... real terminal heating mode,no preheating,no heat preservation,no pipe heat loss.However,by using ordinary storage water heater,the pipe heat loss ... 10% to 15%.2.Save water:Ordinaty storage water heater pipe laying a long,and pipe out the cold water will waste 1-1.5L ... lose 20-100L,and this product by use real terminal heating pipe water without losing any.3.Save worry:24 hours a day ...