•Advantages of split solar water heater: oNo disorder water tank on roof oPerfect solar collector for domestic hot water heating system oCan be combined with existing energy source, such as gas, electric water heater and boiler oAuxiliary heating device: electric heater booster in tank, provides hot water in case of cloudy or rainy days oNo water inside tube, system can still in service even with several tubes breakage oCompletely automatic oCut out energy bills oHot water heating (on average) accounts for 26% of annual energy bill oGenerates enough solar energy to heat 70% of hot water