A:AnswerThe difference is the more expensive one is the "Auto" model - it has a setting where it automatically slows down / speeds up based on the air quality of the room.
The other main difference is the more expensive one uses less electricity.
For these two reasons, I bought the Auto one. But the price difference was only $40-50 at the time so it was an easy choice, especially since the Auto uses less electricity (more efficient motor) so it ends up being cheaper to own over the long run.
The energy use for 211+ is 30-61 watts. The 211+ Auto is 4-38 watts. Per the Blueair website.
A:AnswerHi there, the Blue Pure 211+ Auto does contain carbon in its filter and would work for this purpose. However, please note that the Blueair purifiers with the highest removal of VOCs are the HealthProtect family (which feature a SmartFilter that has activated coconut carbon directly infused into the weaves), Classic 80i family (which come standard with DualProtection filters), Pro family (when upgraded with the Carbon + filter add-on or SmokeStop filters), and the Blue Pure 121 (when upgraded with the Extra Protection Particle + Carbon filter).
A:AnswerI’m not sure that I understand your question.
If you are asking about what the air purifiers response to smoke is…well the fan picks up the scent and it begins to speed up and by this time the blue light on the indicator is turning to yellow first, then red. The red indicates the air is polluted and the purifier is working at 100%. As the air quality resumes to normal so does the light… it turns to blue.
A:AnswerHi Jeff, Blueair has conducted ongoing independent testing to ensure our air purifiers do not release harmful levels of ozone. All Blueair air purifiers are tested in accordance with UL Standard 867, demonstrating ozone emission levels far below the mandated California Air Resource Board (CARB) ozone emissions limit of less than 50 parts per billion (ppb). All Blueair air purifiers are CARB certified.
A:AnswerHi there, it would be fine to place an air purifier intended for a larger space into a small bedroom. We would only advise against choosing an air purifier model that is too small for the room in which you intend to use it.
A:AnswerPower consumption is minimal. The order does include the particle and carbon filter, which must be replaced every six months. If you auto-order the company will send you the outside prefilters for 15% off. Prefiters are available both in woven and in a thin stretchy fabric. No offgassing on anything.
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: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:AnswerHello, the Blue Pure 211+ Auto is near silent on low fan speed and has a light fan sound liken to domestic white noise. All Blueair Blue Pure units are covered by 2 years of extended warranty with registration on Blueair.com