- Only dust in the air that passes through it
- Only if the filter is maintained
- Surface dust is unaffected
Its a noticeable amount, but not likely all of it
When you say surface dust is unaffected I assume you mean the dust that’s already settled prior to getting a purifier right? If I were to use an air purifier I’d need to dust surfaces less often right?
Depends on what the air purifier was filtering. Mine does PM10, PM2.5, VOC and NO2. That means it’s filtering out particles down to 2.5mm plus volatile organic compounds (smoke, aerosolized oils, water vapour with pathogens, etc) and nitrous oxide.
The filter is a multi stage filter; the PM2.5 stuff passes right through the PM10 filter.
Interestingly, if I want to clear a room of smoke, sawdust, drywall dust or similar, what works the best is running my shop vac with a HEPA filter installed until I can’t smell the dust/smoke (usually around 5 minutes) and then I turn my air filter on full blast and it clears up the air in around 20 minutes. If I just used the air filter, I’d probably clog it up and then just have to replace the comparatively expensive filter.
Should probably point out that “mm” in this case is micrometers, not millimeters.
Do you have a recommendation for a budget one?
No; however, you essentially have a line between price and noise, and you need to check what they filter, how expensive the filters are, and how often they need to be replaced, as well as how much it costs to run them.
Add strong fan, profit
IMHO the benefit is less “things are cleaner in my house” and more “I’m breathing less PM10” and such
Ah dang, I’m sick of dusting stuff
I’ve found that regularly wiping the floors helps quite a bit. You don’t have to be super thorough, just reduce the amount of dust in the room.
Not sure, if vacuuming would work similarly well, since it kicks dust into the air, which can settle on surfaces again…
The floors are the least of my worries because I spray mop it, it’s the dust on shelves, plants, irregular shaped stuff that’s annoying and much more time consuming to dust
I’m saying spray-mop the floor once a week and you’ll take most of the dust out of that room before it settles on harder-to-clean surfaces, which reduces how often you need to clean shelves, plants etc…
Most dust in a typical household is from shed skin cells, from either humans or pets. And I do imagine that most shed skin cells just fall onto the floor at first and can be collected there.
It’s not the particular surface that people are concerned about, but more frequent cleaning of that surface might reduce overall dust settling everywhere
Air purifier? That’s a less than ideal term since it gets applied to stuff like ionizers that are of dubious efficacy.
But a straight up filter, hell yeah they work. Just check the filter on your furnace/heater sometime. Same with any AC unit.
If you have something that has a filter, it will reduce dust, period. Without a filter, you aren’t going to reduce dust worth a damn, if at all.
But you also need to make sure it’s turning the air over often enough. I haven’t looked the info up in ages, but if you want a decent reduction in particulates, the device has to move air fairly significantly it it isn’t going to about to much.
Like, my house is right around a hundred years old. Four humans, and various animals over the years. Shit is dusty what with the dead skin, particles from things like carpet, pollen, dander, etc. Enough stuff gets produced that even with the regular furnace/ac filter, and a handful of one-room filters spread throughout the house (which tends to be better than one big one imo) we still get dust buildup on everything. But if we don’t run the filters, you can both visibly and nasally tell the difference.
A newer house isn’t going to have as much, so you can likely get away with less air turnover, short term, and need to dust less. But you’ll never be totally dust free just because you can’t move enough air to prevent at least a little settling.
They help, and they can take out airborne pathogens. Look up “Corsi-Rosenthal box” if you want to DIY a very powerful and cheap but noisy one.
You also need to get a good brand too. There are a lot of “air filters” out there that are just fans
make sure its hepa filters too, and not hepa-like.
Like air filters without a filter? Because air filters are usually just fans (with a filter in it) and that’s just perfectly normal.
Reminds me I need to reset mine again. Big mistake to buy a “smart” air filter. I thought I was getting remote monitoring of air quality data, but I have something that makes too many assumptions about your home network so doesn’t work on mine, support that gave up, and a purifier that needs to be reset every couple weeks
Name and shame
Hell yea! Gotta go big to get a real effect. Put the filters in rooms that are 1/2 or less the rates size .
I have Honeywell filters in each bedroom . So much less dust. the pre filters catch most of the dust and they can be cleaned and reused.
My understanding is that the types that are ozone generators don’t remove particles from the air, they charge the particles so that they stick to surfaces and aren’t floating in the air
Yes they absolutely do.
I didn’t even know how much until I analyzed data from multiple particulate sensors! But yeah I switched from having my hepa filter off at night to running 24/7. And this is with an extremely good whole house filter.
ymmv I suspect homes with ERVs/HRVs wouldn’t be as affected since they’re introducing outside air regularly. I don’t have one and wish I did.
Yes.
You know how sometimes when you do a bunch of loads of laundry and forget to clean the lint trap you can just peel the lint out like it’s a thick sticker?
You can do that same thing on a large air purifier. It’s pretty gross because it’s all hair and dust.
Winix makes some nice full room air purifiers.
Not really. For us, the noticeable difference is the robovac with wet mopping.
what would be a good one that is not too expensive?
a box fan and a matching-size furnace filter.
Dust is pretty inescapable. Dust can even be from dead skin off of you. You’re always surrounded by particles in the air, some you can see, some you can’t see. The air is almost never 100% clean. But that doesn’t mean that upkeeping cleanliness and seeking things like humidifiers, filters for A/C-Heater-Furnace is all for naught. They will help and keeping a light schedule as to how much you clean helps too.
I know, dust really sucks and can give you the feeling of ‘why bother’ when it’s just going to come back and collect layers in a matter of time. But, you can at least slow it down.
I think most dust is dead skin and skin mites. Then in some areas there might be most dirt (entrance) and fibers (where you do laundry).
