Water heater appliance and a method for operating the same

A method of controlling the duration of hot water usage, the method comprising:

• providing cold water and hot water to a mixing valve;
• discharging water from the mixing valve at a selected temperature by mixing the cold water and the hot water;
• detecting the amount of hot water discharged;
• and
• restricting the flow of hot water through the mixing valve after a predetermined amount of hot water has been discharged within a predetermined time interval.

A hot water heater system comprising:

• a hot water tank having a heater, a cold water inlet line, and a hot water outlet line;
• a mixing valve fluidly coupled to the cold water inlet line and the hot water outlet line;
• a mixed water conduit configured to fluidly couple the mixing valve to at least one water consuming device;
• a controller operatively coupled to the mixing valve;
• and
• a flow detector operatively coupled to the hot water outlet line and the controller, the controller being operative in response to the flow detector to:
• detect an amount of hot water discharged during a predetermined time interval;
• and
• restrict the flow of hot water through the mixing valve after a predetermined amount of hot water has been discharged within the predetermined time interval.