Room air purifiers

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Room air purifiers
« on: November 28, 2020, 03:53:41 PM »
Do you guys know anything about room air purifiers? So far I've seen two styles:

Dyson (or other Designer brand) that start at $600, usually white and chrome, meant to be beautiful free standing works of art. Filters for these can be several hundred dollars. And might become unavailable after a while (because startup folding or product lines ending)

Honeywell (or other Industrial brand) usually cost + materials (start at $80), black, squat, ugly. Filters are usually cheaper and just simple squares that drop into a slot. Probably available forever.

Both of these have some kind of HEPA filter. Some may have UV-C light kill tech. The dysons are pretty quiet - the honey well tends to be LOUD on its max setting (where it's actually gonna out put for its room size rating).

I realized what I want is a long square box, about 12" square and six to eight feet long. Suck air in one end, push it out the other (free standing on the floor it would be bottom to top). Inside it should have guts.

I would prefer something with ultraviolet radiation killing bugs (and breaking apart large particles).

If something like this exists off the shelf, I'll buy it. If not - have any of you ever built an air filter?

Thanks

Re: Room air purifiers
« Reply #1 on: November 28, 2020, 04:03:18 PM »
UV air purifiers exist, they are widely used in hospital ventilation systems according to wikipedia

I've never personally used either of these but I searched for "UV air purifier" on amazon and this is what showed up

https://www.amazon.com/GermGuardian-Purifier-Allergies-Cleaner-Guardian/dp/B01CTN024Y/

https://www.amazon.com/GermGuardian-AC4825-Sanitizer-Allergens-Guardian/dp/B004VGIGVY/


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Re: Room air purifiers
« Reply #2 on: November 29, 2020, 08:17:11 AM »
Consumer Reports recommends "Blueair" and "Honeywell" brands.  The "Honeywell 50250" looks like a barrel that pulls in from all directions and spews clean air straight up. I could really use something to deal with all the dust in my apartment from city-living.

Re: Room air purifiers
« Reply #3 on: December 01, 2020, 03:13:07 PM »
the honeywell ones are excellent value.  if you want to make one its just hepa filters and fan.   If you want it to sterilize you should probably have a reason for that, but you can buy uvc bulbs and just make sure its in a housing where its not gonna burn your eyes out, anything that can sterilize at the speed of your fan's airflow is gonna burn your fucking eyes out.

Re: Room air purifiers
« Reply #4 on: December 01, 2020, 03:14:24 PM »
oh yeah i have like 4 of the honeywell HPA200s.  You can buy much cheaper filters on ebay when its replacement time.

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Re: Room air purifiers
« Reply #5 on: December 02, 2020, 04:29:24 PM »
Wait, filters are cheaper on ebay?? wtf!! '
Are they knockoffs or what?
How much are you paying on ebay vs other sources?
What about shipping?
How often do YOU replace filters?