Not yet; planning on doing so.There must be something in your water causing this. We have lived in this house 45 years, and are on our third water heater. The first was electric, just a builder grade, that came with the house. We replaced it in the late 80's when natural gas became available in this area, it was still working. We are on the second gas water heater, and it seems to be in good shape. I have never flushed any of these water heaters. have you had your water analyzed to see why it corrodes these water heaters so fast?