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Sanden Eco Heat Pump Hot Water


Sanden Hot Water

Get a free quote from Pure Electric here

Pure Electric is your home for the Sanden Eco PLUS Heat Pump hot water system; Australia's leading renewable hot water service. Check out the Sanden YouTube video to see how it works!

Do you want to install the most efficient hot water service on the market that is built to last? Installing the most efficient heat pump in Australia will help your hip pocket as well as the environment.

Get your Sanden Eco Hot Water heat pump installed by our expert team. We offer a turnkey solution: uninstalling your existing tank, sending it for recycling and upgrading you to a Sanden Hot Water Heat Pump, Australia's most efficient hot water service.

Our local plumbers will make sure your hot water service is installed correctly and we will provide tips for maintenance that will keep your Sanden in good working order for years to come. 

Check out the Methven Kiri Low flow shower head video on our YouTube page

Why Choose a Sanden Eco Plus for your hot water service? 

✅ Highest efficiency heat pump in Australia - with a coefficient of performance (COP) of 6 or 600% efficient the Sanden Eco plus can save you up to 82% on your hot water energy costs!

✅ 15 year warranty on the water tank - Australian made, stainless steel and a 6 year warranty on the heat pump - no worries!

✅ Quietest hot water heat pump system in Australia, just 37dB - quieter than a library.

✅ Power your Sanden with your rooftop solar PV system - by running it from 11am using the “blockout timer”, this will save you money.  Find out how on our FAQ page or contact us and we will walk you through the process.

Check out our FAQ page here for Frequently Asked Questions about the Sanden Eco® PLUS Hot Water Heat Pump.

If you have a question about the Sanden Eco® PLUS Hot Water Heat Pump System not listed in our FAQ, please email us and we'll find the answer for you.

Technical Specifications

Sanden Eco Heat Pump FQS FQV 2019


How a heat pump hot water services works and why it is better than a regular hot water service

A heat pump is a solar energy harvesting device just like a rooftop solar PV system or old style rooftop solar hot water system. The difference is that a heat pump collects and concentrates the solar energy, in the form of warm air,around your home and deposits it inside the tank for you to use when required. Your Sanden heat pump hot water service gives excellent service and performance in all Australian weather conditions.

A CO2 heat pump performs well when older style rooftop solar hot water heaters don't. Normal household behaviour is to use more hot water in winter when it is also generally much more cloudy (a time when roof top solar heaters perform poorly), while the Sanden's performance stays consistent throughout the seasons in Australia's temperate climate. 

The Sanden Eco Hot Water Heat pump will reduce your energy by more than 90% when compared to an average gas storage hot water service and 80% when compared to an electric hot water service.

Federal and State government subsidies are available to help make your purchase affordable and accellerate your move to a pure electric house with a renewable hot water service. What's more - if you've got rooftop solar electric panels then you can schedule your Sanden to run during the day while your solar system is producing maximum power which also maximises the use of the solar energy you generate.

The Sanden is leagues ahead of all the other heat pumps in the Australian market, it uses technology that was developed under a program lead by the Japanese government, involving all the leading Japanese refrigeration companies, to build the most efficient kind of heat pump possible for the purpose of producing hot water at low temperatures.  The program was called "Ecocute" and involves using supercritical CO2 as the working fluid

The Sanden achieves more renewable energy certificates under the government's renewable energy promotion scheme than any other heat pump which is the strongest indicator of just how good a product it is.  Unlike all other heatpumps in the market the Sanden is so quiet that it's quieter than the noise in a library.

Don't waste your valuable rooftop space on an old style conventional solar hot water unit when you can put more solar electric panels in place. With conventional solar hot water in summer your system maybe losing hundreds of litres of our precious water resource daily due to overheating while a Sanden will produce just the right amount of water for your needs.

Talk to us now, for professional advice from our trained engineers. No gimmicks, no sales tactics just straight up and down best advice and service. We offer a fully integrated service to get you off old gas or conventional electric and on a pathway to energy efficiency and renewable energy freedom.  Starting with an efficient Sanden Eco CO2 hot water service we can eliminate your annual energy usage, saving you thousands on your bills and using our knowhow to upgrade you to the latest and most efficient solar powered lifestyle.

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Sanden Eco PLUS Easy Installation Manual

Sanden Eco PLUS Easy Installation Manual

Sanden Eco PLUS Easy Installation Manual
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Sanden Eco PLUS Heat Pump HWS GAUS-315QT GASU-315QS GAUS-25EQTB GS3-45HPA-AU Installation Manual

Sanden Eco PLUS Heat Pump HWS GAUS-315QT GASU-315QS GAUS-25EQTB GS3-45HPA-AU Installation Manual

Sanden Eco PLUS Heat Pump HWS GAUS-315QT GASU-315QS GAUS-25EQTB GS3-45HPA-AU Installation Manual
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Sanden Eco Heat Pump HWS EQTE G2 Air Removal

Sanden Eco Heat Pump HWS EQTE G2 Air Removal

Sanden Eco Heat Pump HWS EQTE G2 Air Removal
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Sanden Eco Heat Pump Hot Water Water Quality and Warranty

Sanden Eco Heat Pump Hot Water Water Quality and Warranty

Sanden Eco Heat Pump Hot Water Water Quality and Warranty
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Sanden Eco Heat Pump Brochure 2021

Sanden Eco Heat Pump HWS FQS FQV Brochure v2021

Sanden Eco Heat Pump HWS FQS FQV Brochure v2021
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Sanden Eco Heat Pump FQV Brochure

Sanden Eco Heat Pump FQV Brochure

Sanden Eco Heat Pump FQV Brochure
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Sanden Eco Heat Pump FQS Brochure

Sanden Eco Heat Pump FQS Brochure

Sanden Eco Heat Pump FQS Brochure
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Sanden Eco PLUS 8pp Brochure

Sanden Eco PLUS 8pp Brochure

Sanden Eco PLUS 8pp Brochure
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Sanden Eco Plus Heat Pump HWS EQTAQ Brochure

Sanden Eco Plus Heat Pump HWS EQTAQ Brochure

Sanden Eco Plus Heat Pump HWS EQTAQ Brochure
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Frequently Asked Questions

  • Yesfor efficient processing of warranty claims, should they arise, please register your Sanden Eco® Plus heat pump hot water system here.

