Just found out my water heater has a hidden anode rod that cost me $700

I had to replace my water heater last week after it started leaking at 8 years old. Before buying the new one, I did some reading and found out most tanks have a sacrificial anode rod that costs about $25 and takes 20 minutes to swap out. Apparently if you change it every 3 to 5 years, the tank can last 15 to 20 years instead of rusting out. I couldn't believe I never knew about this simple maintenance step. My plumber neighbor said he sees this all the time where people just let the rod dissolve and then blame the tank. Has anyone here actually checked their anode rod and extended their water heater's life?

2 comments

2 Comments

the_karen18d ago

and my neighbor been telling me this for years but i literally just ignored him until my tank started leaking all over my basement floor. seriously kicking myself now because that $700 couldve been avoided if i had just spent 20 minutes and 25 bucks every few years. the worst part is my old tank looked totally fine on the outside but the inside was completely rusted out from that rod being gone. i checked the new one i bought and sure enough there's a little hex head on top where you can swap it out easy. if you have a gas water heater yours probably has one too just look for that 6 sided nut on top of the tank. i'm telling everyone i know now because this seems like some secret plumber knowledge nobody shares.

the_elizabeth18d ago

Oh man I actually read about this not too long ago in some home maintenance blog. They called it a sacrificial anode rod and said it literally attracts all the corrosion so the tank itself doesn't rust out. Crazy that we just don't learn this stuff unless something breaks first. I checked mine after reading that article and the thing was like 80 percent gone just a skinny wire left. Replaced it for like thirty bucks at the hardware store.