On average, we open taps 9000 times per person a year. Each time, new water fills the pipes. Then it only takes a short while for hot water to cool down or cold water to warm up once the tap is turned off. This is annoying and a huge waste of energy and water.
There are methods available that overcome this problem for example, constantly circulating hot water in the system. However, this still wastes a huge amount of energy as it as it takes energy to circulate and heat is lost in the process.
3eflow has developed a system that ensures pipes are empty when not in use. When the tap is opened water is supplied instantly to the spout. This means pipes are empty 99% of the time.