The efficiency of gas powered water heaters is required to be increased by 10% per U.S. government regulations. Rheem has developed a powered damper that achieves this efficiency standard but poses high cost burdens and installation challenges for the customer. Rheem has tasked the D-Rheem team with developing a non-powered damper that maintains the same functionality but without the need for an external power source. The D-Rheem team has developed two solutions including a pressure actuated diaphragm that uses the existing natural gas pressure to provide the necessary torque to rotate the damper, and a thermoelectric generator (TEG) design that uses the high temperature exhaust gasses to generate electric power, charging rechargeable batteries to power a small DC motor. The D-Rheem team is excited to showcase the prototype solutions and hope to see you at Table R6!