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.

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!’

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!

Therman 6 Star 20L Gas Continuous Flow Hot Water System

Thermann 6 Star 20L Natural Gas Continuous Flow Hot Water System – 50°C

The Thermann 6 Star 20L Gas Continuous Flow Hot Water System is a 6.5 Star energy efficient model, that delivers a continuous supply of hot water to your home. This model is ideal for homes with one to two bathrooms and its compact size makes it easy to install in tight spaces. Available in Natural Gas and LPG models, and includes a 12 year warranty on the heat exchanger.

  • tickDimensions: 520H x 350W x 200D mm
  • tickSuitable for homes with 1-2 bathrooms
  • tickEnergy Star Rating: 6.5 Stars
  • tick12 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 50°C
Therman 6 Star 20L Gas Continuous Flow Hot Water System

Thermann 6 Star 20L Natural Gas Continuous Flow Hot Water System – 60°C

The Thermann 6 Star 20L Gas Continuous Flow Hot Water System is a 6.5 Star energy efficient model, that delivers a continuous supply of hot water to your home. This model is ideal for homes with one to two bathrooms and its compact size makes it easy to install in tight spaces. Available in Natural Gas and LPG models, and includes a 12 year warranty on the heat exchanger.

  • tickDimensions: 520H x 350W x 200D mm
  • tickSuitable for homes with 1-2 bathrooms
  • tickEnergy Star Rating: 6.5 Stars
  • tick12 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 60°C
Therman 6 Star 20L Gas Continuous Flow Hot Water System

Thermann 6 Star 20L LPG Continuous Flow Hot Water System – 50°C

The Thermann 6 Star 20L Gas Continuous Flow Hot Water System is a 6.5 Star energy efficient model, that delivers a continuous supply of hot water to your home. This model is ideal for homes with one to two bathrooms and its compact size makes it easy to install in tight spaces. Available in Natural Gas and LPG models, and includes a 12 year warranty on the heat exchanger.

  • tickDimensions: 520H x 350W x 200D mm
  • tickSuitable for homes with 1-2 bathrooms
  • tickEnergy Star Rating: 6.5 Stars
  • tick12 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 50°C
Therman 6 Star 20L Gas Continuous Flow Hot Water System

Thermann 6 Star 20L LPG Continuous Flow Hot Water System – 60°C

The Thermann 6 Star 20L Gas Continuous Flow Hot Water System is a 6.5 Star energy efficient model, that delivers a continuous supply of hot water to your home. This model is ideal for homes with one to two bathrooms and its compact size makes it easy to install in tight spaces. Available in Natural Gas and LPG models, and includes a 12 year warranty on the heat exchanger.

  • tickDimensions: 520H x 350W x 200D mm
  • tickSuitable for homes with 1-2 bathrooms
  • tickEnergy Star Rating: 6.5 Stars
  • tick12 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 60°C
Therman 6 Star 26L Gas Continuous Flow Hot Water System

Thermann 6 Star 26L Natural Gas Continuous Flow Hot Water System – 50°C

The Thermann 6 Star 26L Gas Continuous Flow Hot Water System is a 6.1 Star energy efficient model, that delivers a continuous supply of hot water to your home. This model is ideal for homes with two to three bathrooms and its compact size makes it easy to install in tight spaces. Available in Natural Gas and LPG models, and includes a 12 year warranty on the heat exchanger.

  • tickDimensions: 520H x 350W x 200D mm
  • tickSuitable for homes with 2-3 bathrooms
  • tickEnergy Star Rating: 6.1 Stars
  • tick12 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 50°C
Therman 6 Star 26L Gas Continuous Flow Hot Water System

Thermann 6 Star 26L Natural Gas Continuous Flow Hot Water System – 60°C

The Thermann 6 Star 26L Gas Continuous Flow Hot Water System is a 6.1 Star energy efficient model, that delivers a continuous supply of hot water to your home. This model is ideal for homes with two to three bathrooms and its compact size makes it easy to install in tight spaces. Available in Natural Gas and LPG models, and includes a 12 year warranty on the heat exchanger.

  • tickDimensions: 520H x 350W x 200D mm
  • tickSuitable for homes with 2-3 bathrooms
  • tickEnergy Star Rating: 6.1 Stars
  • tick12 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 60°C
Therman 6 Star 26L Gas Continuous Flow Hot Water System

Thermann 6 Star 26L LPG Continuous Flow Hot Water System – 50°C

The Thermann 6 Star 26L Gas Continuous Flow Hot Water System is a 6.1 Star energy efficient model, that delivers a continuous supply of hot water to your home. This model is ideal for homes with two to three bathrooms and its compact size makes it easy to install in tight spaces. Available in Natural Gas and LPG models, and includes a 12 year warranty on the heat exchanger.

