Run a HEPA air purifier in the bedroom continuously

What to Do

Place a true HEPA air purifier in your bedroom and run it continuously during allergy season. Size the unit to your room (minimum CADR of 2/3 the room's square footage).

Why It Works

True HEPA filters remove 99.97% of particles 0.3 microns and larger. Pollen grains are 10-100 microns — easily captured. Since you spend 6-9 hours in the bedroom, making it the cleanest room provides disproportionate benefit. Multiple studies confirm HEPA filtration reduces indoor allergens and improves symptoms.

Tips

• Recommended models: Coway AP-1512HH, Blueair Blue Pure 211+, Levoit Core 400S
• Position with unobstructed airflow (not behind furniture)
• Change filters per manufacturer schedule (typically every 6-12 months)
• Avoid ionizers and ozone generators — they are less effective and produce lung irritants