I measured it last year during bad air quality days, on high, it would take the bedroom from ~150 AQI to less than 10 in about 15 minutes. On low it's quiet enough to be unobtrusive while sleeping.
Filters cost around $100 and are rated to last a year (and even after a heavy fire season, I've found that to be true)
More expensive than a box fan + filter, but easier to use and a little more attractive.
Though this year, I upgraded my furnace with an AprilAire filter box and an MERV13 filter, which has worked surprisingly well, I thought I'd still want to use the standalone HEPA filter in the bedroom, but the furnace filter keeps the entire house below AQI 10 even with outside AQI at 250 (haven't had air worse than that yet this year)
https://www.whirlpoolairpurifiers.com/product/whirlpool-wp50...
I measured it last year during bad air quality days, on high, it would take the bedroom from ~150 AQI to less than 10 in about 15 minutes. On low it's quiet enough to be unobtrusive while sleeping.
Filters cost around $100 and are rated to last a year (and even after a heavy fire season, I've found that to be true)
More expensive than a box fan + filter, but easier to use and a little more attractive.
Though this year, I upgraded my furnace with an AprilAire filter box and an MERV13 filter, which has worked surprisingly well, I thought I'd still want to use the standalone HEPA filter in the bedroom, but the furnace filter keeps the entire house below AQI 10 even with outside AQI at 250 (haven't had air worse than that yet this year)