Importance

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Abstract

A method and an apparatus are provided for on-demand and instant warm water supplying at the point of consumption. In this method only cold water is distributed and supplied to different places within a building through a single piping system. The apparatus has only a single input pipe for cold water and heats water in a heating unit just as needed on demand at the point of consumption after harvesting the heat energy of wastewater from drainage. The heating unit alternatives are an electric resistive element, a magnetron generating microwave, or a thermoelectric body warming the input water as needed and no more through a controller. No hot and cold-water mixer is used. The method and apparatus help the building industry save on plumbing costs and consumed energy and water, while bringing more comfort to users through direct and local discharging of warm water on demand and as adjusted instantly.

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First Claim