Save up to 80% of your electric storage hot water energy costs
Frequently Asked Questions
- Is the Sanden “Eco®” Hot Water Heat Pump System an energy efficient hot water system? How does it compare to a conventional electric hot water system?
- What are the benefits of the Sanden “Eco®” Hot Water Heat Pump System?
- How does a heat pump hot water system work?
- Which hot water system should I choose?
- I don’t understand the use of a CO2 refrigerant by the Sanden “Eco®” Hot Water Heat Pump System. Isn’t CO2 a greenhouse gas and therefore harmful to the environment?
- Why does Sanden “Eco®” Hot Water Heat Pump System use CO2 as a refrigerant?
- What is the noise level of the Sanden “Eco®” Hot Water Heat Pump System?
- What is the life expectancy of the Sanden “Eco®” Hot Water Heat Pump System?
- At what temperatures will the Sanden “Eco®” Hot Water Heat Pump System operate effectively?
- Can I operate the Sanden “Eco®” Hot Water Heat Pump System on Off-Peak Tariffs?
- What are RECs and STCs and what are they worth?
- Is water quality an important consideration for the Sanden “Eco®” Hot Water Heat Pump System ?
- What do I do if the Sanden “Eco®” Hot Water Heat Pump System has a problem?
- If I go away from the house, can I turn the hot water heat pump off?
- Do I need to register my warranty?
You can save up to 78% of your conventional electric hot water energy costs! The Sanden “Eco®” Hot Water Heat Pump System uses only 22% of the energy required by an electric storage hot water system.
Not only does a Sanden “Eco®” Hot Water Heat Pump System help save on energy costs, it also delivers:
- 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 30 years of operation in Australia.
(b) The Stainless Steel Storage Tank
- High quality, extra long life duplex stainless steel cylinder.
- Two x 315 litre Tank sizes to suit your space requirements (tall with a reduced diameter or short with an increased diameter)
- Fully insulated for extremely low heat loss
- Safety pressure and temperature relief valve
- Mains pressure rated
- Supplied with all plumbing fittings required to complete the installation including a tempering valve
3. How does a heat pump hot water system work?
The Sanden “Eco®” 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, CO2 (R744), 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.
Sanden has two hot water systems to choose from, model numbers GAUS–315EQTB and GAUS–315EQTC. The only difference between these is the physical size of the tank. The GAUS–315EQTC offers a tall, thin tank, while the GAUS–315EQTB offers a short, fat tank. Which one you choose depends on the space requirements of the location where you are installing it. Please speak to your Dealer/Installer about making the best choice for your location.
Yes, but CO2 has a Global Warming Potential (GWP – see below for explanation) of 1. Carbon dioxide is the baseline measurement of how it will contribute to global warming for a given mass.
Our system utilizes less than 1 kg of CO2 (R-744) as a refrigerant contained in a closed system at the factory. The installer does not need to charge the heat pump on site.
Global warming potential (GWP) is a measure of how much a given mass of greenhouse gas is estimated to contribute to global warming.. It is a relative scale which compares the gas in question to that of the same mass of carbon dioxide (whose GWP is by convention equal to 1). A GWP is calculated over a specific time interval and this time interval must be stated whenever a GWP is quoted or else the value is meaningless.
- 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).
The unit is rated at 38dB, which is almost silent. By comparison, a whisper is around 30dB and inside a library is approximately 40dB.
The Sanden HWHP has a design life of 15 years. The high quality, weather resistant construction of the “Eco®” Hot Water Heat Pump System outdoor module carries a warranty of 3 years, whereas the high quality, extra long life stainless steel storage tank carries a class leading 15 year warranty.
The Sanden HWHP will operate effectively between minus 10 and plus 43 degrees C. It is fitted with in built freeze protection, making it suitable for all climates.
Yes, please refer to p16 of the Owner’s Manual for details. There are no special settings for off peak connection. Simply ensure that the off peak tariff supplies a minimum of 5 hours continuous power to the Sanden HWHP.
The purchase and installation of a Sanden “Eco®” Hot Water Heat Pump System entitles you to Small-scale Technology Certificates (STCs) – formerly known as Renewable Energy Certificates (RECs). For more information: visit www.climatechange.gov.au and www.rec-registry.gov.au
The Sanden HWHP achieves the highest level of STCs of any hot water heat pump, currently available in Australia, and these are as below:
|Model||Zone 1||Zone 2||Zone 3||Zone 4|
Yes. Please refer to p11 of the Owner’s Manual for details. 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, it is recommended that water chemistry information be sought from your local council or water supplier.
Firstly, review the Trouble Shooting Guide on p8 of the Installation Manual. If still unresolved, please contact the Dealer/Plumber you purchased your unit from.
Yes you can. Turning off will not affect the unit. Just switch the power back on when you get back.
For efficient processing of warranty claims, should they arise, please register your Sanden “Eco®” Hot Water Heat Pump System here.