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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

#91

Post by postalrat »

crmd wrote: post #82
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…

Check out AvE’s tear down of a $500 Dyson hair dryer.[1] He was expecting to ridicule it but was instead blown away by the engineering - tiny high torque zinc cast brushless DC motor, CNC-milled impeller, etc. It’s a good watch, including FLIR performance analysis, Fourier analysis of bearing noise, and more. In summary it’s definitely more engineering porn / extreme overkill than marketing bs. [1] https://youtu.be/j…

It seems like dyson focuses on over optimizing for problems that they themselves create.

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

#92

Post by mywittyname »

crmd wrote: post #82
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…

Check out AvE’s tear down of a $500 Dyson hair dryer.[1] He was expecting to ridicule it but was instead blown away by the engineering - tiny high torque zinc cast brushless DC motor, CNC-milled impeller, etc. It’s a good watch, including FLIR performance analysis, Fourier analysis of bearing noise, and more. In summary it’s definitely more engineering porn / extreme overkill than marketing bs. [1] https://youtu.be/j…

Dyson products are like the Juiceros. They are masturbatory exercises for engineers. They get to design a product with an almost limitless budget, functionality be damned.

We're all guilty of that too. I bet most of us would love a job where you get to play with cool tech all day and not really worry about how efficient the program is.

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

#93

Post by praveenperera »

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…

I think that maybe be true for some of their products, but when it comes to cordless stick vacuums Dyson is still king.

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

#94

Post by JamesSwift »

duxup wrote: post #20
dominotw wrote: post #5

Earlier quoted context omitted.

I currently use dyson v11 cordless vaccum. I am in the market for a new one, what do you recommend instead ? Price is not too much of concern for me ATM.

I've had a good experience with a Shark vacuum. It had high ratings from Consumer Reports. I bought one and found it did a great job with heavy carpet and rugs, and wood floors. It is easy to take apart, clean, etc.

Our Shark just died but it served honorably for about 10 years if I remember correctly. It was very affordable when we got it as well.

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

#95

Post by cowmoo728 »

rconti wrote: post #75
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, pe…

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 48 hours and see what the steady state particulate levels settle at around the house. I would guess that over a certain threshold CADR, there might not be that much difference. Room air circulation combined with a good enough CADR might even be more important, which is what Dyson claims.

For all the people in the bay area worried about the next fire season, CADR is probably the most important since there's an extreme source of particulates. I'm just not sure that's the final say on air purifier effectiveness in less extreme conditions.

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

#96

Post by belval »

beefalo wrote: post #83
tidepod12 wrote: post #16

Earlier quoted context omitted.

Yea, it's weird reading this thread to me. I have a cordless Dyson vacuum and it is by far the best home vacuum I have ever used, both in terms of suction power (even compared to non-cordless ones) and in terms of other usability/features.

I think Dyson benefits from the same effect as Apple/Tesla/Beats/etc. Their products are good but their triumph is upselling. Dyson cordless vacuums are like $800+, was your previous one that expensive?

My dyson cordless vaccum (v7) was 399$ (CAD) so it was not insanely expensive and I would not go back.

Their tech can probably be imitated at a lower cost, but I won't take chances with the cheaper knockoffs, the tradeoff is not worth it.

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

#97

Post by radicaldreamer »

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…

For recurring revenue… selling only the fan, you get one sale and you’re done. Selling the fan but with a filter unit, some subset of customers will replace the filter every 6 months as “recommended” and you have recurring revenue on that fan forever.

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

#98

Post by mywittyname »

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…

My cordless Dyson (V10 Animal, I think) is strong enough to get stuck to the carpet on the highest power setting. I won't use it past medium because I'm afraid that it will tear up the carpet.

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

#99

Post by mminer237 »

ortusdux wrote: post #56
mmastrac wrote: post #50

Earlier quoted context omitted.

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]"

IIRC, this myth stems from a successful govt propaganda campaign that aimed to reduce power usage at night and put an end to rolling blackouts.

The Wikipedia article cites that as being yet another myth, although it is disproven by evidence of belief in fan death long before the blackouts.

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

#100

Post by laurent92 »

dyno-might wrote: post #84

I did a bunch of tests with a similar filter (albeit comparing to a cheaper commercial purifier) https://dynomight.net/2020/12/15/some-real-data-on-a-DIY-box... It's crazy that commercial manufacturers usually don't even attempt to provide data like this to show that their products actually, you know, work.

This. Instead, they’ll come up with whatever irrelevant metric like measuring purification power in Watts.

All we want to know is asthma per hour in the room, and cancers per years in that city ;)

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