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Best picks
Philips AC0820/10 leads with a 19 dB(A) sleep mode in manufacturer data. Levoit, Blueair and Winix cover other bedroom needs, from small rooms to larger spaces.
Quick answer
Start with the sleep figure, then check the room size. Philips AC0820/10 comes first because its sleep mode is rated at 19 dB(A) on the manufacturer page. Levoit Core 300S suits people who want the display lights off at night. Levoit Vital 100S suits smaller bedrooms and publishes a CADR. Blueair Blue Pure 511 is sized for about 16 m². Winix Zero Compact suits larger bedrooms, with a maximum rated room size of 50 m².
New to the terms? How to choose an air purifier explains CADR, room size and filtration in plain language.
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Best for light sleepers
Sleep mode is rated at 19 dB(A) and the page says display lights are dimmed in sleep. CADR is 190 m³/h. Maximum room size is 48–49 m², but the cleaning-time footnote assumes 20 m² floor area. Limitation: filter costs are not in the source pack.
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Best for dark-room sleep with smart controls
Sleep Mode runs at 22 dB and turns the display lights off. The manufacturer gives 50 m² at two air changes per hour and 100 m² at one. Limitation: the source does not publish a CADR, and the air-change basis matters for your room.
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Best for smaller bedrooms with a published CADR
CADR is 243 m³/h and the manufacturer gives 20.8 m² at five air changes per hour. Sleep Mode is shown here at the conservative 24 dB; the main product copy states 23 dB. Limitation: the washable pre-filter replacement interval is 8–12 months.
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Best for small bedrooms up to about 16 m²
The manufacturer recommends about 16 m² at 4.8 air changes per hour. Sound ranges from 24 to 49 dB and CADR is 123 cfm for pollen and dust. Limitation: the source page gives no sleep-mode noise or display-light behaviour, so check these before buying. Filters are recommended every six months.
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Best for larger bedrooms with yearly filter changes
CADR is 250 m³/h and the manufacturer's maximum room capacity is 50 m². Sleep mode switches off control-panel lights. Limitation: noise runs from 26.5 to 53.7 dB and no sleep-mode dB figure is given. The WINIX Filter O is recommended every 12 months.
| Model | Sleep noise (dB) | Noise range (dB) | CADR (m³/h) | Room size (m²) | Lights in sleep | Filter interval |
|---|---|---|---|---|---|---|
| Philips AC0820/10 | 19 dB(A) | 19–49 dB(A) | 190 | 48–49 max; 20 in cleaning footnote | Dimmed | 12 months |
| Levoit Core 300S | 22 | — | — | 50 at 2 ACH; 100 at 1 ACH | Off | 6–8 months |
| Levoit Vital 100S | 24 (23 in main copy) | — | 243 | 20.8 at 5 ACH | Off in sleep or dark | 8–12 months |
| Blueair Blue Pure 511 | — | 24–49 | 123 cfm (pollen) | About 16 at 4.8 ACH | — | 6 months |
| Winix Zero Compact | — | 26.5–53.7 | 250 | 50 max | Off | 12 months |
Filter cost per year is — for all five models because no price is in the source pack. Method: replacement filter price divided by its interval in months, multiplied by 12.
Common questions
Use the purifier according to its instructions, keep the cable and unit out of reach, and avoid ozone-producing devices. The cited product specifications do not establish safety for every animal or household.
The product sources used here do not establish an asthma outcome. A purifier may reduce some airborne particles, but it does not replace medical advice or prescribed treatment.
This comparison measures room guidance, airflow and noise rather than clinical outcomes. Choose filtration evidence carefully and seek medical guidance for asthma management.
A correctly sized purifier can filter airborne particles while it runs, provided its intake and outlet stay clear. Check sleep-mode airflow as well as noise because the quietest setting may process less air.
Price alone does not show performance. Look for a suitable particle CADR, transparent room-size assumptions, replacement-filter availability and noise data for the mode you will use.
A compact purifier can suit a small room if its published airflow matches the room volume. Very small units may not deliver enough clean air for a larger bedroom.
Filters need replacing, fans use electricity and higher settings can be noisy. A purifier also cannot replace ventilation, cleaning or fixing damp and pollution at source.
Smoke odour needs meaningful activated-carbon capacity, which the cited bedroom sources do not quantify. Particle CADR alone does not prove odour removal, so no bedroom pick is presented as a verified smoke-smell solution.
We built this shortlist from manufacturer specification pages only. Gearjury has not physically tested these air purifiers. Where a manufacturer gives two figures, we say so. The order follows the editorial selection.
Keep exploring
Compare five air purifiers by manufacturer-published room coverage, particle filtration details and noise. Philips AC0820/10 is a compact-room starting point; no product here promises allergy relief.
The Levoit Vital 100S and WINIX ZERO Compact publish CADR figures in m³/h. We compare five models by manufacturer data, with room-size assumptions and missing costs made clear.
Philips AC0820/10 has the lowest published sleep-mode noise in this shortlist. Levoit, Blueair and Winix offer alternatives for different room sizes and features.