SANDEN Heat Pump System
The SANDEN Heat Pump is the most efficient and environmentally-friendly hot water system on the market.
It features energy savings of up to 80% when compared to conventional electric hot water units, as well as 50% faster heat recovery when compared to other heat pump units.
This super-efficient, super-quiet, all-electric system provides reliable hot water throughout every day of the year: regardless of outdoor weather conditions; without electrical back-up assistance; and without gas. The SANDEN Heat Pump is capable of producing hot water at temperatures of up to 65oC, even when outdoor temperatures drop as low as -10oC, or as high as 43oC (making it perfectly suitable for the Canberra climate).
The SANDEN Heat Pump System is eligible for the highest number of Small-scale Technology Credits (STCs), meaning that as well as the ongoing energy savings, you can also expect immediate cash benefits the moment the system is installed.
The system has a 15 year design life and boasts class leading warranties, backed by 30 years of operation in Australia.
How it works
The SANDEN Heat Pump System operates like a refrigerator in reverse:
- The system contains a fan, which forces ambient air through an evaporator containing refrigerant (see AIR HEAT EXCHANGER in diagram). When the air passes through the evaporator, the refrigerant absorbs the available heat energy from the air and becomes warm.
- The warm gaseous refrigerant then flows through to the compressor. As it passes through the compressor, its pressure rises, as does its temperature.
- This hot refrigerant then passes through a heat exchanger, where all of its heat energy is used to heat the water.
- The water is pumped through into the storage tank and the refrigerant (now cooled) is passed through to the expansion valve (further cooling process), and now ready to absorb more heat energy, it begins the cycle again.
SANDEN's high-quality, long-life, duplex stainless steel storage tanks are well insulated, which makes for extremely low heat losses. The overall sound level of the system is about 38dB (somewhere between a whisper and the ambient sound of a library).
What sets the SANDEN Heat Pump System apart from other heat pump and refrigeration systems is its use of CO2 as the refrigerant (refrigerant R744).
The use of CO2 as a refrigerant is revolutionising the heat pump industry worldwide. R744 is a natural refrigerant, R744 (CO2), which is ozone friendly and has a far lower global warming potential than other commonly used and harmful fluorocarbons (see table). It's superior chemical properties means it also works at a higher efficiency, giving you more hot water for less electrical energy (and money).
When coupled with a solar PV power system, the SANDEN Heat Pump System becomes the competitive all-solar-electric alternative for low-E and Passive House buildings. The system also outperforms conventional solar-thermal hot water systems, particularly during the winter half of the year, when performance matters most.
Pricing (& available STC rebates)
Please note all prices are supply only (excluding delivery).
Small-scale Technology Certificates
All units are eligible for Small-scale Technology Certificates (STCs) in accordance with the Australian Renewable Energy Target (RET) scheme.
STCs are traded on the open market, and fluctuate accordingly. The number of available STCs varies according to postcode and tank size. The total available rebate on SANDEN Heat Pump Systems currently ranges from $900 to $1,300.
*An STC claim application must be submitted within 12 months of system purchase.
Common Misconceptions Surrounding CO2 Technology
- CO2 is a pollutant, therefore CO2 refrigerant (R744) is a harmful choice.
This is simply incorrect. Other commonly used refrigerants (fluorocarbons) today are actually far more harmful than CO2 (see table). So much so in fact, that CO2 is used as the basis for measuring Global Warming Potential (GWP) when comparing greenhouse gases.
For example: 1kg of R134a released into the atmosphere is the equivalent of 1.3 tonnes of CO2! The SANDEN Heat Pump System uses less than 1kg of CO2 in its refrigeration cycle.
- CO2 technology requires dangerously high operation pressures.
This is also not true. The high pressure side of the SANDEN Heat Pump System's operation cycle does not exceed a pressure of 140 bar (1 bar ~ 100kPa). By comparison, recreational scuba tanks operate at a maximum pressure of 200 bar, and your car's engine can reach pressures of around 2,000 bar during operation. The system also comes fitted with a safety pressure and temperature relief valve.
What is important is not the pressure that a system operates at, but the quality of material and mechanisms designed & built to withstand those pressures. SANDEN Heat Pumps are made to exceed international standards when it comes to pressure testing requirements.
- There is a lack of knowledgeable technicians in the area of CO2 systems.
Wrong. At LAROS alone, we are happy to recommend a number of qualified & experienced SANDEN Heat Pump technicians, who are able to install the system for you. The SANDEN Heat Pump System also arrives hermetically sealed, so that no further action is required on the unit's refrigeration circuit once it leaves the factory. Throughout the world, the popularity of CO2 technology is continuing to grow rapidly, due to its superior chemical properties and minimal environmental impact. As this industry grows, so too will the base of knowledge and experienced people surrounding it.
- CO2 technology is too expensive.
Like most intelligent energy-efficient technologies, there is often an increase in the initial cost, when compared to less effective products. It is important to keep in mind the vast energy savings you will receive over the course of the unit's lifetime: savings that will benefit your bank account, as well as our environment. Furthermore, SANDEN Heat Pumps are quick & easy to install, and require less maintenance, than other available hot water systems.
I just wanted to let you guys know the great news from some numbers I crunched last night. After the first full year since installing the Sanden Heat Pump hot water service, my electricity consumption against the average of the previous 6 full years has reduced by 32% and my electricity costs have reduced by 51%.” I suspect the difference between the consumption figure and the cost figure is due to the time of day variation in charges as well as the gradual lift in electricity prices over the last 8 years.Pat, Queanbeyan NSW
We recently installed a Sanden Heat pump. We chose Sanden for a number of reasons including it being quiet. However, we were astounded at how quiet it actually is. You had to listen hard to hear from only a few metres. It is amazing.Peter, Ainslie ACT
Further Sanden Heat Pump System testimonials are available from Product ReviewProduct Review (Australia)
I purchased a Sanden Heat Pump hot water system from Laros. I did not know much about heat pumps so needed a lot of advice. I cannot speak highly enough of all the staff who helped me through the entire process - from the initial enquiry right through to the installation. Everything went so smoothly. I used one of their recommended plumbers (Tim O'Shea) who did excellent work and tidied up afterwards. The Sanden has now been installed for nearly 6 weeks and we are very happy with our choice. The heat pump is installed immediately under the bathroom window (always closed), and when it is operating we can be in the bathroom and not even hear it. From my experience, I can definitely recommend Laros Technologies.Jan, Canberra ACT