Replacement Part Numbers 93866 Thermal Cutoff & 91447 ECO Thermostat Assembly Kit What this kit does Replaces the factory thermal cutoff and ECO thermostat assembly to restore temperature control and overheat protection in compatible A*wood gas/electric EXT water heaters. Prevents uncontrolled heating by cutting power when temperatures exceed safe limits and restores reliable thermostat operation for accurate temperature regulation. Key benefits Safety: Restores the unit's builtin overheat protection to reduce risk of damage or unsafe operation. Reliability: Direct replacement for the listed part numbers to match original fit and function. Convenience: Simple swapout replacement — minimal tools required and stepbystep videos are available to guide installation. Compatibility (fits these A*wood Gas/Electric EXT models) G6A3E/4E/6E/7E/8E GH63E/4E/6E/7E/8E GCH64E/6E/7E GCH6A7E/8E/9E/10E GC6AA7E/8E/9E/10E G101E/2E/3E GC101E/2E GC10A2E/3E/4E GH101E/2E/3E GCH10A2E/3E/4E G6103E GC6A7E GH6103E WH9EXT G9EXT GE9EXT GEH9EXT G16EXT GE16EXT GEH16EXT Features and performance Function: Combines a thermal cutoff (safety shutoff) and ECO thermostat assembly to manage temperature limits and prevent overheating. Fit: Designed as a direct replacement for the listed part numbers and models for straightforward installation and correct operation. Performance: Restores factory temperature sensing and safety trip behavior without requiring modification to your water heater. Typical applications / use scenarios a failed thermostat assembly after your water heater no longer holds set temperatures or trips repeatedly. Restore safety protection after a thermal cutoff has triggered and will not reset. Preventive maintenance on older EXT series water heaters to ensure reliable temperature control and continued overheat protection. Installation notes Installation is straightforward for anyone familiar with basic appliance electrical and plumbing safety. Power must be disconnected before starting. Follow manufacturer instructions or online installation videos for stepbystep guidance. If you are not comfortable working on water heaters, have a qualified technician perform the replacement. Important: Please verify Please doublecheck the product pictures, the replacement part numbers (93866 and 91447), and the model compatibility list to confirm this kit is the correct part for your unit before ordering.