I bought a 50 gal G12 water heater from Lowe’s two years ago because it had a 12 year warranty. It suffered a catastrophic tank and controller failure. Took me three days to get to a human as I waited on three calls for an hour each. Got a RMA number to swap it out at Lowe’s. I had to remove and return it myself. I got the newer model as a replacement. I installed it and fired it up. As soon as the water warmed up and pressure came up, the tank started leaking water all over the heating element! I can watch the water run down via the viewing glass. I will now have to call Lowe’s for yet endothermic unit and installation. I could NEVER recommend AO Smith to anyone. Quite frankly, they are just awful. My old sears unit lasted 25 years!