Xiaomi Air Purifier 4 Compact
- 206 square feet rated floor area
- 99.97% filtration, 0.3 micrometer
- Pre-filter, HEPA and activated carbon in one filter
- 20 dB quiet operation
- Mi Home app, Alexa and Google Assistant
- 0.7kWh per 24 hours, 27W
- 4.9 pounds, filter lasts 6-12 months
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A small, very quiet smart purifier for a bedroom or office, with app air quality readings and low power use. Its rated area is small, so it will not keep up in a large living room.
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ASIN: B0B58YSWWWModel: 4 CompactCategory: HEPA Air Purifiers
Overview
Bedrooms, nurseries and home offices suit this small Xiaomi purifier, which pairs an integrated HEPA and carbon filter with an air quality sensor and app readout. It runs nearly silent at low speed, and the screen dims or switches off for sleep.
Quiet operation and smart controls in a small footprint make it an easy bedside or desk unit. Low power draw suits running all day. The rated floor area is modest, so larger rooms need a bigger machine.
Who it's for
Single rooms, dorms and offices get smart, quiet purification. Open-plan homes need a purifier rated for far more space.
Pros and cons
- Very quiet at low speed
- App air quality readout
- Voice assistant support
- Low energy use
- Small rated area
- Single integrated filter
- Filter life varies widely
Performance notes
Cleaning speed depends on fan setting and room size; the listing shows a small room cleaned in minutes and a larger one taking much longer. The integrated filter traps fine particles and the carbon layer adsorbs odors. An air quality sensor drives the auto mode.
Specifications
| Brand | Xiaomi |
|---|---|
| Model | 4 Compact |
| Dimensions & fit | |
| Particle Retention Size | 0.3 micrometer, 99.97% |
| Item Dimensions D x W x H | 8.66 x 13.18 x 8.66 inches |
| Item weight | 4.9 pounds |
| Capacity & performance | |
| Noise Level | 20 dB |
| Wattage | 27W |
| Power & efficiency | |
| Power Source | Power adapter, 100-240V, 50/60 Hz |
| Energy use | 0.7kWh per 24 hours |
| Construction & materials | |
| Color | White |
| Included components | |
| Included Components | Air purifier, filter, power adapter, user manual |
| Other details | |
| Floor Area | 206 square feet |
| Filter Type | Pre-filter + HEPA (electrostatic) + activated carbon |
| Control Type | Mi Home app, Amazon Alexa, Google Assistant, touch screen |
| Filter life | 6-12 months |
| Specification Met | TUV Rheinland Allergy Care; EPA, FCC, RoHS certified |
Frequently asked questions
Can the Xiaomi compact purifier clean a large living room?
It is rated for 206 square feet. Xiaomi says it cleans 517 sq ft in 30 minutes, so it works slowly in big spaces.
How often do I replace the Xiaomi 4 Compact filter?
The filter lasts 6-12 months, and the Mi Home app shows remaining life. Rotate and pull it out from the bottom to replace.
How quiet is the Xiaomi 4 Compact?
Its listed noise level is 20 dB, and the screen can be dimmed or turned off.
Does the Xiaomi 4 Compact work with Alexa?
Yes, with Amazon Alexa and Google Assistant.