating and comes with a 12 year warranty on the heat exchanger.

  • tickDimensions: 571H x 356W x 202D mm
  • tickSuitable for households with 1-3 shower outlets
  • tickEnergy Star Rating: 6.0 Equivalent
  • tick12 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 60°C
Make A Booking
Rinnai Infinity 26 Hot Water System

Rinnai Infinity 26 LPG Continuous Flow Hot Water System – 50°C

The Rinnai Infinity 26 provides a continuous supply of hot water, and is ideal for two to three bathroom homes. This energy efficient model has a low running cost and ensures you will never run out of hot water, thanks to its continuous flow technology. Available in Natural Gas and LPG, this water heater has a 6 star energy rating and comes with a 12 year warranty on the heat exchanger.

  • tickDimensions: 571H x 356W x 202D mm
  • tickSuitable for households with 1-3 shower outlets
  • tickEnergy Star Rating: 6.0 Equivalent
  • tick12 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 50°C
Make A Booking
Rinnai Infinity 26 Hot Water System

Rinnai Infinity 26 LPG Continuous Flow Hot Water System – 60°C

The Rinnai Infinity 26 provides a continuous supply of hot water, and is ideal for two to three bathroom homes. This energy efficient model has a low running cost and ensures you will never run out of hot water, thanks to its continuous flow technology. Available in Natural Gas and LPG, this water heater has a 6 star energy rating and comes with a 12 year warranty on the heat exchanger.

  • tickDimensions: 571H x 356W x 202D mm
  • tickSuitable for households with 1-3 shower outlets
  • tickEnergy Star Rating: 6.0 Equivalent
  • tick12 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 60°C
Make A Booking
Rinnai Infinity 26i Hot Water System

Rinnai Infinity 26i (Internal) Natural Gas Continuous Flow Hot Water System – 50°C

The Rinnai Infinity 26i is a continuous flow water heater that can be installed internally. A separately purchased flue kit allows this system to be ‘room sealed’, meaning it can be installed almost anywhere. This energy efficient model has a low running cost and ensures you will never run out of hot water. Available in Natural Gas and LPG, this water heater has a 6 star energy rating and comes with a 12 year warranty on the heat exchanger.

  • tickDimensions: 641H x 350W x 274D mm
  • tickSuitable for households with 1-3 shower outlets
  • tickEnergy Star Rating: 6.1 Equivalent
  • tick12 Year Warranty on Heat Exchanger
  • tickInternal installation with Rinnai Flue System
Make A Booking
Rinnai Infinity 26i Hot Water System

Rinnai Infinity 26i (Internal) Natural Gas Continuous Flow Hot Water System – 60°C

The Rinnai Infinity 26i is a continuous flow water heater that can be installed internally. A separately purchased flue kit allows this system to be ‘room sealed’, meaning it can be installed almost anywhere. This energy efficient model has a low running cost and ensures you will never run out of hot water. Available in Natural Gas and LPG, this water heater has a 6 star energy rating and comes with a 12 year warranty on the heat exchanger.

  • tickDimensions: 641H x 350W x 274D mm
  • tickSuitable for households with 1-3 shower outlets
  • tickEnergy Star Rating: 6.1 Equivalent
  • tick12 Year Warranty on Heat Exchanger
  • tickInternal installation with Rinnai Flue System
Make A Booking
Rinnai Infinity 26i Hot Water System

Rinnai Infinity 26i (Internal) LPG Continuous Flow Hot Water System – 50°C

The Rinnai Infinity 26i is a continuous flow water heater that can be installed internally. A separately purchased flue kit allows this system to be ‘room sealed’, meaning it can be installed almost anywhere. This energy efficient model has a low running cost and ensures you will never run out of hot water. Available in Natural Gas and LPG, this water heater has a 6 star energy rating and comes with a 12 year warranty on the heat exchanger.

