3E Flow works by drawing water out of the pipe when a tap is turned off, returning it to the tank or heat exchanger, leaving an empty pipe. The moment a tap is opened water is delivered directly to the tap. This happens so quickly the effect is instant hot or cold water.
Pipe length of conventional hot water recirculation with energy losses can be replaced by 3E Flow to about 80% in all sorts of buildings. Out to each tap, 3E Flow monitors and controls the tap water system with an app for flow measurement, water security etc.