The Lochinvar and A.O. Smith 100293703 Energy Smart to Standard Conversion Kit is a replacement accessory designed to convert compatible Energy Smart water heaters to standard control operation. It modifies the existing control configuration to support conventional water heater functionality, allowing the unit to operate with compatible standard controls. This kit is used in compatibl... https://www.partshnc.com/100293703-lochinvar-ao-smith-conv-4040-energy-smart-to-std