Most activated carbon filters need replacing every 3–6 months. I know, I know—it feels like a scam, like printer ink all over again. But if you don’t swap it, the carbon gets “full,” and then it just… stops working. Worse, it can release trapped gunk back into your water. Yum.
Here’s a good rule of thumb: if you notice a funky taste or low water flow again, it’s time. Or just mark your calendar and pretend you’re a responsible adult.
Korgen - Activated Carbon Filters | Water Filtration Plants
Types of carbon filters (Because one size doesn’t fit all)
You’ve got granular activated carbon (GAC), which looks like black sand. It’s cheap and great for bigger particles, but it can channel water through gaps, missing some stuff. It’s like trying to stop a leak with a colander—occasionally effective.
Then there’s carbon block. This is carbon pressed into a solid brick. It’s denser, lasts longer, and catches more contaminants. Way more efficient. But it also slows down water flow, so your filter pitcher might take forever to fill. You win some, you sip slow.
