Your link’s top pick, the Coway AP-1512HH Mighty, has a pollen CADR of 240 CFM [1], while a filter cube has a pollen CADR of more like 464 CFM while being much cheaper. Leaks are not a critical problem for this usage, the way they would be on an intake filter, because you are repeatedly processing the same room’s air. What matters is the overall effectiveness, which is what CADR (“clean air delivery rate”) measures.
[1] Per Lee 2020, covid is probably primarily transmitted in particles of 9μm or larger, and when reporting “pollen” effectiveness people use 5-11μm.
Your link’s top pick, the Coway AP-1512HH Mighty, has a pollen CADR of 240 CFM [1], while a filter cube has a pollen CADR of more like 464 CFM while being much cheaper. Leaks are not a critical problem for this usage, the way they would be on an intake filter, because you are repeatedly processing the same room’s air. What matters is the overall effectiveness, which is what CADR (“clean air delivery rate”) measures.
[1] Per Lee 2020, covid is probably primarily transmitted in particles of 9μm or larger, and when reporting “pollen” effectiveness people use 5-11μm.