The ’10 Year System Cost’ comparison and the ‘Savings Calculations’ have been determined by factoring the following components:
The cost to produce hot water over 1 year, based on system efficiency and the price of power or gas*
The cost associated with increases to energy and gas prices over the lifetime of the system operation**
These guides should be used, only as a refernce point for potential savings, as household consumption and rate charges are unique to each installation.
* Energy consumption is baed on load comparision in a Zone 3 installation. Tariff Rates & Gas Prices have been calculated, by averaging supply charges, from multiple first tier providers and are accurate at time of publication. ** A 7% year on year increase in energy rates has been applied to reflect rising costs over the 10 year lifespan calculation.