Coway Airmega 150 vs Rabbit Air BioGS 2.0
Two of the bedroom & small-room air purifiers in our best bedroom & small-room air purifiers: quietest levoit, coway, blueair & winix comparison, lined up spec by spec. Every figure comes from the manufacturer pages linked below, and the scores use the same published formula as the full ranking.
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Best for: A slim 153 CFM purifier, 6.5 in deep
Check price at AmazonBest for: Rabbit Air's 4-stage bedroom model
Check price at AmazonSpec-by-spec comparison
Green marks the better published figure. "Not listed" means the manufacturer doesn't publish it.
| Spec | Coway Airmega 150 | Rabbit Air BioGS 2.0 | Weight |
|---|---|---|---|
| Quietest settingThe lowest listed noise level, usually sleep mode. Under about 25 dB is near-silent in a bedroom. Shark and Honeywell don't list noise, so they score at the lowest published value in the category. | 19.98 dB | 22.8 dB | 30% |
| Smoke CADRSmoke CADR when listed (Levoit lists one headline CADR). About 100 CFM suits a 150 sq ft bedroom, and 160 CFM suits 240 sq ft. | 153 CFM | 136 CFM | 25% |
| Loudest settingTop-speed noise, for when you boost it after cooking or during pollen season. Left out when the maker lists only the minimum. | 48.3 dB | 48.6 dB | 15% |
| CADR per wattComputed by us: smoke CADR divided by rated power. A bedroom unit often runs all night, every night. | 4.4 CFM/W | Not listed | 10% |
| Carbon or odor stage includedYes when the included filter has an activated-carbon or deodorization layer, per the maker's page. | Yes | Yes | 10% |
| Main filter lifeThe maker's 'up to' life for the main filter. Usage assumptions vary by brand. | 12 months | Not listed | 10% |
| CADR (smoke / dust / pollen) | 153 / 161 / 220 | Not listed | info |
| Coverage | 214 ft² at 4.8 ACH; 1,035 ft² at 1 | Up to 625 ft² | info |
| Filter | Pre-filter + deodorization filter + HEPA | Not listed | info |
| Filter life | Deodorization 6 months, HEPA 1 year | Not listed | info |
| Noise | 19.98–48.3 dB(A) | 22.8–48.6 dBA | info |
| Power | 35 W | 120 V, 0.4 A max (watts not listed) | info |
| Depth | 6.5 in | Not listed | info |
| CADR (pollen / dust / smoke) | Not listed | 162 / 149 / 136 | info |
| Filtration | Not listed | Pre-filter, BioGS HEPA, activated carbon, negative ion generator | info |
| Warranty | Not listed | 5 years | info |
| AirPick score | 6.0/10 | 5.2/10 | 100% |
Where each one comes out ahead
Coway Airmega 150
Better published figure on: Quietest setting, Smoke CADR, Loudest setting.
What we like
- 20 dB low, 48 dB high
- 6.5 in deep
Watch out for
- Deodorization filter lasts 6 months
Rabbit Air BioGS 2.0
No scored spec where it is strictly ahead; its case rests on the strengths below.
What we like
- 5-year warranty
- Activated carbon
Watch out for
- Watts not listed
Verdict
Nearly the same quietest setting (22.8 vs 20 dB). Coway has more CADR (153 vs 136) and publishes watts; Rabbit Air has a 5-year warranty.
- Coway Airmega 150: Coway: Airmega 150
- Rabbit Air BioGS 2.0: Rabbit Air: BioGS 2.0