  • tickDimensions: 641H x 350W x 274D mm
  • tickSuitable for households with 1-3 shower outlets
  • tickEnergy Star Rating: 6.1 Equivalent
  • tick12 Year Warranty on Heat Exchanger
  • tickInternal installation with Rinnai Flue System
Make A Booking
Rinnai Infinity 26i Hot Water System

Rinnai Infinity 26i (Internal) LPG Continuous Flow Hot Water System – 60°C

The Rinnai Infinity 26i is a continuous flow water heater that can be installed internally. A separately purchased flue kit allows this system to be ‘room sealed’, meaning it can be installed almost anywhere. This energy efficient model has a low running cost and ensures you will never run out of hot water. Available in Natural Gas and LPG, this water heater has a 6 star energy rating and comes with a 12 year warranty on the heat exchanger.

  • tickDimensions: 641H x 350W x 274D mm
  • tickSuitable for households with 1-3 shower outlets
  • tickEnergy Star Rating: 6.1 Equivalent
  • tick12 Year Warranty on Heat Exchanger
  • tickInternal installation with Rinnai Flue System
Make A Booking
Rinnai Infinity 16 Hot Water System

Rinnai Infinity 16 Natural Gas Continuous Flow Hot Water System – 50°C

The Rinnai Infinity 16 provides a continuous supply of hot water, and is ideal for one bathroom homes. This energy efficient model has a low running cost and ensures you will never run out of hot water, thanks to its continuous flow technology. Available in Natural Gas and LPG, this water heater has a 6 star energy rating and comes with a 12 year warranty on the heat exchanger.

  • tickDimensions: 571H x 356W x 202D mm
  • tickSuitable for households with 1 shower outlet
  • tickEnergy Star Rating: 6.2 Equivalent
  • tick12 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 50°C
Make A Booking
Infinity 26 Enviro Hot Water System

Rinnai Infinity 26 ENVIRO Natural Gas Continuous Flow Hot Water System – 60°C

The Rinnai Infinity 26 ENVIRO is Australia’s first 7 Star equivalent 26L hot water system. This energy efficient system provides a continuous supply of hot water, using considerably less gas than a standard system. The Rinnai Infinity 26 ENVIRO generates only 1/6th of the greenhouse gas emissions of a standard electric hot water system, and comes with a 12 year warranty on the heat exchanger. Available in Natural Gas and LPG models.

  • tickDimensions: 670H x 470W x 283D mm
  • tickEnergy Star Rating: 7.0 Equivalent
  • tickGas Type: Natural Gas
  • tickAustralia's first 7 Star equivalent 26L hot water system
  • tickTemperature Preset: 60°C
Make A Booking
Rinnai Infinity 16 Hot Water System

Rinnai Infinity 16 Natural Gas Continuous Flow Hot Water System – 60°C

The Rinnai Infinity 16 provides a continuous supply of hot water, and is ideal for one bathroom homes. This energy efficient model has a low running cost and ensures you will never run out of hot water, thanks to its continuous flow technology. Available in Natural Gas and LPG, this water heater has a 6 star energy rating and comes with a 12 year warranty on the heat exchanger.

  • tickDimensions: 571H x 356W x 202D mm
  • tickSuitable for households with 1 shower outlet
  • tickEnergy Star Rating: 6.1 Equivalent
  • tick12 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 60°C
Make A Booking
Infinity 26 Enviro Hot Water System

Rinnai Infinity 26 ENVIRO LPG Continuous Flow Hot Water System – 60°C

The Rinnai Infinity 26 ENVIRO is Australia’s first 7 Star equivalent 26L hot water system. This energy efficient system provides a continuous supply of hot water, using considerably less gas than a standard system. The Rinnai Infinity 26 ENVIRO generates only 1/6th of the greenhouse gas emissions of a standard electric hot water system, and comes with a 12 year warranty on the heat exchanger. Available in Natural Gas and LPG models.

