COMPACT FOR FRESH AIR: Only Blueair air purifiers use HEPASilent technology; Blue Pure 511 air purifier quickly cleans 180sqft small room in about 12.5 minutes or up to 431sqft space in 30 minutes*.energy_consumption : 16 W | POWERFUL YET WHISPER-SILENT: Ideal for bedrooms nurseries or home office with compact footprint and low noise levels; 24 dB quieter than a whisper on low and 49 dB on high** | HEPASILENT DUAL FILTRATION TECHNOLOGY: Removes at least 99.97% of airborne particles down to 0.1 microns; The tiniest particles, such as viruses and bacteria, are captured, while larger particles such as dust, pollen and smoke are also removed*** | PERSONALIZABLE DESIGN: Our most compact air purifier seamlessly fits into your home with three Scandinavian inspired washable pre-filter colors; you can personalize your air purifier to match your interior; Arctic Trail dark gray pre-filter included | EFFICIENT AND COMPACT: Certified by Energy Star as Most Efficient model; Blueair air purifiers are whisper-silent and use less energy than a light bulb; Without taking up too much space enjoy fresh air in a matter of minutes with the touch of a...

Blueairs most compact air purifier. Only Blueair air purifiers use HEPASilent technology quickly cleaning 180sqft small room in about 12.5 minutes or up to 431sqft space in 30 minutes.* The Blue Pure 511 air purifier combines plug-and-play simplicity with signature Blueair performance. Its compact footprint and low noise levels, makes Blue Pure 511 air purifiers ideal to place in a bedroom or office.*On highest fan speed. Clean Air Delivery Rate (CADR) based on AHAM AC-1. According to AHAM air changes per hour (ACH) is the measure of the outside air volume added to a space divided by the volume of that space over a set amount of time. **Sound pressure on low. A whisper is about 30 dB. ***Tested on PM 2.5 (0.1 - 2.5 microns) up to 90mins. ****"Light bulb" defined as LED light bulb with 40 watts energy consumption.