- Choose the correct unit size for your household need. Heating unused water in an oversized unit will waste electricity.

- Choose an instantaneous water heater instead of a storage water heater.

- Try not to use water heater when the weather is hot.

- If you are using storage water heater, just switch it on just a few minutes before use or switch. it on for about 20-30 minutes alternate days, instead of leaving it on all day.