Part 5/9:
By using approximately 1 to 2 liters per minute instead of the typical 4 to 6 liters from standard faucets, a household can save substantial amounts of water daily—up to 40 liters per person—and realize significant savings annually. Even taking into account the initial product cost of around €8, the return on investment becomes apparent through reduced water bills.
When scaling the comparison to energy use, Michael points out that although gas is traditionally cheaper than electricity, the reduced volume of hot water needed when using POU systems offsets some of those costs. After performing calculations, he estimates that switching to an electric POU heater can lead to considerable savings in natural gas consumption, demonstrating the efficiency of electric heating versus gas.