Best air purifier for bedroom allergies: what to look for

For allergy relief, you want an air purifier that actually moves enough air through a real filter.

The 3 specs that matter

1) CADR (Clean Air Delivery Rate)

Higher CADR = faster cleaning for your room.

2) True HEPA filter

Look for “True HEPA” (not vague terms like “HEPA-like”).

3) Noise level

If it’s loud, you won’t run it at night.

Simple sizing rule

If you’re between sizes, buy the larger unit and run it on a lower, quieter setting.

Filter cost (don’t ignore)

Check replacement filter price and availability; that’s the ongoing cost.