Water should not be overheated more than necessary (each 10°C rise in DHW temperature increases the energy consumption by around 15%). To save energy, it is recommended to adjust the thermostat of DHW at 60°C (this temperature should not be reduced to avoid problems of formation of legionella).
The savings potential depends on the building’s water consumption. Savings of up to 30% of the electricity consumption dedicated to heat the water can be obtained
Operation and Maintenance (O&M) staff size, skill level, and budget need to be considered