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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

#151

Post by vanadium »

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).

I've got two Blueair 121s (the larger sibling to the 211+) that were recently on sale at Costco.com for the price of the 211+. My family could sense the difference in air quality within a couple hours.

I can't say that about any of the prior purifiers we've tried.

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

#152

Post by joncrane »

Karawebnetwork wrote: post #61
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…

I live in a large loft-style apartment on two floors which is actually a large room. There are only a few windows and they are placed in a way that no air draft gets created. When I bought a purifier, one of the things I was looking for was air movement. I position my Dyson so that there's a draft throughout the apartment. I thought this would improve the air filtration because the air would move through my home and…

Why wouldn't you just use a cheap fan in place of the Dyson? Sounds like you have a separate purifier that does the cleaning, and all you need is something that will move air.

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

#153

Post by xyzzy_plugh »

odux wrote: post #119
Aunche wrote: post #109

Earlier quoted context omitted.

> 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? Dyson fans produce a continuous stream of air. Regular fans produce choppy air. I don't think anyone actually notices this effect until you point it out though.

And, in my experience, a lot of noise. Way more than a regular fan for the same perceived amount of air flow.

What? My Dyson fan is incredibly quiet compared to any other fan I've used.

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

#154

Post by TeMPOraL »

hoytschermerhrn wrote: post #137
ortusdux wrote: post #89

Earlier quoted context omitted.

My issue is the cost. My local costco has these units in store for $800 USD. Further down the isle they have oscillating tower fans for $30, and smart air filters for $100. I bought two pairs of each before winter. The fans are quiet, have plenty of control options, and non-volatle memory so you can use them with smart plugs. The air purifiers are 4 stage, with active charcoal and a long life (6 mo, 20$) hepa filter.…

Dyson, like Apple, doesn’t make products for nerds like us who are willing to go through that level of effort. Their prices are high because their products are simple and “just work” without much fiddling.

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

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

#155

Post by xyzzy_plugh »

mminer237 wrote: post #120
crmd wrote: post #82

Earlier quoted context omitted.

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 reminds me of a less-extreme version of Juicero. They made a $700 WiFi-connected "juicer" that squeezed bags of juice using QR codes to scan the bags and then a custom power supply, custom machined gears, and a custom 15A 330V DC motor to actuate a press to squeeze the bags between two metal plates. Of course, a roller could have done it for a fraction of the price, or you could have just let gravity pour the juic…

In the case of the hair dryer, it really is much more efficient than any competitor. My wife saves 5+ minutes a day over other hair dryers.

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

#156

Post by unwind »

bluGill wrote: post #145
LegitShady wrote: post #106

Earlier quoted context omitted.

I prefer the Excel XLERATOR hand dryers, and usually spec them over most other models. Hands dry in ~10 seconds, not spashing onto a lower surface, etc.

I hate them because they are too loud. Sure they work fast, but I need to put air plugs in before using them, and those are never provided.

*Ear plugs, hopefully. :)

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

#157

Post by f430 »

People are surprised that people are overpaying for a brand premium for a dismal product like Beats headphones.

How else will Mr. Dyson be able to afford an 8~9 digit Singaporean penthouse?

Certainly didn't become a billionaire by building an affordable, efficient working product and not using misleading marketing to obfuscate the short comings.

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

#158

Post by BHSPitMonkey »

kevstev wrote: post #129
SeanLuke wrote: post #35

Earlier quoted context omitted.

The nonsensical Dyson canister vacuums are the ones that amaze me. Dyson competes based on premium coolness, so just consider at its primary coolness competitor: Miele. Across the board, Miele canisters are lighter, more powerful, cleaner, and much more effective than their Dyson cost equivalents. They have a far lower failure rate and last much longer. Bagless canisters have so many negatives compared to bagged vacu…

Do you have any more info to back this? I am honestly curious- I bought a Dyson Animal about 12 years ago now, and its still going strong, and is the best vacuum I have ever used. Not having to keep bags around is nice too. Our usecase is relatively light- we have area rugs mostly, but its still head and shoulders above the previous vacuum we had, and any of the ones my parents had growing up.

The common reason I see for vacuum enthusiasts bashing on bagless units is air hygiene; as soon as you take out the canister, you're releasing a bunch of the vacuumed matter back into the air and breathing it into your lungs. This can probably be mitigated by carefully emptying the contents outdoors, but a lot of apartment-dwellers can't really do that.

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

#159

Post by evancordell »

mminer237 wrote: post #120
crmd wrote: post #82

Earlier quoted context omitted.

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 reminds me of a less-extreme version of Juicero. They made a $700 WiFi-connected "juicer" that squeezed bags of juice using QR codes to scan the bags and then a custom power supply, custom machined gears, and a custom 15A 330V DC motor to actuate a press to squeeze the bags between two metal plates. Of course, a roller could have done it for a fraction of the price, or you could have just let gravity pour the juic…

AvE has a good teardown of juicero[0] as well, of course.

[0]: https://www.youtube.com/watch?v=_Cp-BGQfpHQ

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

#160

Post by fireattack »

budlightvirus wrote: post #105
JohnBooty wrote: post #60

Earlier quoted context omitted.

We have four in our house and they are workhorses. Still running strong and quiet 3-4 years later of running 24/7. Probably one of the best things I've ever bought. They are also popular enough, and have been around long enough, that there is an "ecosystem" of third party replacement filters that are affordable and capable. The sound of the Coway is also quite nice for sleeping in our opinion. It's a quiet "whoooosh"…

What benefits do you feel from having four filters? Not hating, genuinely curious. It's just never occurred to me to filter the air in my home aside from burning something on the stove or similar

I'm also curious about running them 24/7.
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