  • tickDimensions: 520H x 350W x 200D mm
  • tickSuitable for homes with 2-3 bathrooms
  • tickEnergy Star Rating: 6.1 Stars
  • tick12 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 50°C
Therman 6 Star 26L Gas Continuous Flow Hot Water System

Thermann 6 Star 26L LPG Continuous Flow Hot Water System – 60°C

The Thermann 6 Star 26L Gas Continuous Flow Hot Water System is a 6.1 Star energy efficient model, that delivers a continuous supply of hot water to your home. This model is ideal for homes with two to three bathrooms and its compact size makes it easy to install in tight spaces. Available in Natural Gas and LPG models, and includes a 12 year warranty on the heat exchanger.

  • tickDimensions: 520H x 350W x 200D mm
  • tickSuitable for homes with 2-3 bathrooms
  • tickEnergy Star Rating: 6.1 Stars
  • tick12 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 60°C
Rheem 27L Gas Continuous Flow Hot Water System

Rheem 27L Natural Gas Continuous Flow Water Heater – 50°C

The Rheem 27L Gas Continuous Flow Water Heater is a compact and efficient model, supplying a constant flow of hot water to large families with high hot water demands. Features remote temperature controller options, so you can set the temperature for your bathroom and kitchen. Suitable for homes with 3 bathrooms. Available in Natural Gas and LPG models, and comes with a 10 year warranty on the heat exchanger.

  • tickDimensions: 600H x 350W x 215D mm
  • tickSuitable for households with 4-6 people
  • tickEnergy Star Rating: 6.0 Stars
  • tick10 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 50°C
Thermann C7 Gas Continuous Flow Hot Water System

Thermann C7 26L Natural Gas Continuous Flow Hot Water System – 50°C

The Thermann C7 Gas Continuous Flow Hot Water System has been designed to reduce wasted energy by pre-heating water using heat from the gas exhaust; therefore using less energy and lowering your energy bills. This model is ideal for homes with two to three bathrooms, and ensures you will never run out of hot water. Available in Natural Gas and LPG models, and includes a 12 year warranty on the heat exchanger.

  • tickDimensions: 573H x 366W x 205D mm
  • tickSuitable for homes with 2-3 bathrooms
  • tickEnergy Star Rating: 7.3 Stars
  • tickDeveloped to reduce wasted energy
  • tick12 Year Warranty on Heat Exchanger
Rheem 27L Gas Continuous Flow Hot Water System

Rheem 27L Natural Gas Continuous Flow Water Heater – 60°C

The Rheem 27L Gas Continuous Flow Water Heater is a compact and efficient model, supplying a constant flow of hot water to large families with high hot water demands. Features remote temperature controller options, so you can set the temperature for your bathroom and kitchen. Suitable for homes with 3 bathrooms. Available in Natural Gas and LPG models, and comes with a 10 year warranty on the heat exchanger.

  • tickDimensions: 600H x 350W x 215D mm
  • tickSuitable for households with 4-6 people
  • tickEnergy Star Rating: 6.0 Stars
  • tick10 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 60°C
Thermann C7 Gas Continuous Flow Hot Water System

Thermann C7 26L Natural Gas Continuous Flow Hot Water System – 60°C

The Thermann C7 Gas Continuous Flow Hot Water System has been designed to reduce wasted energy by pre-heating water using heat from the gas exhaust; therefore using less energy and lowering your energy bills. This model is ideal for homes with two to three bathrooms, and ensures you will never run out of hot water. Available in Natural Gas and LPG models, and includes a 12 year warranty on the heat exchanger.

  • tickDimensions: 573H x 366W x 205D mm
  • tickSuitable for homes with 2-3 bathrooms
  • tickEnergy Star Rating: 7.0 Stars
  • tickDeveloped to reduce wasted energy
  • tick12 Year Warranty on Heat Exchanger
Rheem 27L Gas Continuous Flow Hot Water System

Rheem 27L LPG Continuous Flow Water Heater – 50°C

The Rheem 27L Gas Continuous Flow Water Heater is a compact and efficient model, supplying a constant flow of hot water to large families with high hot water demands. Features remote temperature controller options, so you can set the temperature for your bathroom and kitchen. Suitable for homes with 3 bathrooms. Available in Natural Gas and LPG models, and comes with a 10 year warranty on the heat exchanger.

  • tickDimensions: 600H x 350W x 215D mm
  • tickSuitable for households with 4-6 people
  • tickEnergy Star Rating: 6.0 Stars
  • tick10 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 50°C
Thermann C7 Gas Continuous Flow Hot Water System

Thermann C7 26L LPG Continuous Flow Hot Water System – 50°C

The Thermann C7 Gas Continuous Flow Hot Water System has been designed to reduce wasted energy by pre-heating water using heat from the gas exhaust; therefore using less energy and lowering your energy bills. This model is ideal for homes with two to three bathrooms, and ensures you will never run out of hot water. Available in Natural Gas and LPG models, and includes a 12 year warranty on the heat exchanger.

