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Blueair Blue Signature Small

Ranked #5 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.

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B

#5

Blueair Blue Signature Small

Best for: The smallest Signature, 160 CFM

6.7/10

What we like

19 dB on low
One-year filter

Watch out for

50 dB on high

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 setting	19 dB
Smoke CADR	160 CFM
Loudest setting	50 dB
CADR per watt	8 CFM/W
Carbon or odor stage included	Yes
Main filter life	12 months
CADR (smoke / dust / pollen)	160 / 167 / 179
Recommended room	248 ft² (4.8 ACH)
Filter	Particle + carbon
Filter life	Up to 1 year (RealTrack)
Noise	19 dB low, 50 dB high
Power	20 W max
Weight	5.64 lb
Price	Check price

Check price at Amazon

Specs source:

Blueair: Blue Signature Small

Blueair Blue Signature Small head-to-head

Head-to-headBlueair Blue Signature Small vs Coway Airmega 150 Featured inQuietest Air Purifiers for Sleep (2026)

How it compares

Open the full comparison table

Coway Airmega Halo

#1 · 17.8 dB in sleep mode, Energy Star

Blueair Blue Pure 411i Max

#2 · 19 dB on low, 46 dB on high

Coway Airmega Mighty2 (AP-1512N)

#3 · The Mighty's successor with a laser PM sensor

Blueair Blue Pure 511i Max

#4 · A 4.2 lb nightstand-size purifier

Blueair Blue Pure Mini Max

#6 · A 2.8 lb desk or nursery purifier

Levoit Eleva 300X

#7 · 20 dB sleep mode with separate HEPA and carbon filters

Coway Airmega 150

#8 · A slim 153 CFM purifier, 6.5 in deep

Coway Airmega Mighty2 Mini

#9 · A compact Mighty with 143 CFM

Coway Airmega 100

#10 · A 108 CFM bedroom unit with a 1-year 3-in-1 filter

Coway Airmega AP-1512HH Mighty

#11 · The original Mighty: 233 CFM smoke

Rabbit Air BioGS 2.0

#12 · Rabbit Air's 4-stage bedroom model

Levoit Vital 100S

#13 · A 143 CFM purifier with HEPA-grade sleep mode

Levoit Sprout

#14 · A nursery purifier with ambient sounds and soft lighting

#15 · A 162 CFM Wi-Fi purifier with a 12-month carbon filter

Blueair Mini Restful

#16 · A purifier with a sunrise alarm clock

Levoit Core 300S

#17 · A compact 141 CFM Levoit at 23 W

#18 · A simple 360° purifier with no app

Levoit Core 200S

#19 · A 90 CFM purifier with a night light

Levoit Core Mini

#20 · A 2.2 lb desk purifier with aroma pads

Honeywell Allergen Plus AQSense HPA125

#21 · An Energy Star purifier for rooms up to 110 sq ft

Shark BreatheClear Compact Pro (HP062)

#22 · A small purifier with motion sensing and a 6-year filter

Shark NeverChange Air Purifier (HP152)

#23 · A 5-year-filter purifier for up to 650 sq ft

Molekule PECOAir

#24 · Molekule's PECO-HEPA purifier for bedrooms and offices