The unbeatable feature of the dyson is how quiet it is. Is there an air purifier on the market than can give more that 200CFM of Airflow at an noise output of 58.4dB or less? And the answer is apparently no. Correct me please if i am wrong. So in the end maybe there are purifier that deliver more airflow but because of the noise you will almost always run them at a lower speed, so the higher airflow is not usable in everyday life.
The Dyson outputs at approx. 200 CFM on its highest fan speed with a measured noise output reading of 58.4 dB. There are several high airflow units on the market that output at similar or even more airflow on lower fan speeds and are considerably quieter on those settings. For example, the Medify MA-112 outputs at approx. 250 CFM on its lowest fan speed with a measured noise output reading of only 49.2 dB.
@@consumer-analysis you are the gold standard for these reviews, so please don't stop! I used your link (hopefully it was a referral link) to by the Winnix from Amazon, which was just delivered and is now running in the nursery!
@@John-dk3wj Yes because it's the exact same as BPO4 only without the formaldehyde filter for $500 cheaper and without the formaldehyde filter the unit will blow more air
Unfortunately you are wrong for dismissing the significance of air projection to stimulate whole room circulation. Though over long periods of time the absence of proper circulation will not prevent whole room purification, areas of a room with a higher density of problematic air will remain above ideal levels for much longer in the absence of strongly circulating air. CADR testing procedures require a fan to be circulating the air within the test chamber for exactly this reason. When you take into consideration the fact that the most impactful instances of the degradation of air quality come from localized areas, such as the kitchen where you’ll often see particulate counts very suddenly jump into the clinically significant range, the turn-key approach to ensuring rapid purification by ensuring circulation as a built in function of the machine is pretty remarkable. Also take into account that using a 110v fan to circulate the air while your traditional purifier is running would cause a huge increase in energy consumption and noise output. Love the channel but this is a disappointing review.
Thank you for your feedback. However, I have quite a bit of hands-on testing and research that support the claims that I make in this video. I've ran several tests in a large room placing a particle meter in different parts of the room at different distances away from the air purifier, and all of those tests have showed that particle concentration drops at the same rate throughout such a room independent of the distance away from the air purifier. This indicates to me that air projection has little to no impact on air purification over larger distances. If it did, I would get lower readings at a closer distance to the air purifier. And that simply doesn't happen in the real world, at least not according to my testing. Furthermore, I've done extensive research of particle science, and all of that research indicates to me that smaller particles diffuse readily even in a large space. It's true that larger particles don't diffuse as readily, but most unwanted particles are very small and those diffuse quite easily, again, even in a large room.
May I ask what was your baseline reading and how quickly did it take to reach baseline from the pollution event? Also what was the room size? And was it furnished?
It cleans just as quick as you would expect an air purifier with 200 CFM to clean. I list all of my latest cleaning test data near the beginning of this video: ruclips.net/video/9tA3T7AzsZ4/видео.html
Yes, it is confusing. So are a lot of other Dyson model names as well, which is why my videos comparing different submodels of Dyson cordless vacuums get so many views. 😁
Yes, it's just a larger version of the 400S. I cover these models near the start of our latest tier list video ruclips.net/video/9tA3T7AzsZ4/видео.html
An $150 in-line 6” duct fan paired with a $50 6” duct carbon filter is probably quieter at the same CFM and 1/5 the price- just uglier and not effective at filtering formaldehyde.
@@aaavin9629 I’ve used inline duct fans and carbon filters in configuring sound isolation booth ventilation. I’m pretty sure it could compete on noise. Of course, I also put a variable-speed inline duct fan inside a Rubbermaid container and covered it with kitty litter with hoses and ventilation flanges cut with saw-bits as output so I *could* run the motor faster at lower volumes, but they can be pretty quiet even without that 🤷♂️
Here I am.. watching (attentively) a video of something I’ll never buy.
Never say never
The unbeatable feature of the dyson is how quiet it is. Is there an air purifier on the market than can give more that 200CFM of Airflow at an noise output of 58.4dB or less? And the answer is apparently no. Correct me please if i am wrong. So in the end maybe there are purifier that deliver more airflow but because of the noise you will almost always run them at a lower speed, so the higher airflow is not usable in everyday life.
The Dyson outputs at approx. 200 CFM on its highest fan speed with a measured noise output reading of 58.4 dB. There are several high airflow units on the market that output at similar or even more airflow on lower fan speeds and are considerably quieter on those settings. For example, the Medify MA-112 outputs at approx. 250 CFM on its lowest fan speed with a measured noise output reading of only 49.2 dB.