  • tickDimensions: 573H x 366W x 205D mm
  • tickSuitable for homes with 2-3 bathrooms
  • tickEnergy Star Rating: 7.3 Stars
  • tickDeveloped to reduce wasted energy
  • tick12 Year Warranty on Heat Exchanger
Rheem 27L Gas Continuous Flow Hot Water System

Rheem 27L LPG Continuous Flow Water Heater – 60°C

The Rheem 27L Gas Continuous Flow Water Heater is a compact and efficient model, supplying a constant flow of hot water to large families with high hot water demands. Features remote temperature controller options, so you can set the temperature for your bathroom and kitchen. Suitable for homes with 3 bathrooms. Available in Natural Gas and LPG models, and comes with a 10 year warranty on the heat exchanger.

  • tickDimensions: 600H x 350W x 215D mm
  • tickSuitable for households with 4-6 people
  • tickEnergy Star Rating: 6.0 Stars
  • tick10 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 60°C
Thermann C7 Gas Continuous Flow Hot Water System

Thermann C7 26L LPG Continuous Flow Hot Water System – 60°C

The Thermann C7 Gas Continuous Flow Hot Water System has been designed to reduce wasted energy by pre-heating water using heat from the gas exhaust; therefore using less energy and lowering your energy bills. This model is ideal for homes with two to three bathrooms, and ensures you will never run out of hot water. Available in Natural Gas and LPG models, and includes a 12 year warranty on the heat exchanger.

  • tickDimensions: 573H x 366W x 205D mm
  • tickSuitable for homes with 2-3 bathrooms
  • tickEnergy Star Rating: 7.0 Stars
  • tickDeveloped to reduce wasted energy
  • tick12 Year Warranty on Heat Exchanger
Therman 6 Star 16L Gas Continuous Flow Hot Water System

Thermann 6 Star 16L Natural Gas Continuous Flow Hot Water System – 50°C

The Thermann 6 Star 16L Gas Continuous Flow Hot Water System is a 6.3 Star energy efficient model, that delivers a continuous supply of hot water to your home. This model is ideal for homes with one bathroom and its compact size makes it easy to install in tight spaces. Available in Natural Gas and LPG models, and includes a 12 year warranty on the heat exchanger.

  • tickDimensions: 520H x 350W x 200D mm
  • tickSuitable for homes with 1 bathroom
  • tickEnergy Star Rating: 6.3 Stars
  • tick12 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 50°C
Therman 6 Star 16L Gas Continuous Flow Hot Water System

Thermann 6 Star 16L Natural Gas Continuous Flow Hot Water System – 60°C

The Thermann 6 Star 16L Gas Continuous Flow Hot Water System is a 6.3 Star energy efficient model, that delivers a continuous supply of hot water to your home. This model is ideal for homes with one bathroom and its compact size makes it easy to install in tight spaces. Available in Natural Gas and LPG models, and includes a 12 year warranty on the heat exchanger.

  • tickDimensions: 520H x 350W x 200D mm
  • tickSuitable for homes with 1 bathroom
  • tickEnergy Star Rating: 6.3 Stars
  • tick12 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 60°C
Therman 6 Star 16L Gas Continuous Flow Hot Water System 2

Thermann 6 Star 16L LPG Continuous Flow Hot Water System – 50°C

The Thermann 6 Star 16L Gas Continuous Flow Hot Water System is a 6.3 Star energy efficient model, that delivers a continuous supply of hot water to your home. This model is ideal for homes with one bathroom and its compact size makes it easy to install in tight spaces. Available in Natural Gas and LPG models, and includes a 12 year warranty on the heat exchanger.

  • tickDimensions: 520H x 350W x 200D mm
  • tickSuitable for homes with 1 bathroom
  • tickEnergy Star Rating: 6.3 Stars
  • tick12 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 50°C
Therman 6 Star 16L Gas Continuous Flow Hot Water System

Thermann 6 Star 16L LPG Continuous Flow Hot Water System – 60°C

The Thermann 6 Star 16L Gas Continuous Flow Hot Water System is a 6.3 Star energy efficient model, that delivers a continuous supply of hot water to your home. This model is ideal for homes with one bathroom and its compact size makes it easy to install in tight spaces. Available in Natural Gas and LPG models, and includes a 12 year warranty on the heat exchanger.

  • tickDimensions: 520H x 350W x 200D mm
  • tickSuitable for homes with 1 bathroom
  • tickEnergy Star Rating: 6.3 Stars
  • tick12 Year Warranty on Heat Exchanger
  • tickTemperature Preset: 60°C

Over 215,000 Happy Customers

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Rated 4.8 Stars - 5600+ Reviews
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
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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
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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
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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.
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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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