microcovid.org thinks outside is 1⁄20 the risk of inside, and 5 ACH gets you to 1⁄4.
The purifier you link to has a CADR of 141 CFM, so roughly equivalent to bringing in outside air at a rate of 141 CFM.
If your residential system can do 1,500 CFM on a 2,000 sqft house with 8ft ceilings, I get 5.6 ACH. That’s quite a bit better than I expected; not sure how typical that is?
microcovid.org thinks outside is 1⁄20 the risk of inside, and 5 ACH gets you to 1⁄4.
The purifier you link to has a CADR of 141 CFM, so roughly equivalent to bringing in outside air at a rate of 141 CFM.
If your residential system can do 1,500 CFM on a 2,000 sqft house with 8ft ceilings, I get 5.6 ACH. That’s quite a bit better than I expected; not sure how typical that is?