• Jun 7, 2026 rheem 21v40 38 water heater manual ues. What maintenance procedures are recommended in the Rheem 21V40-38 water heater manual? Regular maintenance includes flushing the tank annually, inspecting the anode rod, checking for leaks, and testing temperature and pressure relief valves as outlined in the manual. Can I install the R By Shirley Stiedemann DDS
