Xiaomi Smart Air Purifier 4

Quick verdict

The Xiaomi Smart Air Purifier 4 offers a solid combination of air purification performance and Home Assistant integration. Once you extract the device token, it runs locally with full control over fan speed, modes, and sensor readings. The token extraction step is the main hurdle, but it is well-documented in the community.

Standout: Local Home Assistant control via Xiaomi Miio integration with built-in PM2.5, temperature, and humidity sensors.

Notes last checked May 31, 2026.

Compatibility snapshot

Why it stands out

• good Home Assistant support via Xiaomi Miio with local control after token extraction
• built-in PM2.5 and temperature/humidity sensors exposed to Home Assistant
• high CADR rating provides effective coverage for medium to large rooms

Reasons to hesitate

• initial setup and token extraction require the Xiaomi Home app
• replacement HEPA filters are more expensive than IKEA STARKVIND filters
• Xiaomi app ecosystem can be confusing with multiple regional apps

Best for

• Home Assistant users who want a capable air purifier with local control and air quality sensing
• medium to large rooms that need higher CADR than budget purifiers provide

Avoid if

• you want zero-friction setup without token extraction steps
• you are looking for Apple HomeKit native support

Privacy and local-control notes

Home Assistant integrates locally via the Xiaomi Miio integration using device tokens. Initial setup requires the Xiaomi Home app. After token extraction, the device can run fully local.

Home Assistant support: supported · integration path: Xiaomi Miio.

Buying reality check

Price notes: Mid-range pricing with good value for the CADR rating. Replacement filters are moderately priced.

Compare side by side: see air purifier comparisons →