I have a related question: How do AC boxes and air purifiers interact? Do they work together or against each other? Would an AC unit keep reintroducing impure particles (like mold) nullifying the purifier’s work?
Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test
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Re: Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test
#522Earlier quoted context omitted.
I'm also a little suspicious of relying entirely on the CADR metric. If you're running a filter in an environment that's constantly producing particulates and you need to filter large volumes of air, it seems useful. If you're about to walk into a smoke filled room and have 25 minutes to clean the air first, there's no question that CADR is king. I think it would be interesting to run a purifier in a normal house for…
I'm more worried about the random friend who drops by. Sure we wear a mask, but when can we take it off when they are gone?
I’m not a doctor, but isn’t this a lost cause?
The masks we all wear are primarily droplet guards, not air filters, they catch splatter that might float. All of the air that blasts out the back and escapes is barely going to be diverted by another mask after it’s already escaped the other mask and has had time to exist, right?
I guess for my threat analysis, if you’ve already invited them inside your house and they’ve stayed long enough that you think their breath particulates are floating in the air, you’ve already lost the war, so to speak.
Probably just a few minutes will be all that matters, I suspect. If you like, go take a walk and wait for the droplets to land?
Re: Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test
#523Earlier quoted context omitted.
Everything Dyson is overpriced dreck, except for the handheld. 5% more function for 200% more $. Cheap vacuums are way better than they were. I bought a $60 upright at target for my office 5 years ago, it sucks (in the good sense) and is reliable. It does not have a ton of attachments, but it was $60.
Expensive vacuums are usually more quiet and, what is more important, are way better at filtering the output air, whereas cheaper ones - sure, they work, but they let a ton of dust out. For people with allergies this is a big selling point.
There is next to no reason to buy a Dyson v11 if you can also get a Roborock H6. I made my experiences here and prefer the vastly cheaper Roborock which has precisly the same build quality.
To be fair, the Dyson outperforms it very minimally in suction (I'd say like 5% better) but that doesn't justify the near double price. Also the Roborock has a 'lock' button and a much better wall mount in my opinion. It's battery is Lithium-Polymer and cleaning the vacuum is easier.
Marketing is the only reason why anyone would buy a Dyson v11 over a Roborock H6.
Re: Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test
#524Re: Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test
#525After watching this segment, I immediately bought a 20" box fan, a 20x20 MERV 11 filter, and put one together. It kicks the pants off of air purifiers twice the price and it moves a lot of air through. Best investment ever. CBC was testing CADR, which is one metric among others, but an important one if you're looking to clean a room's air, fast.
I am an EU resident (Netherlands) and have wanted to make a DIY air filter for myself for several years. Unfortunately, I simply can’t find any flat box fans on the market. Would someone else in the EU be willing to point me in the right direction?
I'm not Dutch so I used Google translate and searched for "vierkante ventilator" (no ideas if it is correct but it worked). Look at image results for a quick overview. I also got interested and found this one:
https://www.biltema.dk/en-dk/construction/fans/floor-fans/fl...
Re: Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test
#526Earlier quoted context omitted.
> Any kind of smoke hangs around in a room for many hours well past when you can smell it. But once the sensors indicate that the PM2.5 is gone, everything is fine, right?
If that's sarcasm, you aren't providing enough context for me to pick up what you are putting down. If not, then the honest answer is "I don't know for sure, I'm still researching it." From what I can tell, PM2.5 isn't the end-all be-all metric and sensors can give false readings. That's why I'm building multiple devices with different types of sensors and monitoring multiple metrics. PM10 and PM1.0 are also concerns…
are you able to share anything / willing to work with anyone? I'm just getting through the research phase and am looking to coat my house with sensors - its been a struggle finding quality writing in the research and it looks like a graveyard in the world of pcb design.
Re: Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test
#527Earlier quoted context omitted.
They 3d print well if you have a good printer. I've seen designs that use standard size computer fans, which make them cheap and easy.
I wonder if the porous surface of 3D printed materials affects the airflow
You can coat them - and should, otherwise dust gets lodged in and its a PITA.
Re: Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test
#528If you have a NAS or Fan cooled Server near your living area, put a HEPA filter in front of the Airflow.
Managed to find a fitting size one for my Synology one that can simply be affixed by making an impromptu collar out of half-folded wide duct tape around the front.
PM 2.5 dropped down from 25 to 5. Temperature increase is neglegible and well within safe range.
Plus you get no dust in the device itself, which was my motivation for this in the first place.
Re: Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test
#529If you have a NAS or Fan cooled Server near your living area, put a HEPA filter in front of the Airflow. Managed to find a fitting size one for my Synology one that can simply be affixed by making an impromptu collar out of half-folded wide duct tape around the front. PM 2.5 dropped down from 25 to 5. Temperature increase is neglegible and well within safe range. Plus you get no dust in the device itself, which was m…
Interesting. Do you think it would still be effective to purity the room air when done on a desktop computer with a single 120mm intake fan (and a 140 exhaust though I assume there wouldn't be a filter on that)?
Re: Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test
#530Earlier quoted context omitted.
I just feel bad for all the kids who won't feel the joy of talking into a fan and making a funny voice :(
too many things have been lost or gimped. Chemistry sets, m-80s, model rockets, playgrounds, coaster brakes, whatever kids did before "play dates" and anything intricate with small parts.
There were probably too many things lost from "our" (n-1th generation) childhood too. Things like marveling at the first TVs, playing with unspent WW2 ammunition, etc. I'm sure each generation has its own things that they miss and think are detrimental to have lost, however I'm not sure that overall it's worse for the current generation. Hard to say. Growing up, I certainly would have loved having near infinite amounts of programming help available for free, instead of trying to decipher something from a 50-times photocopied manual. I guess some things get better, some worse, change is the only constant.