What constitutes an appliance in plumbing?

An appliance in plumbing is primarily defined as any device that utilizes fuel or raw materials to produce heat, which typically includes items such as water heaters, boilers, or furnaces. These appliances are essential for providing heated water or space heating in residential and commercial settings, thus playing a crucial role in the overall plumbing system.

A fixture designed for water supply focuses on items like sinks and faucets, which differ from appliances in their primary function as points of water delivery rather than heat generation. Furthermore, a special type of drainage system pertains to waste removal, which is outside the scope of what is classified as an appliance. Lastly, a part of the water distribution system is more about the infrastructure that delivers water, such as pipes and valves, rather than a device that generates heat. Therefore, the definition of an appliance encompasses devices that are integrated into plumbing systems for purposes related to heating and temperature control.