Doug Lassiter
Well-Known Member
Let's talk anode rods. I am aware that anode rods prevent corrosion to the water heater tank. 'Nuff said. But WHAT corrosion? My water is high pH (9.0 or so) and a low-middling mineral (carbonate, from limestone) content. That's why they raise the pH, to precipitate out a lot of the minerals. Is anode-rod servicing of importance in this case? What specific properties of water produce the corrosion that anode rods are supposed to deflect? I just got a new water heater, but my old one was going strong after almost 20 years with no anode rod replacement.