Coway Airmega 250 Review — The Allergy Sufferer's Best Friend

Built for Allergy Sufferers

The Airmega 250 uses a 4-stage filtration system specifically designed for biological allergens:

1. Pre-filter (washable): Catches large particles, pet hair
2. Deodorization filter: Activated carbon for odors and VOCs
3. True HEPA: 99.97% capture of pollen, dust mites, mold spores
4. Ionizer: Charges remaining particles for better capture

Allergy Season Test

We ran the Airmega 250 during spring allergy season (pollen count: high) in a 500 sq ft open living/kitchen area:

• Week 1: Allergy sufferer reported 60% reduction in morning congestion
• Week 2: Noticeable decrease in dust on surfaces
• Week 4: Allergy medication usage dropped from daily to 2x/week

Coverage Area

With a CADR of 246 CFM, the Airmega 250 handles rooms up to 930 sq ft — enough for most open-concept living areas. This is significantly more coverage than similarly priced competitors.

The Air Quality Ring

A colored LED ring around the front indicates real-time air quality:

• Blue: Excellent
• Green: Good
• Yellow: Moderate
• Red: Poor

It responds within seconds to cooking, opening windows, or vacuuming. However, it can’t be dimmed, which is annoying in bedrooms at night.

Operating Costs

vs. Levoit Core 400S

Both are excellent. Choose Coway if you want: larger room coverage, 4-stage filtration, no app needed. Choose Levoit if you want: smart app control, lower price, smaller room.