SAIT 2nd Year Plumbing Practice Exam 2025 – Complete Study Resource

The primary function of instantaneous heaters is to produce hot water only when required. These heaters are designed to provide hot water on-demand, meaning they activate and heat the water as it flows through the unit. Unlike traditional systems that store hot water in a tank, instantaneous heaters eliminate the need for storage by heating water directly at the point of use. This allows homeowners and businesses to enjoy a continuous supply of hot water without the waiting time associated with traditional storage systems.

This functionality makes instantaneous heaters highly efficient, as they only consume energy when hot water is being used, resulting in lower energy costs. Additionally, since there's no stored water, the risk of running out of hot water is significantly reduced. This on-demand capability is particularly beneficial for applications such as showering or washing dishes, where immediate access to hot water is essential.