How to choose the right hot water system for your Sydney home.
Electric storage cheapest to buy at $700-$1,500 but most expensive to run.
Gas storage and continuous flow provides unlimited hot water.
Solar hot water highest upfront cost but lowest running costs with government rebates.
Heat pump uses 60-75 percent less electricity with government rebates available.
Sizing guide: 1-2 people need 125L electric or 16L per min continuous flow.
3-4 people need 250L electric or 20L per min.
5 plus people need 315-400L electric or 26L per min..