These days, everyone cares about clean air—those tiny floating particles mess with allergies and lungs. Air filters are everywhere for a reason, but do you know the key stuff about medium-efficiency ones? Let’s keep it simple.
Medium-efficiency filters are super common—offices, malls, hospitals, even homes use ’em. Their main job? Grab dust, pollen, and other gunk out of the air. The big question: what size particles do they catch?
Most trap particles 5 microns or bigger. To picture that: it’s about the thickness of a human hair, or those dust specks you see in sunlight. I swapped my home’s cheap filter for one of these last year, and I dust way less now—they really work.

They’ve got perks too: 80%+ filtration efficiency, way better than basic filters. And they don’t block airflow like cheap ones—my AC no longer hums nonstop. Plus, they last 6–12 months, so no monthly replacements.
Picking one? Match it to your space: standard 5-micron works for most rooms; go higher precision if you have bad allergies. Always check size—don’t be like me, buying one that’s too big for the AC. Stick to trusted brands (no random discount ones!) and replace when it’s gray with dust.
Bottom line: medium-efficiency filters are reliable for 5+ micron particles. Pick the right size, avoid duds, and swap on time—your lungs (and dust cloth) will thank you.

