YSK: water heaters have an anode rod that prevents the tank from corroding. If you replace it every few years, it will extend the life of your water heater from ~10 years to potentially 25+ years.
from /r/YouShouldKnow
YSK: water heaters have an anode rod that prevents the tank from corroding. If you replace it every few years, it will extend the life of your water heater from ~10 years to potentially 25+ years.