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Ordered this last night, arrived this morning. Amazon is good at what it does...
Supposed to weigh 6-7 pounds, but it's _bigger_ than I envisioned. I was expecting something slightly larger than a personal air purifier, this is much bigger. Not sure it would even fit in my backpack and if it did, it would fill most of it. Traveling with it would be somewhat awkward. Could maybe do it if I dump my winter stuff, or else expand to a second piece of luggage.
The top speed is loud-ish (supposedly 50 dB elsewhere) but a lot quieter than top speed of my Honeywell 50250. Possibly quieter than the quiet mode of the Honeywell. Of course, lower power: 140 CFM (cubic feet per minute) vs. 250, for the top speeds. It may also be that the Honeywell needs a filter cleaning.
Power: top speed took 15 minutes to reduce office PM2.5 of 7 to under 1.
It has 3 main speeds, and a night mode. Low speed is definitely audible but not big. Night mode is almost silent, but then I wonder how much it's doing. There's _some_ air flow. Sadly, none of these purifiers or fans seem to give ratings for less than top speed.
Why I did order this one? It seemed small plus rated as both cost-effective and quiet on graphs like this: https://twitter.com/marwa_zaatari/status/1598180050893148160 or https://twitter.com/LibDemPatrick/status/1598460782408351744
And double checking myself, it had CFM/$ of around 1.4, with little in the HEPA space beating that, apart from discounts. (I did find later that Taotronics is having a huge sale on one, 176 CFM for $60. Sale like that might mean they're discontinuing it and you should buy your replacement filters now.)
By the way, it's been maybe 20 minutes on low (not night) speed and PM is still under 1, so it's keeping up with whatever's leaking in. Probably too soon to really tell, though.
Supposed to weigh 6-7 pounds, but it's _bigger_ than I envisioned. I was expecting something slightly larger than a personal air purifier, this is much bigger. Not sure it would even fit in my backpack and if it did, it would fill most of it. Traveling with it would be somewhat awkward. Could maybe do it if I dump my winter stuff, or else expand to a second piece of luggage.
The top speed is loud-ish (supposedly 50 dB elsewhere) but a lot quieter than top speed of my Honeywell 50250. Possibly quieter than the quiet mode of the Honeywell. Of course, lower power: 140 CFM (cubic feet per minute) vs. 250, for the top speeds. It may also be that the Honeywell needs a filter cleaning.
Power: top speed took 15 minutes to reduce office PM2.5 of 7 to under 1.
It has 3 main speeds, and a night mode. Low speed is definitely audible but not big. Night mode is almost silent, but then I wonder how much it's doing. There's _some_ air flow. Sadly, none of these purifiers or fans seem to give ratings for less than top speed.
Why I did order this one? It seemed small plus rated as both cost-effective and quiet on graphs like this: https://twitter.com/marwa_zaatari/status/1598180050893148160 or https://twitter.com/LibDemPatrick/status/1598460782408351744
And double checking myself, it had CFM/$ of around 1.4, with little in the HEPA space beating that, apart from discounts. (I did find later that Taotronics is having a huge sale on one, 176 CFM for $60. Sale like that might mean they're discontinuing it and you should buy your replacement filters now.)
By the way, it's been maybe 20 minutes on low (not night) speed and PM is still under 1, so it's keeping up with whatever's leaking in. Probably too soon to really tell, though.