a) waste the cold water present in the pipes to the drains, which represents a waste of +/- 10 gal / day per family (a waste of +/- 15 M³ of water year).
b) waste a lot of energy by installing a looping of the hot water circuit with a circulating pump.
For comfort of the looping of the hot water you waste 10 to 20% of the building's energy consumption.
c) use this new type of ecological faucet that allows you to have hot water very quickly without wasting any water or energy.
Thermostatic shower faucet allows even with a loop via the shower head, to place yourself under the shower before opening the tap without fear of receiving a drop of cold water.