A:AnswerHi there! With the machine on, press and hold the power button down for a solid 30 seconds. The light should blink then go back to the blue-ish white that it was.
A:AnswerIn my experience the actual utility of the filter depends on what it has been and is filtering. I replaced one at six months and it had been used during construction and was filthy but it did still seem to be working. Another BlueAir I have (the 311) worked for about eight months and then I could smell cooking odors. Replaced the filter and no odors.
A:AnswerAccording to the Blueair site, I would say no. They list two different filters (one auto and one not). I do not see this filter (which appears to be the right one for the 211+ auto) on the Best Buy site: https://www.blueair.com/us/air-purifier-filters/blue-filters/blue-pure-211-plus-auto-particle-carbon/2263.html?cgid=blue-filters
A:AnswerNo. The filter media itself is not HEPA. This air purifier produces an electrostatic charge that aids in filtering the air. Buyers need to know that this air purifier is not just a hepa filter with a fan pulling air through it. A lot of people seem to think that.
