How is the correct size of a hot water cylinder determined for a household?

The correct size of a hot water cylinder for a household is determined by considering the total hot water demand. This involves calculating the volume of hot water required for daily use based on the number of occupants, the types of fixtures in the home (such as baths, showers, and sinks), and the expected peak usage times.

Assessing the total hot water demand ensures that the cylinder can meet the needs of the household without running out of hot water during peak times. It allows for an understanding of both the quantity of water required and the necessary recovery rate of the system to refill and reheat water efficiently. This calculation provides a more comprehensive approach than merely assessing the number of bathrooms, heat loss, or property height, which can offer limited insight into actual water needs. This approach ultimately leads to a more adequately sized system that improves efficiency and user satisfaction.