Did they actually do any air filtration tests?
Is there another air purifier you recommend for formaldehyde?
How does this channel only have ~33k subscribers?!
Thank you for the kind words. Comments like these go a long way encouraging me to keep making videos.
@@consumer-analysis you are the gold standard for these reviews, so please don't stop! I used your link (hopefully it was a referral link) to by the Winnix from Amazon, which was just delivered and is now running in the nursery!
@@ab185 Awesome! Thank you for your support!
Did you know Costco sells a BP02 which is identical to the 03 only they removed the formaldehyde filter? And it is often on sale for $600.
Is that a good deal ?
@@John-dk3wj Yes because it's the exact same as BPO4 only without the formaldehyde filter for $500 cheaper and without the formaldehyde filter the unit will blow more air
@@Tar0245 so just the formaldehyde filter is the $500 price difference?
Unfortunately you are wrong for dismissing the significance of air projection to stimulate whole room circulation. Though over long periods of time the absence of proper circulation will not prevent whole room purification, areas of a room with a higher density of problematic air will remain above ideal levels for much longer in the absence of strongly circulating air. CADR testing procedures require a fan to be circulating the air within the test chamber for exactly this reason. When you take into consideration the fact that the most impactful instances of the degradation of air quality come from localized areas, such as the kitchen where you’ll often see particulate counts very suddenly jump into the clinically significant range, the turn-key approach to ensuring rapid purification by ensuring circulation as a built in function of the machine is pretty remarkable. Also take into account that using a 110v fan to circulate the air while your traditional purifier is running would cause a huge increase in energy consumption and noise output. Love the channel but this is a disappointing review.
Thank you for your feedback. However, I have quite a bit of hands-on testing and research that support the claims that I make in this video.
I've ran several tests in a large room placing a particle meter in different parts of the room at different distances away from the air purifier, and all of those tests have showed that particle concentration drops at the same rate throughout such a room independent of the distance away from the air purifier.
This indicates to me that air projection has little to no impact on air purification over larger distances. If it did, I would get lower readings at a closer distance to the air purifier. And that simply doesn't happen in the real world, at least not according to my testing.
Furthermore, I've done extensive research of particle science, and all of that research indicates to me that smaller particles diffuse readily even in a large space. It's true that larger particles don't diffuse as readily, but most unwanted particles are very small and those diffuse quite easily, again, even in a large room.
May I ask what was your baseline reading and how quickly did it take to reach baseline from the pollution event? Also what was the room size? And was it furnished?
How about real life performance? Do you have any data for how effective it clean
It cleans just as quick as you would expect an air purifier with 200 CFM to clean. I list all of my latest cleaning test data near the beginning of this video: ruclips.net/video/9tA3T7AzsZ4/видео.html
Isn’t that a bit confusing? The bp04 is a step up from the 03 but then the bp06 is a step down??
Yes, it is confusing. So are a lot of other Dyson model names as well, which is why my videos comparing different submodels of Dyson cordless vacuums get so many views. 😁
So for the price of this air purifier I can buy 6 Winix 5500 end of discussion
Can you guys do a video on the 600S? Is it just a big 400S?
Yes, it's just a larger version of the 400S. I cover these models near the start of our latest tier list video ruclips.net/video/9tA3T7AzsZ4/видео.html
@@consumer-analysis thanks
Getting you to buy expensive filters is Dyson's business model.
Is the CFM listed on max setting? how about the dba?
Yes, airflow and noise output is listed at maximum fan speed.
An $150 in-line 6” duct fan paired with a $50 6” duct carbon filter is probably quieter at the same CFM and 1/5 the price- just uglier and not effective at filtering formaldehyde.
It wouldn’t even be close on the noise front and it would also require a secondary source of room circulation to actually make full use of its CADR.
@@aaavin9629 I’ve used inline duct fans and carbon filters in configuring sound isolation booth ventilation. I’m pretty sure it could compete on noise.
Of course, I also put a variable-speed inline duct fan inside a Rubbermaid container and covered it with kitty litter with hoses and ventilation flanges cut with saw-bits as output so I *could* run the motor faster at lower volumes, but they can be pretty quiet even without that 🤷♂️
I'm convinced we have the same youtube algorithms as I've seen your comments everywhere. Chocolate rain for the win.