To actually get it to work well for a large house, you need two box fans, or to not be using all filters of the highest filtration strength. Or just a box fan with greater strength than normal and actually change all those filters regularly.
The issue is just pyschologically biting the bullet and buying the 4-5 20x20x1 (or x2) filters all at once. It’s hard to go from 12 or 20 bucks a filter to 50 at a time for a big pack, but if you compare the amount of filtration and filter sizes it is almost the same per foot. While not having to pay for a unit.
128 cubic feet per minute. That’s less than three changes per hour for a 430 square foot room, which is a bit underpowered for anyone who really needs HEPA filtration. Probably adequate for a room half that size, like a very large bedroom.
@cinoclav Weird filter design. A thin layer of foam of some kind, atop normal blown HEPA filter material with black paperboard edges. I actually like them coming with the foam pre-filters. If they work.
I wish sizes were more standardized though, everything could easy be F1 or F2 sized.
I also got one of these here in February, and it’s way better than expected. Night mode is VERY quiet, with its lights dimmed. Bedroom has noticeably less dust buildup on our chifforobe. (Unit is running approx. 8-9 hours nightly.) Filters are expensive ($45) but with monthly vacuuming, will easily last a year. I bought an extra one- do NOT buy the generic filters, they may be a poor fit, poorly made, and ineffective. All-in-all, I am quite pleased with this machine.
Currently cheaper on Morningsave using the 25%-off coupon (adjusts to $51.75):
I bought one on Meh months ago and another on Morningsave last month (using VMP). They seem like good purifiers for the price. I had a “smarter” IoT-era Costco purifier die in its first year, and the ProBreeze has been a competent dumber replacement.