  • Yes, importantly no warranty applies to the heat pump unit and the storage tank, where the chloride level exceeds 200 mg/litre and the pH is less than 6.0. If in doubt, seek water quality information from your local council or water supplier.

  • Check our comprehensive Sanden not working checklist here if you think you have a problem with your Sanden Eco heat pump hot water system.

    If you're still unsure after going through this guide - please lodge a Pure Electric Service Case here

  • What are STCs and how many do you get with your Sanden?

    The purchase and installation of a Sanden Eco® Plus Hot Water Heat Pump entitles you to Small-scale Technology Certificates (STCs) – formerly known as Renewable Energy Certificates (RECs). For more information: visit and

    The Sanden HWHP achieves the highest level of STCs of any hot water heat pump, currently available in Australia, and these are as below:

    To find out which zone your postcode is in click here (note this may change so if in doubt contact the clean energy regulator for more information)

    The Table below shows how many STCs are available for each Sanden model in each STC Zone 


    How much are STCs worth?

    STCs can be priced through the Government's STC clearing house or on the open market at places like Green Energy Markets

    So say you bought a Sanden GAUS-250FQS and you lived in zone 4 and the current STC price was $35

    The total discount you would receive would be: 34 STCs x $35 = $1,190. 

    So you would receive a discount of $1,190 off the total price of your Sanden unit (note this is an example only to illustrate how STCs are calculated the actual discount will vary depending on the current STC price).

  • The Sanden Eco® Plus heat pump hot water (HPHW) system operates like a refrigerator in reverse. It contains a fan that forces air through an evaporator that contains a refrigerant. The heat in the ambient air passes through the evaporator (note: even air below 0 º C contains heat energy) and is absorbed by a natural refrigerant, R744 (aka CO2), which is ozone friendly and does not significantly contribute to global warming compared with most other refrigerants (older style refrigerants have thousands of times more global warming impact for the same amount of gas, when compared with CO2).

    The warm gaseous refrigerant is circulated in the system via a compressor. As it passes through the compressor, its pressure rises, as does its temperature. This hot refrigerant then passes through a heat exchanger to heat the water, which is finally pumped to the storage tank.

    How a Sanden Eco Plus Heat Pump Hot Water services works


  • No, unlike other competitor heat pump hot water (HPHW) systems, the Sanden Eco® HPHW system does not require an electric booster element

  • The Sanden Eco Plus heat pump hot water (HPHW) system is designed to last for 15 years. The high quality, weather resistant Eco® Plus HWHP outdoor module carries a 6 year warranty and the extra-long life stainless steel storage tank carries a class leading, 15 year warranty.

  • Why does the Sanden use CO2 as its working gas, what is the benefit?

    • There is far less environmental impact (i.e. No ozone layer depletion and minimal global warming) than other commonly used refrigerants, should the system leak. 
    • There is a much higher efficiency, thereby allowing more heat to be transferred to the water, for less energy used (i.e. Excellent  thermodynamic ability).

    Isn't CO2 a greenhouse gas and therefor bad for the environment?

    While it is true that Carbon Dioxide (CO2) is a greenhouse gas it has a Global Warming Potential (GWP) of 1. Whereas refrigerant gases in other heat pumps can have GWP of over 10,000, which means if they leak to the atmosphere they contribute 10,000 times more to global warming compared with the refrigerant gases used in a Sanden Eco Plus. 

    The table below shows the GWP for some common refrigerant gases (note: GWP must include a time interval over which the greenhouse gases act, in this case 100 years)

    How Sanden delivers better Performance and Savings


    Our system utilizes less than 1 kg of R744 (CO2) as a refrigerant contained in a closed system at the factory.  The installer does not need to charge the heat pump on site.


What they are saying about us

Pure electric were patient and helpful when walking us through the hot water heat pump systems and the rebate process when our gas unit died suddenly right before Christmas last year. They prioritised...

Liana Tai

I've just had a Sanden heat pump hot water system installed by pure electric. The whole experience has been very good from initial quote right through to the installation. It's my second Sanden (had o...

Happy customer

I have a Sanden hot water heat pump installed by Pure Electric. They have always been extremely helpful and respond very promptly. I unreservedly recommend Pure Electric.


"Matthew from Pure Electric was helpful with all my enquiries about the heat pump system. \nOnce I had decided on the purchase, installation was arranged within two days.\nThe installers were professi...

Andre Rabe

"SANDEN 300L Heat pump hot water system.\n\nThe process of getting a quote for the installation of the SANDEN system was seamless. No questions where too hard and were answered promptly. The SANDEN ...


Spoke to Paul, and he went above and beyond to supply and install a Sanden Heatpump unit in Perth, before a business trip. The whole process was very smooth and any questions/concerns i had was easily...

Andrew T

"Very Happy with my solar and Sanden Heat pump installation, which is saving me significantly each month. Price was fantastic and service extremely efficient. Thank you to the team."

Edward - South Yarra

Purchased a Sanden hot water system from Pure Electric, delivery and installation completed with out a hitch. I'm extremely happy with this system, its very efficient and we never run out of hot water...


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