4 Things to Know About Replacing Your Pool’s Sacrificial Anode

Inspect the anode yearly, not on a fixed schedule Set a calendar reminder to check it once a year. A $20 anode is cheap insurance against corroding your heat exchanger or pump housing.

Replace it when less than half the original size remains If the anode looks like a chewed pencil stub, swap it. If it’s still chunky with some pitting, it’s fine.

Saltwater pools wear anodes faster than freshwater Higher conductivity in saltwater makes the anode work harder. Expect replacement every 3 to 5 years, but your water chemistry and usage will change the timing.

Find the anode near the pump or heater to inspect it Unscrew it and look. Don’t wait for a strict interval — inspect annually.