Turn off hot water when on holiday. Your hot water will cool down, but you’ll save up to $0.35/day.
Depending on the model, if a modern dishwasher is fully loaded, it can use much less water than hand washing. Efficient dishwashers can use around 1-1.5 kilowatt-hours and 14 litres (around a sink full) of water to wash 12 place settings of dishes. You'd typically need several times this amount of water to hand wash the same dishes. Save Energy
Water heating can account for between 14-25% of a home's energy consumption.