Hi All, great site . Need to replace my old positive showermate pump. This runs my thermo shower, bath and basin .My cold water storage cistern is approx two and abit feet above my shower head. Also the pump comes on when we draw hot from the kitchen mixer tap. After six years of use the pump needs replacing. I was told by technical support that i need a negative pump because of the mixer tap in the kitchen? Is this so ? Any help and guidance would be a great help , before i purchase something i dont need.