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Deal ends after 1/21/22.
Simply add one to your cart, then add a second one. The second one will show a price of "$0" while proceeding through checkout.
I have this one in my kid's room. The sleep mode is silent and 1 fan speed is still low enough for the pickiest quiet room needing person. The filter is round, even though it only has vents on two sides. I like it and it certainly works well pulling dust and pollen out of the air.
Seems like a pretty good deal but the frequency of which you need to change filter is a turn off (once every 3-4 months) replacement filters aren't that inexpensive either, I'd pass
Last edited by CalvinHuang January 21, 2022 at 07:20 PM.
CADR isn't as important as CMF, though CADR is often used as a metric to calculate CMF.
Other way around
The CADR is basically a reflection of the air flow (CFM) times the efficiency of the air filter. So, if an air filter has 200 cfm and 100% efficiency the CADR would be 200. If the air filter has 200 cfm and 75% efficiency the CADR would be 150.
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it does look pretty small, in my experience when you want to move volumes of air, size matters. I guess you can put 4 in a room 1 in each corner but then you would have to replace 4 filters.
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The CADR is basically a reflection of the air flow (CFM) times the efficiency of the air filter. So, if an air filter has 200 cfm and 100% efficiency the CADR would be 200. If the air filter has 200 cfm and 75% efficiency the CADR would be 150.
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