Hello, We appreciate your feedback. We are sorry for the inconvenience you have experienced. This shower panel is a Direct Connect design. Direct Connect panels require connection to separate hot and cold water supply lines. It replaces any mixing valve currently being used. We also offer Easy Connect shower panels. They connect to a pre-existing showerhead pipe outlet and pre-existing temperature controls are used. Please contact us directly and we will gladly assist you with a solution to any difficulties. Kind regards, Support