The whisper-quiet 25i packs all the power and smart features you need into our most compact size. Perfect for purifying a small living space or amplifying your current purifier setup, the 25i is sized to give you ultimate flexibility.
Sound Type: Pink Noise | All speeds
Smart sensors: Detects PM 2.5, TVOC, eCO2, temperature and humidity levels
airID: Identifies pollutants in your air: dander, smoke, pollen, fire, smog
Advanced control capabilities: Change settings across multiple devices from the Alen Air app.
Auto Light Mode: Automatically dims panel lights when room is dark or light
RFID filters: Reads filter type and status, tracked via Alen Air app.
Enhanced Wi-Fi connectivity: Supports both 2.4 GHz and 5 GHz Wi-Fi networks
Firmware updates: Over-the-Air (OTA) firmware updates via the Alen Air app
You are currently viewing Quiet Mark Certified products available for the US market. These products may only be available in specific regions.
Click here to manually select another region.
Get expert tips on quieter living, and discover the joy of more peaceful products for your home or design projects.
Your tranquility matters to us. We will never share your details with third parties, and you can unsubscribe anytime. By signing up you are agreeing to our privacy policy.
Check it's quiet before you buy it, with whisper-quiet products tested by Quiet Mark
Discover expert tips for living a more peaceful life
Enter exclusive competitions for Quiet Mark-certified products
You’re in the Quiet club!
Thank you for subscribing to Quiet Times. You’ve joined a global community
of people who are already enjoying a quieter lifestyle.
The first rule of quiet club is: ‘Don’t keep it to yourself!’
If you know someone who would appreciate the Quiet Times newsletter,
please share the goodness with them. They can sign up for free here: