We may earn a commission when you buy through our links. Rankings are formula-based and never paid for. As an Amazon Associate I earn from qualifying purchases. Disclosure

Coway Airmega 100

Ranked #10 of 24 in Best Bedroom & Small-Room Air Purifiers: Quietest Levoit, Coway, Blueair & Winix (2026). Here is every spec we scored, where it came from, and how it compares.

Affiliate disclosure: We earn a commission if you buy through links on this page, at no extra cost to you. It never affects our rankings, which come from the published scoring formula. As an Amazon Associate I earn from qualifying purchases. Learn more.

#10

Coway Airmega 100

Best for: A 108 CFM bedroom unit with a 1-year 3-in-1 filter

5.5/10

What we like

  • Single 1-year filter
  • 20 dB low

Watch out for

  • 108 CFM suits about 160 ft²

Score breakdown

Quietest setting 30%
Smoke CADR 25%
Loudest setting 15%
CADR per watt 10%
Carbon or odor stage included 10%
Main filter life 10%
Quietest setting20 dB
Smoke CADR108 CFM
Loudest setting48 dB
CADR per watt4.3 CFM/W
Carbon or odor stage includedYes
Main filter life12 months
CADR (smoke / dust / pollen)108 / 124 / 112
Coverage405 ft² at 2 ACH; 810 ft² at 1
Filter3-in-1 (vacuumable pre-filter + HEPA + deodorization)
Filter life1 year
Noise20–48 dB(A)
Power25 W
Weight6.6 lb
PriceCheck price
Check price at Amazon
Specs source:

How it compares

Open the full comparison table

Coway Airmega Halo
7.6/10
#1 · 17.8 dB in sleep mode, Energy Star
Blueair Blue Pure 411i Max
7.2/10
#2 · 19 dB on low, 46 dB on high
Coway Airmega Mighty2 (AP-1512N)
7.1/10
#3 · The Mighty's successor with a laser PM sensor
Blueair Blue Pure 511i Max
6.8/10
#4 · A 4.2 lb nightstand-size purifier
Blueair Blue Signature Small
6.7/10
#5 · The smallest Signature, 160 CFM
Blueair Blue Pure Mini Max
6.3/10
#6 · A 2.8 lb desk or nursery purifier
Levoit Eleva 300X
6.2/10
#7 · 20 dB sleep mode with separate HEPA and carbon filters
Coway Airmega 150
6.0/10
#8 · A slim 153 CFM purifier, 6.5 in deep
Coway Airmega Mighty2 Mini
5.9/10
#9 · A compact Mighty with 143 CFM
Coway Airmega AP-1512HH Mighty
5.5/10
#11 · The original Mighty: 233 CFM smoke
Rabbit Air BioGS 2.0
5.2/10
#12 · Rabbit Air's 4-stage bedroom model
Levoit Vital 100S
5.1/10
#13 · A 143 CFM purifier with HEPA-grade sleep mode
Levoit Sprout
4.8/10
#14 · A nursery purifier with ambient sounds and soft lighting
Winix T500
4.8/10
#15 · A 162 CFM Wi-Fi purifier with a 12-month carbon filter
Blueair Mini Restful
4.7/10
#16 · A purifier with a sunrise alarm clock
Levoit Core 300S
4.7/10
#17 · A compact 141 CFM Levoit at 23 W
Winix A230
4.6/10
#18 · A simple 360° purifier with no app
Levoit Core 200S
3.7/10
#19 · A 90 CFM purifier with a night light
Levoit Core Mini
3.3/10
#20 · A 2.2 lb desk purifier with aroma pads
Honeywell Allergen Plus AQSense HPA125
1.3/10
#21 · An Energy Star purifier for rooms up to 110 sq ft
Shark BreatheClear Compact Pro (HP062)
1.2/10
#22 · A small purifier with motion sensing and a 6-year filter
Shark NeverChange Air Purifier (HP152)
1.2/10
#23 · A 5-year-filter purifier for up to 650 sq ft
Molekule PECOAir
1.1/10
#24 · Molekule's PECO-HEPA purifier for bedrooms and offices