  • tickDimensions: 670H x 470W x 283D mm
  • tickEnergy Star Rating: 7.0 Equivalent
  • tickGas Type: LPG
  • tickAustralia's first 7 Star equivalent 26L hot water system
  • tickTemperature Preset: 60°C
Make A Booking
Rinnai Infinity 16 Hot Water System

Rinnai Infinity 16 LPG Continuous Flow Hot Water System – 50°C

The Rinnai Infinity 16 provides a continuous supply of hot water, and is ideal for one bathroom homes. This energy efficient model has a low running cost and ensures you will never run out of hot water, thanks to its continuous flow technology. Available in Natural Gas and LPG, this water heater has a 6 star energy rating and comes with a 12 year warranty on the heat exchanger.

  • tickDimensions: 571H x 356W x 202D mm
  • tickSuitable for households with 1 shower outlet
  • tickEnergy Star Rating: 6.1 Equivalent
  • tick12 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 50°C
Make A Booking
Rinnai Infinity 26 Touch Hot Water System

Rinnai Infinity 26 Touch Natural Gas Continuous Flow Hot Water System – 50°C

The Rinnai Infinity 26 Touch provides a continuous supply of hot water, and is ideal for two to three bathroom homes. This system features Rinnai’s unique fingertip wireless temperature control, for safe and precise temperature controlled hot water in your home. With low running costs and low greenhouse gas emissions, this energy efficient model has a 6 star energy rating and comes with a 12 year warranty on the heat exchanger.

  • tickDimensions: 571H x 356W x 202D mm
  • tickSuitable for households with 1-3 shower outlets
  • tickEnergy Star Rating: 6.0 Equivalent
  • tick12 Year Warranty on Heat Exchanger
  • tickFeatures Inbuilt Wireless Temperature Control
Make A Booking
Rinnai Infinity 16 Hot Water System

Rinnai Infinity 16 LPG Continuous Flow Hot Water System – 60°C

The Rinnai Infinity 16 provides a continuous supply of hot water, and is ideal for one bathroom homes. This energy efficient model has a low running cost and ensures you will never run out of hot water, thanks to its continuous flow technology. Available in Natural Gas and LPG, this water heater has a 6 star energy rating and comes with a 12 year warranty on the heat exchanger.

  • tickDimensions: 571H x 356W x 202D mm
  • tickSuitable for households with 1 shower outlet
  • tickEnergy Star Rating: 6.1 Equivalent
  • tick12 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 60°C
Make A Booking
Rinnai Infinity 26 Touch Hot Water System

Rinnai Infinity 26 Touch Natural Gas Continuous Flow Hot Water System – 60°C

The Rinnai Infinity 26 Touch provides a continuous supply of hot water, and is ideal for two to three bathroom homes. This system features Rinnai’s unique fingertip wireless temperature control, for safe and precise temperature controlled hot water in your home. With low running costs and low greenhouse gas emissions, this energy efficient model has a 6 star energy rating and comes with a 12 year warranty on the heat exchanger.

  • tickDimensions: 571H x 356W x 202D mm
  • tickSuitable for households with 1-3 shower outlets
  • tickEnergy Star Rating: 6.0 Equivalent
  • tick12 Year Warranty on Heat Exchanger
  • tickFeatures Inbuilt Wireless Temperature Control
Make A Booking
Rinnai Infinity 20 Hot Water System

Rinnai Infinity 20 Natural Gas Continuous Flow Hot Water System – 50°C

The Rinnai Infinity 20 delivers up to 24L of hot water a minute, and is ideal for one to two bathroom homes. This energy efficient model has a low running cost and ensures you will never run out of hot water, thanks to its continuous flow technology. Available in Natural Gas and LPG, this water heater has a 6 star energy rating and comes with a 12 year warranty on the heat exchanger.

  • tickDimensions: 571H x 356W x 202D mm
  • tickSuitable for households with 1-2 shower outlets
  • tickEnergy Star Rating: 6.0 Equivalent
  • tick12 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 50°C
Make A Booking
Rinnai Infinity 20 Hot Water System

Rinnai Infinity 20 Natural Gas Continuous Flow Hot Water System – 60°C

The Rinnai Infinity 20 delivers up to 24L of hot water a minute, and is ideal for one to two bathroom homes. This energy efficient model has a low running cost and ensures you will never run out of hot water, thanks to its continuous flow technology. Available in Natural Gas and LPG, this water heater has a 6 star energy rating and comes with a 12 year warranty on the heat exchanger.

