It’s unlikely that you’ll find yourself without hot water. Still, to be on the safe side, choose a unit that has a fast rate of recovery. If members of your family enjoy taking long, leisurely hot showers daily, it will quickly reheat the water in its tank to your desired temperature. For instance, some units can heat 50L within 15 minutes. So, if you’re ever without hot water, you’ll get it back quickly!
You should look to get a tank that keeps 1.5 days capacity at all times. To find the perfect balance between lower electricity bills and your family’s need for hot water, follow these steps:
1. Count the number of people in your household and consider the people who might join or leave your household soon.
2. Assume that each person will use around 50 litres of hot water per day. (Modify if someone prefers cold showers or very long, very hot ones).
3. Require that your hot water tank keeps 1.5 days’ capacity at all times.
4. Thus, multiply the number of people by 75.
Some brands have a recovery rate of 100L/hr.