From: $4,680.50

Energy Savings with the Sanden Hot Water Heat Pump System

A Sanden Hot Water Heat Pump uses industry-leading technology found in refrigeration and air conditioning units, where energy is drawn in from the ambient atmosphere and transferred into heat. An Ozone friendly refrigerant R744 (CO2) absorbs the heat, which then flows into a compressor where it’s converted into a high-temperature gas. Then, it passes through a condenser within the water tank and the water is heated up. No backup elements are required.

The result is a system that requires radically less electricity to heat water when compared to conventional hot water systems. In fact, the initiative will save up to 80 per cent on a hot water bill, year after year. And no, it doesn’t involve cold showers!

Less energy, less impact on the environment, more savings.

The Sanden Hot Water heat pump system uses 1kW of energy to generate 5kW of heat; this is 80 per cent less energy compared to traditional hot water systems. When considering that electricity price hikes will continue to hit households year after year, it becomes the best, financially sustainable option on the market.

Available in four sizes:

  • 160 Litre
  • 250 Litre
  • 300 Litre
  • 315 Litre

Price includes plumbing quickie kit to make installation a breeze.


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Discover the Sanden Eco® Plus Hot Water Heat Pump System.

How does the Sanden Eco® Plus Hot Water Heat Pump System work?

The Sanden Eco® Plus Hot Water Heat Pump System works in a different way compared to a conventional electric hot water system. The Sanden Eco® Plus Hot Water Heat Pump 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 air passes through the evaporator and is absorbed by a natural refrigerant, R744 (CO2), which is ozone friendly and does not contribute to global warming.

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 Heat Pump Hot Water Systems Work

Performance & Savings

The Sanden Eco® Plus Hot Water Heat Pump System delivers:

  • Industry leading energy efficiency – uses only 20% of the energy required by an electric storage hot water system.
  • Innovative technology – up to 50% faster heat recovery than currently available hot water heat pumps.
  • Industry leading quality & performance, with the highest level of STC values of currently available hot water heat pumps.
  • Class leading warranties, backed by Sanden’s 35 years of operation in Australia.

As the Sanden Eco® Plus Hot Water Heat Pump System uses R744 (CO2) refrigerant technology, the amount of electrical energy required to heat the water is significantly less than that required by a conventional electric hot water system.

In fact, the Sanden Eco® Plus Hot Water Heat Pump System consumes 1kW of electricity to generate 4.5 kW of heat (COP = 5.0*), which equates to 20% of the energy used by a conventional electric system. Consequently, with the Sanden Eco Plus Hot Water Heat Pump System, you can save up to 80% of your conventional electric hot water energy costs!

Features & Benefits

The Sanden Eco® Plus Hot Water Heat Pump System is supplied as two separate components;

  1. Heat Pump Unit and
  2. Stainless Steel Storage Tank

This allows easy on-site handling and installation, as well as flexibility of the storage tank location, up to 15 metres horizontally or 5 metres vertically from the Heat Pump Unit. The system is suitable for a family of 3-6 people.

Heat Pump Unit

  • A high Coefficient of Performance (COP=5.0^) results in significantly reduced energy use and CO2 emissions
  • Up to 50% faster heat recovery than typical heat pumps. In ambient air of 20 ºC it takes approx 4 hours to heat 315 L of water from 17 ºC to 65 ºC
  • Uses unique Ozone friendly R744 (CO2) refrigerant
  • Simple installation by Plumber & Electrician, with no Refrigeration Mechanic required
  • An automatic heating cycle, which makes it perfect for use with off-peak power
  • Fitted with in-built freeze protection, making it suitable for all climates (-10 ºC to +43 ºC)
  • No backup element required
  • Whisper quiet operation, with industry leading noise level of 37 dB – very neighbour friendly!
  • High quality, weather resistant construction for outdoor location
  • 6 year Warranty

Stainless Steel Tank

  • 3 x tank sizes offered – 160L, 250L and 315L.
  • High quality, Australian made extra long life 316 Marine Grade stainless steel cylinder.
  • Fully insulated for minimal heat loss.
  • Mains pressure rated.
  • Safety pressure and temperature relief valve supplied.
  • 15 year Warranty


Whisper-quiet hot water

‘Whisper-quiet hot water’

When purchasing a hot water heat pump, noise levels are an important consideration. Sanden’s extensive research has delivered a ‘whisper quiet’ operating noise level (37dB) that ensures both you and your neighbours’ lifestyles remains unaffected by its operation.


The Sanden Eco® Plus Hot Water Heat Pump System has a 6 year warranty. The Stainless Steel Storage Tank has a class leading 15 year warranty, providing you with peace of mind when installing your Sanden Eco® Plus Hot Water Heat Pump System.

About Sanden

Sanden is a Japanese-owned global business, which has earned a solid reputation as a leader in the field of heating and cooling technology. Our focus is to improve the living standards of all Australians, via the development of environmentally-advanced products.

Sanden has more than 50 years experience in the production and global supply of air conditioning compressors. It has applied this advanced understanding of heat transfer technologies to the home environment, resulting in the development of the Sanden Eco® Plus Hot Water Heat Pump System. This highly innovative hot water system is manufactured in-house at Sanden’s ‘state-of-the-art’ factories in Japan.


ost savings achieved by a Sanden Eco® Plus Hot Water Heat Pump System versus a conventional electric hot water system.

This table presents electricity consumption figures recorded by a Sanden customer, who replaced his conventional electric Rheem Hot Water System with a Sanden Hot Water Heat Pump System, on 4.10.10. He lives in the Sydney Metro area, has a family of 4 people (ie. Husband, Wife & 2 x Children) using hot water and uses Off-Peak Controlled Load 2.

As can be seen, the reduction in usage achieved for the 2010/11 period, versus prior year, was approx. 80%, while the reduction in $ Cost for the same period was 77% and this was despite a change of supplier and a more expensive tariff (ie. increase of 18.7%).

Did you know that Heat Pump technology is more energy efficient than Solar?

During the period 2009 – 2013, the Campbell Creek Energy Efficient Home Project* compared the energy usage of three homes, each with different types of water heaters. Test results for the period January to December 2012, confirmed that the Solar Flat Panel system used 38% more energy than the Hot Water Heat Pump.


Hot Water Systems Energy Usage Comparisons

  • House 1 (CC1) – Electric, 50 gal capacity, EF=0.86, usage= 60 gal/day, set temp=120oF
  • House 2 (CC2) – Hybrid Electric Heat Pump Water Heater, 50gal, EF =2.4, set temp = 120oF, usage=60 gal/day
  • House 3 (CC3) – Solar Water Heater, 85 gal, EF =0.91, set temp = 120oF, 60 ft2 collector area, electric pumps, usage=60 gal/day

*Source :
More Information :

Weight 45 kg
Sanden Tank Size

160 Litre, 250 Litre, 300 Litre, 315 Litre


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