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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

#481

Post by bostonsre »

ortusdux wrote: post #4

I still cannot get over this product. They whole selling point of a dyson fan is the 'air multiplier' tech, which creates a low pressure zone that propels air through the ring. According to dyson, this tech can move 15x more air than the fan in the base of the unit. Why in the world would you build an air filter around a system that does not directly interact with 93% of the air it moves? https://www.jameco.com/Jamec…

Their app and particulant metrics/ graphing are kind of neat and user friendly. You can do stuff like have it run on a schedule or run when air quality gets below a certain threshold. I knew that there were better cost for air purifying options out there, but the metrics and graphing kind of sold me.

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

#482

Post by bostonsre »

gonehome wrote: post #206
ortusdux wrote: post #4

I still cannot get over this product. They whole selling point of a dyson fan is the 'air multiplier' tech, which creates a low pressure zone that propels air through the ring. According to dyson, this tech can move 15x more air than the fan in the base of the unit. Why in the world would you build an air filter around a system that does not directly interact with 93% of the air it moves? https://www.jameco.com/Jamec…

The fan also sucks compared to something like a Vornado. "Buffeting" of air is not a practical issue when using a fan - you want a fan that can create a lot of air flow. The Dyson fan comes across form first then making up reasons to explain the form retroactively. It feels like an interesting look is the goal rather than something that's actually better. Am I wrong about this? Do people that have the fan like it? Is…

Their app and particulant metrics/ graphing are kind of neat and user friendly. And I don't know, it's furniture kind of. Some people buy expensive furniture because it looks nice, some because it's comfortable and some don't bother and just use a milk crate.

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

#483

Post by 8bitsrule »

I'm a function over form kinda guy, and a filter (cleanly) duct-taped to a $20 box fan has functional, eco- and prudential beauty. The money saved on the Dyson will buy MANY houseplants. And replacement filters.

But then I'll never live in a $3M home or entertain guests wearing tuxes. No need for a whisper-quiet fan because in-house string quartets. Like Apple, Dyson's selling 'purdy'.

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

#484

Post by kovac »

dwaite wrote: post #301
WiseWeasel wrote: post #291

Earlier quoted context omitted.

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.

If you are really committed, you should be able to go up to at least 20 :)

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

#485

Post by casion »

ListenLinda wrote: post #357
post_break wrote: post #2

I bought an expensive Dyson air purifier for a couple of reasons. It has a remote so I can turn it on from bed. It looks attractive. The sound profile is much different than a box fan for sleeping at night. It can analyze the temperature, humidity, and air quality in real time and turn on if it notices air quality is getting bad. It also oscillates. That said yes it was expensive, but it replaced needing a fan for co…

Compare to your furnace (on fan mode) + air filter ... > It has a remote Check > It looks attractive Check. It's invisible. > sound profile Check. Furnace fans are in the garage. > analyze the temperature, humidity, and air quality Nope. But purpleair will sell it to your for $175. > oscillates Check. Covers entire flat.

Uh, mine doesn't have s remote, It's visible in living space, loud and doesn't effectively circulate all rooms.

I suspect that you're fairly lucky.

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

#486

Post by andbberger »

pjkundert wrote: post #452
ortusdux wrote: post #4

I still cannot get over this product. They whole selling point of a dyson fan is the 'air multiplier' tech, which creates a low pressure zone that propels air through the ring. According to dyson, this tech can move 15x more air than the fan in the base of the unit. Why in the world would you build an air filter around a system that does not directly interact with 93% of the air it moves? https://www.jameco.com/Jamec…

No open air filter system interacts with more than a small volume of the air in a space! So long as it cycles the air frequently enough, eventually it will capture particles proportional to its basic filtration capability.

Yeah that's not true, diffusion exists.

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

#487

Post by ortusdux »

bostonsre wrote: post #481
ortusdux wrote: post #4

I still cannot get over this product. They whole selling point of a dyson fan is the 'air multiplier' tech, which creates a low pressure zone that propels air through the ring. According to dyson, this tech can move 15x more air than the fan in the base of the unit. Why in the world would you build an air filter around a system that does not directly interact with 93% of the air it moves? https://www.jameco.com/Jamec…

Their app and particulant metrics/ graphing are kind of neat and user friendly. You can do stuff like have it run on a schedule or run when air quality gets below a certain threshold. I knew that there were better cost for air purifying options out there, but the metrics and graphing kind of sold me.

The filters I got at Costco for $100 on sale have these features too. https://imgur.com/a/ntgCwbl

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

#488

Post by brian_cunnie »

tw04 wrote: post #435
Judgmentality wrote: post #324

Earlier quoted context omitted.

Plenty of people raise their kids this way. When I see parents laugh when their kids fall down instead of panic, I smile. And the best part? The kids smile too, because they're actually looking to their parents for how to react. I'd rather raise daredevils than anxious wrecks. My best friend has a kid who's always climbing on stuff, falling down, getting hurt. That kid is going to grow up to be awesome.

Plenty of people need to rethink their parenting then. I laugh when my kid falls down. I scream when I saw my kid trying to stick a key into an electrical outlet, and I screamed when I saw my kid trying to put a finger into a vornado fan. Modern fans aren't the same as the box fans we grew up with. And adult would likely walk away with an emergency room bill and a bunch of stiches. A small child would likely lose a f…

I didn't put a key in an electrical outlet, but in Paris when I was a kid I was having trouble sticking the plug in the 220V outlet so I held it tight by the prongs & plugged it in & boy did that feel weird. I never did that again.

I never told my parents about it because I would have gotten yelled at.

At camp we put crickets on the electric fence, but nothing happened to them, so I grabbed the electric fence, and that was a powerful jolt. I never did that again, either.

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

#489

Post by rkagerer »

danans wrote: post #264

Some of the best air filtering systems (and also among the most expensive) are systems like the IQAir [1], which are essentially boxes with a fan at one end and a series of filters arranged in an alternating diagonal pattern: Note: / and \ are each separate filters Filter box ___ | \ | Inflow --> / --> Outflow | \ | | / | ‾‾‾ This maximizes the filtration while reducing the static pressure, since the filtration is di…

How do you think their standalone purifiers, like the IQAir Health Pro Plus, compare to the smaller Blueair Blue Pure 211+?

The article measured a CADR on the Blue Pure of 325cfm, while some hits on Google show a CADR rating of 300 cfm for the IQAir one. I'm mainly interested in filtering pet hair, allergens, viruses and SLA 3D printing smells.

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

#490

Post by wincy »

gmfawcett wrote: post #102
wincy wrote: 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

To the downvoters on wincy's comment: please let's not downvote people for asking questions, or just because you believe they are misinformed -- that's what replies are for.

To be fair, I was bored at work and wanted to see what would happen if I brought up fan death on Hacker News.

I’m not Korean, but used to work at a company with quite a few second generation Korean Americans and we’d have Korean students studying in the US we hired as interns. They were very bright and very polite, but if we brought up fan death they’d say “oh haha yeah it’s funny... but it might be true”.

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