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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

#71

Post by ortusdux »

TheSpiceIsLife wrote: post #68
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…

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.

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

#72

Post by hansvm »

Box fan filters are great. The fans aren't really designed to operate with much load, so I had issues with the motors burning up eventually (3-12mo) when trying to force air through too fine of a filter (somewhere around merv 15 iirc, taped at the edges to prevent air from going around).

In college I had a _really_ cheap flat, and all my neighbors were chain smokers. I didn't realize quite how bad it was in my apartment (large gaps under the door, etc) till a classmate pulled me aside and asked how long I'd been smoking -- apparently the residue on my clothes was easy for anyone with a functioning nose to recognize when I walked nearby. Long story short, box fan filters completely fixed that problem, and as an added benefit you could set one up next to any cooking disasters and watch the smoke get pulled from the air.

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

#73

Post by ghaff »

vhost- wrote: post #67
sdfhbdf wrote: post #13

Earlier quoted context omitted.

Interesting since the cordless vacuum (dyson v11) I use at home seem to work really well. The previous big corded model we had (Dyson DC33) was also built like a tank and served for almost 10 years before being passed on and still works so maybe I bought into marketing or maybe just different people have different experiences with Dyson products?

If Dyson had to choose one product to keep making, but discontinue all others, it should be the V11 vacuum. Runs forever and cleans very well. All their other shit can kick rocks.

I have one of their circular fans in my bedroom. It's got a remote, it's quiet. Yes it's expensive but it's definitely better than the cheap fan I used to have there.

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

#74

Post by numpad0 »

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…

Fan intakes on non-purifying Dyson do get plugged with dust over time, so it makes sense to add filters. Aside from whether it makes sense to advertise them as air purifiers.

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

#75

Post by rconti »

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…

It's obviously popular to hate on silly-expensive tech, but these quotes were telling for me:

> "I think what we're trying to do is pull back a little bit from the CADR metric," he said. "Not everyone needs an enormous CADR, has huge rooms or incredibly dirty air."

> Several experts told Marketplace the CADR is the most important metric and an internationally recognized benchmark.

> "CADR is what you want to know, period," said Francis (Bud) Offermann, an indoor air quality researcher who has helped develop test methods for the performance of portable air cleaners with the American Association of Home Appliance Manufacturers (AHAM).

CADR may well be "what you want to know, period" when it come to air filtration. However it might NOT be all you want to know when buying a consumer product. If the filter is quiet and effective and good looking and only ramps up when needed, is this not in some ways a better PRODUCT than a box fan running at full speed all the time with a filter taped to it?

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

#77

Post by clairity »

syntaxing wrote: post #21

I always treated my Dyson purifier as a fan that happens to clean the air a little. I leave the real heavy lifting to my Blueair purifiers which my taped up box fan purifiers cannot beat (I measured the 2.5um output during the wildfires).

to add on, it helps in some cases to have another fan or two to move air (and dust) to your air purifier. i have 2 blueairs (211+ & 411 auto) and they do a decent job cleaning by themselves, but the fans aren't powerful enough even on high to draw all the crap being constantly kicked up farther than a few feet away without extra help.

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

#78

Post by sjg007 »

phatfish wrote: post #32
AlexandrB wrote: post #3

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…

Dyson the person had one very successful idea (the bagless vacuum) and brought it to market himself after being ignored by the then-incumbent manufactures of existing models. Dyson the company has been riding that one idea since, and I agree the rest of their products are over-priced luxury items. In fact their vacuums are over-priced as well now. Dyson rubs me the wrong way as well personally by purporting to be a "…

He started with the ball barrow but I have a dyson vacuum and it's OK. The main part does have a lot of suction that I am pretty sure is eating the carpet. The wand stick thing attachment though is absolutely the worst designed product ever produced. It's impossible to wield and bend into tight spaces. The vacuum itself is just too heavy as well. I'll go with an upright bagged version though for better Hepa filtering or a canister in the future.

Dyson really does have good marketing though.

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

#79

Post by SaintGhurka »

ghaff wrote: post #62
ljf wrote: post #34

Earlier quoted context omitted.

We must have had a dud as we got the Dyson animal hair one and it was terrible. Battery life was rubbish, the suction was crappy and the pick up just wasn't that good. Ended up getting a gtech which was fine for 2 adults in a small 2 bed house with wooden floors, but now we have kids and a bigger place we got a Shark corded and it is amazing. Literally the best vacuum we've ever owned.

I'm not sure the cordless Dyson I have compares well to a good corded vacuum cleaner for cleaning power. But for me, I got one a couple of years ago (after thinking about getting a Roomba for the umpteenth time and concluding it wasn't for me) and it's been perfect for my use case. I normally have a housekeeper come by once a month. But the high traffic areas including the kitchen really need a quick vacuum now and t…

Same experience for us. The cordless Dyson is a lesser vacuum cleaner compared to our old corded hoover. But it's light, it's easy to grab from the charger and you don't have to deal with a cord, so it gets used more. It just removes all the friction from the chore.

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

#80

Post by KaiserPro »

cpmsmith wrote: post #57
newsbinator wrote: post #17

Earlier quoted context omitted.

Those bathroom hand dryers do spread bacteria around at an alarming rate: https://www.health.harvard.edu/blog/the-bacterial-horror-of-...

> the researchers attached high-efficiency particulate air (HEPA) filters to the dryers, which would eliminate most of the bacteria from the air passing through the dryer. As I recall, one of the selling features of the Dyson Airblade is that it has a HEPA filter built-in.

they might have a hepa filter, but the output drags a tonne of air with it. They are pretty unhygenic, but I'm not sure how bad it is compared to having wet hands.
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