Compact air purifier with Wi-Fi connection The new generation of Blueair's incredibly popular and beloved air purifiers in the Classic family is compact and efficient, with an elegant and discreet design. Although the Blueair Classic 205 is small and can be easily moved around the house, don't be fooled by its size: the quality is excellent and the surface area of the filter is large. The Classic 205 is perfect for compact spaces such as bedrooms and smaller apartments.   HEPASilent particle filter Classic 205 PA uses Blueair's unique HEPASilent technology, which captures up to 99.97% of airborne particles up to a size of 0.3 micrometers. This advanced filter captures virtually every particle present in the air: pollen, dust, pet dander, mold spores, allergens, viruses, and bacteria — and 99% of all PM2.5 particles. Enjoy clean, healthy air that is 99.97% pollution-free. Note: The Classic PA comes with a particle filter. If you have problems with odors and gases, we recommend the Classic 205 SM SmokeStop filter with activated carbon for best results.   Quiet in operation By using a unique combination of electrostatic and mechanical filtration, Blueair filters can use less dense filter media while maintaining high filtration efficiency. This means that less effort is required to push the air through the filter, resulting in high-quality performance at all speeds and near-silent operation. The products are also certified with EnergyStar, which means minimal power consumption.   LED symbols Clear LED symbols allow you to see the status of the Wi-Fi connection, fan speed and when you need to replace the filter (after 6 months of use, or 4,380 hours). Blueair 205 is Wi-Fi compatible for easy remote control via smartphone or tablet.   Blueair Friend app With the Blueair Friend app, you can control functions on your Blueair Classic 205 such as fan speed, LED intensity, child lock and night mode. Blueair Friend can be downloaded for free from the App Store or Google Play.   Features of the Classic 205 PA: - 5 air changes per hour in a room of 26 m2 - CADR: dust/pollen 340m3/hour (200 cfm) - Suitable for bedrooms and smaller apartments - Airflow (speed low-high): 128-374m³ / hour - 1 unique Blueair filter with 2.9 m2 filter surface - HEPASilentPlus - filter technology - Change fan speed, LED intensity, child lock, night mode via smartphone / tablet - Energy efficient, energy consumption (speed low-high): 20-80 W - Noise level (low-high speeds): 32-56 dB (A) - Filter replacement indicator - Easy to use and maintain.