@repairmyhotwater
Sized according to the amount of people in the family Simply said, the bigger the tank, the more people there are in the house. You will always run out of hot water if it is too little. If it’s too huge, you’ll be spending money because it’ll waste energy keeping water temperature for a lot of water that won’t be used. A 250–315L tank is typically required for a relatively water-efficient family using an off-peak system.