Shakti water heater is really a very good water heater. We can use it for washing clothes as well by heating water.
We should switch on the water heater before use and switch it off immediately after use. We should use smaller size of water heater because elctricity consumed by water heater is dependent the amount of water is heated. We should use less hot water as saving water will also save elctricity.
We should avoid water heater is left switched on for long duration. We should also avoid unused hot water is left in the water heater.