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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

#301

Earlier quoted context omitted.

We bought a Dyson fan when we had very small children that liked to stick their fingers into moving fan blades. It works really well for that purpose.

They’d probably only do it once. It builds character, similar to == in JS or PHP.

They'd probably do it no more than ten times.

Re: Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test

#302
post #48

Earlier quoted context omitted.

But isn't using a fan too long in an enclosed room dangerous? https://en.wikipedia.org/wiki/Fan_death

No. This is yet another urban myth. "Despite no concrete evidence to support the concept, belief in fan death persists to this day in Korea,[further explanation needed] and also to a lesser extent in Japan.[1][2][3]"

The Japanese version of that Wikipedia article has the Japanese phrase for "Urban legend" in the title, unlike the English version. The literal translation of that title would be "Urban legend of electric fan".

Re: Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test

#303

Earlier quoted context omitted.

What's being questioned here is whether this product actually works (as air filter, as advertised).

While it may not be the best, it still does the job. My partner smokes indoor when I am not present and there's no smoke odor when I get home. According to the chart on their app, the peak low air quality from several cigarettes goes away within an hour or so. https://imgur.com/a/0qgwT1F

I recently got into building DIY air quality sensors. Any kind of smoke hangs around in a room for many hours well past when you can smell it. My house periodically spikes in air pollutants (still looking for the cause but we are moving soon anyways). The one night when PM2.5 spike from safe levels of below 12 ug/m^3 to over 1000 for one night was the worst sleep everyone in our house got. It seems that it was the equivalent of smoking something like 44 cigarettes in a day. Don’t smoke, especially indoors. It’s a bad time.

Re: Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test

#304

Dyson : Air Products :: Beats : Audio Products Pretty much every Dyson product I've used, from the public bathroom air "blades" to the vacuums, seem like a gimmicky, inferior products with a premium price tag. None of them do their intended job better than older, cheaper products in their category. I know James Dyson is regarded as a genius engineer, but the consumer product company bearing his name seems to be 99% m…

I thought that until I came to own a dyson ball vacuum for free. My lord. If a hoover/shark/whatever is a 25 year old toyota corolla, this is a brand new rolls royce and feels like it. It's extremely powerful despite being used, and collects a frankly disturbing amount of dust and hair every time I use it (picking up about a full chamber of hair from my longhair cat some times, hair that was invisible to the eye on the rugs before vacuuming). Pretty much every other vaccume I've had turns to hell in a few years with the poor build quality and dealing with my cats hair, but this is a tank in comparison and has tumbled down stairs. The ball system is actually pretty nice and easy to push around, and the low center of gravity helps with balance as well. It's loud, but not nearly as loud as my old vaccuum (my cat doesn't run away). Maintenance is extremely user friendly and easy; I had the whole thing apart to clean the filters without looking at a manual, just moving bits of plastic conveniently colored red so you know they are there for you to move or remove.

But none of this is something you would notice from a sexy ipod-esque ad. All of this you pick up on after you start using the tool. Then it makes perfect sense why this is such a good vacuum and well worth the premium relative to other offerings on the market.

Re: Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test

#305
post #14

Dyson : Air Products :: Beats : Audio Products Pretty much every Dyson product I've used, from the public bathroom air "blades" to the vacuums, seem like a gimmicky, inferior products with a premium price tag. None of them do their intended job better than older, cheaper products in their category. I know James Dyson is regarded as a genius engineer, but the consumer product company bearing his name seems to be 99% m…

I love the public bathroom Dyson thingies. They kinda became a standard for me now, love how quickly they dry hands. Way better than paper, towels or weak fans. But yeah, the other stuff is a bit gimmicky.

[deleted]

Re: Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test

#306

Earlier quoted context omitted.

Unless I'm at the library or a Starbucks, I generally don't wear the kind of clothes in public that one wipes hands on.

I had to read this comment like 3 times to parse it... and I'm still not sure I get it Wiping your hands on your pants when there's towels or something is kind of silly, but how on earth does the article of clothing define if you can wipe your hands on it? Are you wearing vinyl pants or something?

It’s a very intriguing post. I, too, have been trying to work out its logical ramifications. I feel, perhaps, that the poster may, at any given time, be in possession of two sets of clothing.

Re: Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test

#307

After 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?

Re: Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test

#308

Earlier quoted context omitted.

While it may not be the best, it still does the job. My partner smokes indoor when I am not present and there's no smoke odor when I get home. According to the chart on their app, the peak low air quality from several cigarettes goes away within an hour or so. https://imgur.com/a/0qgwT1F

I recently got into building DIY air quality sensors. Any kind of smoke hangs around in a room for many hours well past when you can smell it. My house periodically spikes in air pollutants (still looking for the cause but we are moving soon anyways). The one night when PM2.5 spike from safe levels of below 12 ug/m^3 to over 1000 for one night was the worst sleep everyone in our house got. It seems that it was the eq…

> 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?

Re: Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test

#309
post #138

Earlier quoted context omitted.

Are they? We have a modern unit (with the 2 stage filter), adn they send a notification when you have to buy a new one, for $99 CAD

The company famed for creating bagless vacuums added a 'bag' to a product that doesn't necessarily need it? Dyson's stance on Brexit makes ever more sense... .

Having just gone back to a bagged vacuum, I genuinely wonder why people ever accepted bag-less vacuums in the first place.

Aside from the “empty the canister out and watch all fine dust float back into my house” issue, vacuum bags function as one massive filter. It’s not physically possible to build a filter into a bag less vacuum that approaches the size or capability of the vacuum bag itself.

Re: Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test

#310

Earlier quoted context omitted.

15 x 7% = 105% Obviously that's not how those numbers work, but you get the idea: it's not necessary to filter all the air at once.

I rounded up to be generous.

1. I concluded that's what you did, but found it a bit annoying. 100x15/16=93.75 . I find it unnecessarily confusing (as the parent commenter probably did) to round it to 93, when the correct rounding is 94.

2. The article says "15x more", so the right math would be 100x16/17=94.12 .

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