  • tickDimensions: 571H x 356W x 202D mm
  • tickSuitable for households with 1-2 shower outlets
  • tickEnergy Star Rating: 6.0 Equivalent
  • tick12 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 60°C
Make A Booking
Rinnai Infinity 20 Hot Water System

Rinnai Infinity 20 LPG Continuous Flow Hot Water System – 50°C

The Rinnai Infinity 20 delivers up to 24L of hot water a minute, and is ideal for one to two bathroom homes. This energy efficient model has a low running cost and ensures you will never run out of hot water, thanks to its continuous flow technology. Available in Natural Gas and LPG, this water heater has a 6 star energy rating and comes with a 12 year warranty on the heat exchanger.

  • tickDimensions: 571H x 356W x 202D mm
  • tickSuitable for households with 1-2 shower outlets
  • tickEnergy Star Rating: 6.0 Equivalent
  • tick12 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 50°C
Make A Booking

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Suzan Dickson
Suzan Dickson
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Service Today also services air conditioners. Ours had not been serviced for many years and wasn't working very well. The serviceman was careful to cover the furniture below the air conditioner and was efficient and thorough. The air con is working much more efficiently now.
Rick Eastwood
Rick Eastwood
★★★★★
I hired Service Today as I have used them in the past to replace my HWS which they did the same day as I had reported it broken down. They are very efficient. In this instance I needed a wall mounted TV installed on my Pool patio wall. After quoting within the hour of my call we arranged an install date of today which they honoured and I am very happy with the result. Job No.373071
Carol Collins
Carol Collins
★★★★★
The electricians Fuad and Chris were very knowledge and did a thorough job. Both were extremely polite and courteous ringing me to let me know their estimated arrival time and keeping me informed of what they were doing to fix my problem. I would definitely recommend this service. Highly efficient and thorough.
Jacky Farag
Jacky Farag
★★★★★
I had my tap replaced today. Honestly it was a great and seamless experience with the gentleman that came and performed the service. He was super patient in deciding which tap I wanted and was quick to install it. Thanks ! We highly recommend this company.
Robert Frame
Robert Frame
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Very informative & made sure I understood new work. Even better than I expected. I am very happy with tradesmen approach to ensuring all work done correctly before leaving.

FAQs

Why is my hot water a funny colour?

Sometimes when a water heater gets old, it starts to rust from the inside. If you have noticed that your hot water is no longer clear, we recommend you call Service Today and have your hot water system inspected – before it becomes a much bigger problem.

What types of hot water systems are there?

Hot water systems come in various heating options including electric, solar, gas and electric heat pump.

What size water heater system should I buy?

There are various considerations you should make when selecting the hot water system to suit your needs such as:

  • How many people live in your home?

  • How much hot water does your household use and when during the day?

Getting the right hot water system to suit your needs is important, if your storage heater is too small you potentially will run out of water and will have to wait. However, on the other hand, if your storage system is too big for your requirements, the system will need to maintain the water’s temperature even when not in use, costing you a pretty penny. Never fear though, Service Today can help you select the right hot water system for your needs.

What are signs my hot water system needs a repair, replacement or service?

There are many signs that can indicate that your hot water system requires a replacement, repair or service, these include:

  • Any type of rust or sediment in your water.

  • Fluctuating water temperature.

  • A leak around your hot water system.

  • When the pilot light goes out too often or is not working at all.

  • Low or fluctuating water pressure.

  • Hot water runs out often.

  • Unusual banging or not normal sounds coming from your hot water system.

  • You have no hot water available.

If you are experiencing any of these issues contact our friendly team, so we can get you back into those cosy warm showers as soon as possible.

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