Efficient showerhead with purge outlet

A showerhead system comprising a first water valve controlled by water temperature and coupled between a hot water source supply inlet and a purge outlet wherein the first water valve is configured to selectively purge water from the hot water source supply inlet through the purge outlet instead of through a separate showerhead outlet, until a thermal actuator within the first water valve reaches a predetermined temperature, and to close the first water valve to water flow through the purge outlet when the thermal actuator rises to the predetermined temperature, directing the water to the showerhead outlet instead of the purge outlet.

A showerhead water flow controller comprising:

• a main body comprising a water source supply inlet, a purge outlet and a showerhead outlet separate from the purge outlet;
• and
• a first water valve controlled by water temperature and coupled between and controlling water flow between the water source supply inlet and the purge outlet, the first water valve comprising a thermal actuator within the first water valve configured to purge water from the water source supply inlet through the purge outlet instead of through the showerhead outlet and then to close the first water valve and stop a majority of water flow from the water source supply inlet to the purge outlet when the thermal actuator is heated up to a predetermined temperature.