The size of the storage tank to be installed depends most on?

The size of the storage tank is critically determined by the peak demand for hot water in the building. This concept is rooted in the need to ensure that the hot water system can meet the maximum volume of hot water required during the times of highest usage. When sizing a storage tank, it's essential to consider factors such as the number of fixtures that will use hot water simultaneously and the rate at which hot water is consumed.

When peak demand is identified, the storage tank must be able to provide sufficient hot water without running out, thus avoiding discomfort or interruption in service. Therefore, understanding the peak demand helps in effectively calculating the required tank size to accommodate usage patterns within the specific environment.

While total volume, type of water heater, and geographical location can influence hot water system design, they are secondary to peak demand. Total volume might refer to the capacity of the tank but does not ensure that it can meet peak demands. The type of water heater has implications for efficiency and performance, but it does not dictate how much hot water will be used at any given time. Geographical location may affect water temperature and heating efficiency but does not directly influence the tank size needed based on demand patterns.