Coway Airmega 250 review

The Airmega 250 is Coway's answer for rooms a little bigger than the Mighty can handle, and its strongest point is maintenance. A single Max2 filter combines activated carbon and HEPA, Coway rates it for one year, and a washable pre-filter catches hair and lint in front of it, so there is one part to order each year instead of two. Coway publishes a CADR of 249 smoke, 261 dust and 230 pollen and rates it for 465 sq ft at four air changes per hour. The noise range is 22 to 54 dB(A), with smart mode covering auto, sleep and eco settings and a rapid mode for fast cleaning. It draws 64 W and measures 18.5 by 19.7 by 8.3 inches, slim enough to sit against a wall. The catch is price: $399.00 buys only a slightly higher CADR than the $239.99 Airmega Mighty, and the 20.5 lb weight makes it a one-room unit.

Who it is for

living rooms up to 465 sq ft that want one yearly filter

Price

$399.00 on Coway's US store.

Airmega 250 $399.00 Regular price $399.00
Quoted from the vendor pricing page on November 13, 2026.

Key features

• CADR of 249 smoke, 261 dust and 230 pollen
• Rated for 465 sq ft at 4 air changes per hour
• Washable pre-filter plus Max2 activated carbon and HEPA filter
• Noise level of 22 to 54 dB(A)
• Smart mode with auto, sleep and eco, plus a rapid mode

Strengths and weaknesses

• Strength: One Max2 filter rated for 1 year covers both carbon and HEPA
• Strength: 22 dB(A) low setting
• Strength: 64 W power consumption
• Weakness: $399.00 is $159 more than the Airmega Mighty for a similar CADR
• Weakness: 20.5 lbs is heavy to move between rooms
• Weakness: Blueair's 211i Max has a much higher CADR at a lower sale price

Key facts

• CADR (smoke/dust/pollen): 249 / 261 / 230
• Room size: 465 sq ft at 4 ACH
• Noise: 22 to 54 dB(A)
• Filter life: Max2 filter, 1 year
• Weight: 20.5 lbs

Where it ranks

Coway Airmega 250 is No. 5 in our Best Air Purifiers verdict.