Recoup specialise in Waste Water Heat Recovery Systems for showers (WWHRS). WWHRS is a simple heat recovery device that recovers the heat energy from waste shower water, using it to preheat mains cold water for use at the shower or water heater. Heat energy normally lost down the drain becomes reused: reducing hot water requirements; lowering CO2 emissions and bills. WWHRS can reduce energy requirements per shower by up to 55%.