How many litres of solar water heater is required?

Are you considering installing a solar water heater but unsure about how many litres you need to meet your hot water requirements? Look no further! In this comprehensive guide, we will delve into the factors that determine the size of a solar water heater and help you choose the right capacity for your needs.

Understanding Your Hot Water Needs

Before determining the size of the solar water heater you require, it’s essential to understand your hot water usage patterns. Factors such as the number of people in your household, the frequency of hot water usage, and the specific applications (e.g., bathing, cooking, laundry) play a crucial role in determining the required capacity.

Calculating the Required Capacity

The general rule of thumb is 50 ltrs per person and that basis following is the recomanded capacity.

100 ltrs suitable for 2 to 3 member family, 150 ltrs suitable for 3 to 4 member family, 200 ltrs suitable for 4 to 5 member family, 250 ltrs suitable for 5 to 6 member family, 300 ltrs suitable for 6 to 7 member family, 500 ltrs suitable for 12 to 13 member family.

If more than 2 floor house add 50ltrs per floor.  for example if your house is 3 floor and 2 to 3 members usage, then you reuire 100 + 50 ltrs = 150 ltrs solar water heater.

Once you have determined your daily hot water usage, you can select a solar water heater with a corresponding capacity to ensure an uninterrupted supply of hot water.

Efficiency and Climate Considerations

In addition to the size of the solar water heater, factors such as the efficiency of the system and your geographical location also play a significant role in determining the system’s performance.

Areas with ample sunlight and higher average temperatures may require a smaller capacity solar water heater due to increased efficiency, while colder regions or locations with limited sunlight may necessitate a larger capacity to compensate for lower efficiency.

 Water Quality is most important in selecting the right solar water heater