RIWH6 is a compact inline instantaneous water heater, ideal for hand washing. The 6kW bare wire heat exchanger gives rapid response water heating, and with no stored heated water or wasted energy, an A energy efficiency performance rating. This very compact water heater is suitable for a single outlet supply and is simply installed inline under or adjacent to the hand wash basin. It requires no controls or special accessories as the heater it is flow activated by the opening of the hot water tap.