Blueair - Blue Signature Smart Air Purifier for Large Rooms up to 3385 ft² - Nordic Fog

Thank you for your question! Blueair filters are not True HEPA. Our air purifiers use HEPASilent™ technology which combines electrostatic and mechanical filtration to capture 99.97% of airborne particles down to 0.1 microns. Because of this unique technology, our filters are less dense than a True HEPA version, while still achieving a high clean air delivery rate (CADR), which also allows them to be quieter and energy-efficient. For more information, visit our website here: https://www.blueair.com/us/blueair-performance.html

The Blue Signature utilizes a laser sensor to dynamically monitor PM1, PM2.5, and PM10. This sensor is more advanced than LED/Infrared sensors, which only monitor PM 2.5. Though most sensors can be officially categorized as optical. For more information regarding the Blue Signature, visit our website here: https://www.blueair.com/products/blue-signature

Yes. Filter cost approximately $65