About the Eco Plus
Sanden's site describes Japanese-made heat pumps and marine grade stainless steel tanks. Heat is absorbed by R744, which is CO₂, a natural refrigerant.
Sanden says it has been operating in Australia for over 45 years.
What the warranty asks of you
- Two licensed trades. It must be installed by both a licensed plumber and a licensed electrician.
- The manual. Not installing or maintaining it to the installation manual may void the warranty.
- Water. No warranty applies to the heat pump or the tank where the water's pH is below 6.5 or above 8.0.
- Authorised repairs. Only an authorised Sanden dealer or installer can do warranty work.
- Proof. Dated proof of purchase is needed before any warranty work starts.
- Speed. Claims must be made within one month of finding the defect.
- First owner. Warranty service is for the original owner only.
Rainwater and switching supplies
Sanden recommends testing rainwater before you connect it. It also says switching between water supplies can have a detrimental effect, so tell the plumber if your house moves between tank and mains water.
Ask the installer
- Are you an authorised Sanden dealer or installer, and who does the electrical work?
- Has my water been tested, or should I arrange it?
- Where will the heat pump unit and the tank go?
- If something fails, who do I call first?
- What happens to the warranty if I sell the house?
What we would do
Write down the day the system goes in, keep the dated receipt, and act quickly if anything goes wrong: Sanden wants claims within a month of spotting a defect. On rainwater, get it tested before the install, not after. And book an authorised Sanden installer, since warranty work has to go through one. A plumber who specialises in hot water can tell you whether they're authorised.