One of the main factors considered when selecting a hot water system for a new building is the?

Selecting a hot water system for a new building primarily revolves around understanding the quantity of hot water required. This demand dictates the size and type of the hot water system needed to ensure that all fixtures and appliances receive sufficient hot water to function effectively.

Assessing the quantity of hot water required ensures that the chosen system meets the daily needs of the occupants while allowing for peak usage times. This includes considering factors such as the number of bathrooms, kitchen facilities, laundry appliances, and any other fixtures within the building that will consume hot water.

When the appropriate quantity is determined, it allows for the selection of a system that can efficiently deliver the required volume without over-sizing or under-sizing, which can lead to operational inefficiencies or discomfort. This consideration is fundamental before moving on to aspects like the type of fuel source, installation costs, or energy efficiency ratings, as those factors may vary based on the water demand established.