Blue Pure 511 Replacement Filter Smokestop Airfree has none of those

Airfree has none of those ongoing costs and is designed to operate 24/7 whilst consuming less electricity than a 50w light bulb

you can place the Blue Max air purifier anywhere in your room without compromising performance

Less dense filters require less air pressure— resulting in quieter and more energy efficient air purifiers

Only compatible with the Blue Signature™ air purifier

Blue Pure 511 Replacement Filter Smokestop Airfree has none of thoseBlue Pure 511 Combination Filter Combined particle and carbon filter for the Blue Pure 511 air purifier. The combination filter cleans the air of particulate matter like pollen, dust, pet dander, mold spores, allergens, viruses and bacteria. The carbon filter also removes smoke, odors, gases and VOC's. Blueair's world leading filter technology uses a unique combination of both electrostatic and mechanical filtering, which means that the filtration