O’Pro+ is highly user-friendly and adapted to comfort through its bottom control knob and flat chromed thermometer. The high-efficiency water inlet and CFC-free high-density insulation ensure energy savings as well > Well-designed with rounded lines and no visible fixation, the O’Pro+ is available in both horizontal and vertical models to match multiple interiors Extremely user-friendly thanks to an efficient temperature control adjustment knob, a mechanical thermostat, and a heating light indicator. These features ensure faster hot water delivery without wasting energy > Exclusive O’Pro technology increases tank lifetime