Is the CADR Rating Important? NOPE! It's GARBAGE!

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Күн бұрын

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Is the CADR Rating Important?
Get a Free Air Purification Recommendation for your environment at: AirPurificationEducation.com
Timecodes:
0:00 - Intro
0:46 - #1 They only test the units for 20 minutes
1:29 - #2 They do NOT test for Ultrafine Particulates
1:54 - #3 The CADR Testing Chamber does NOT represent a typical Real World Environment
3:16 - #4 Air Purifier CFM Specifications are typically OVERSTATED
4:27 - #5 Many of the BEST Air Purifiers DON'T have a CADR Rating
7:21 - Summary
Hello my name is Doug - and I want to talk about the relevance of the CADR Ratings for air purifiers: CADR stands for Clean Air Delivery Rate and it was developed by AHAM - the Association of Home Appliance Manufacturers in the 1980s. It was supposed to help the general public evaluate air purifiers. Unfortunately, it has many weaknesses and I would never refer to it when consulting with customers for the best solution for their needs.
Here are just some of the problems associated with The CADR Ratings? 1) CADR only tests performance for the first twenty minutes of operation. Most all air purifiers decline in performance over time - many start to decline after only one hour. The more dust that builds up inside many
units makes it easier for the dirty air to bypass the filters. Some air purifiers can lose even 50% of their effectiveness over just 8 weeks so a 20-minute test on a brand new air purifier with brand new filters is not indicative of how the unit will actually perform for you on a day-by-day basis.
2) CADR does not test for Ultrafine particles - smaller than .1 Microns - and .1 Microns make up 90% of all the particulates in the air that we breathe and they pose the biggest health risk. Our bodies are amazing and our natural defense systems are decent at protecting us against larger particulates . It's the smaller particulates that are able to more easily navigate our natural defenses.
3) The CADR Chamber ain't perfect. The CADR test takes place in a very small chamber (11' x 11' x 8' room) - I can say less than 5% of the people I consulted with over the past 15 years were looking for a solution for only 121 sq. ft. - that would typically be someone in their own little office - but it definitely does not represent the typical environment for the vast majority of consumers... with the air purifier in the middle of the room - Is the CADR Rating Important + an overhead fan to distribute the air - also atypical and the chamber only has 1 sensor. Is the CADR Rating Important
4) CFM Ratings on air purifiers from manufacturers are oftentimes Not Accurate: I personally don't think the CFM (Cubic feet per minute) ratings that we see on the air purifiers are actually the true performance ratings of the units. I was in a meeting with a fan engineering expert a few years ago - and his job was to test fans for a manufacturer and help come up with better fan performance for their products and he said most all the CFM ratings that we see on products are inaccurate. The products almost never perform at the CFM level the manufacturers say they do. So I almost always would tell people to subtract 20% or even more, off the 'official' cubic footage area that the manufacturers say their products can accommodate. If they can it can do 1000 sq. ft. - I'd guess that means it will probably do more like 700 or so... but it depends on some variables. Manufacturers are somewhat forced to increase some of the numbers on their specs. once their competitors do - so they can remain competitive.
5) many of the best air purifier units on the market don't have a CADR rating.. for example, Austin Air is an American-manufactured air purifier and I have 3 of them in my house for about 15 years and they don't have a CADR rating. IQAir doesn't have a CADR Rating on their units and I own the IQAir brand, as well... - and IQAir was well known in the industry as the best air purifier in the US for particulate filtering for over 15 years. IQAir creates world-class air purification solutions. but basically, ya know if companies like IQAir and Austin Air don't have CADR ratings and I've purchased both - because I know they are some of the best solutions on the market... that should tell you something. Even Dyson has said the CADR ratings are not based on real-world environments and they've come up with their own testing methodology for air purification and we could go on and on but we'll stop here.. So, in summation..So please let me know if you have any questions for me - you can leave them below and I'll try to answer them... you can get a free email consultation with me at AirpurificationEducation.com and thank you so much for watching this video - I hope the content is useful. Until next time - have a great day! Is the CADR Rating Important

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@AirPurificationEducation 2 ай бұрын

👉FREE Air Quality Solutions Guide: midd.me/euyH 👉BEST AIR PURIFIER RANKINGS: airpurificationeducation.com/asthma-allergies-and-dust-particulates-in-general/

@raghavtakiar Ай бұрын

What would you recommend about dreo mc710s does it have a good filtration system?

@AirPurificationEducation Ай бұрын

I do not have direct experience with the product but my knee jerk opinion based on their website: www.dreo.com/products/purifier-tower-fan-mc710s is that these guys make a lot of different products but the best air purifiers are made from companies that only manufacture air purifiers like IQAir, Austin Air, Airpura, Aeris, Camfil... so looking at this fan purifier - seems like a similar product to the Dyson fans which are not really good air purifiers... so I don't think this product will do a very good job of filtering based on those reasons. Thanks!

@joshuau. 6 ай бұрын

Great video! I wish there were better ratings available to consumers!

@AirPurificationEducation 6 ай бұрын

Thank you! I think it is kinda tricky and even expensive to really test air purifiers. They really need to be tested after they've accumulated dirt in their filters after 3 months or so, I think. Plus, it is reallyk hard to test for ultrafine particles accurately sooo... Thanks!

@MS7.7 Жыл бұрын

Dude I find in the comments but I would've never found your channel and the algorithm never showed it to me. As a fellow engineer I'm very sick of watching a million videos praising POS purifiers and not even knowing anything about the real numbers and how good is the filter. I guess that's what the audience wants and we cannot change that, also many people don't want to pay money for something that they can't feel or see results immediately. air is invisible so is PM 10/2.5 so its hard for them to believe and sell air. I don't blame them to be honest. thank you so much keep it up. I myself bought Philips 1000i series 2 days ago hahahaha I guess I don't want to pay big money either but for me I will do testing the next few weeks and months and then look for more expensive better solution. Also a lot of people forgetting the importance of humidity which air purifier is said to give dry air by some folks and I don't have proof for it, my area is very humid so I can't tell.

@MS7.7 Жыл бұрын

Also I made so much research on Philips and data is inconsistent and scarce just marketing gimmick, I know it will do its job but I need to know real numbers. Also I noticed they have changed so many things over the years internally but keeping the same model and appearance which make it more confusing especially if you bought older model without knowing. Or I watched video from America reviewing same model but I'm in different continent and the same model is available in my country but different on inside like Fan motor wattage is different, number of filters changed and the actual quality and density changed without them saying anything!! Also some features could be available or missing makes me want to pull my hair.

@AirPurificationEducation Жыл бұрын

I was 'Shocked' when I first started to watch air purifier videos on KZfaq about a year and a half ago. I literally got angry at what I was watching - and that is what really got me to start this channel. You are so correct - it is very HARD to differentiate between the quality of units when you cannot see the improvement with your eyes... so I see why all these purifier companies do tests with smoke in chambers, etc. But now, folks think if the unit 'purifies' the smoke in the chamber - and they cannot see it anymore - then that must be a good unit. So, the marketers are really preying on this type of 'test' and other type of stuff. I will eventually make content on it but I have another YT channel I am also working on so these things take time - unfortunately. Thank you for your comments! 👍

@derHolzstift 17 күн бұрын

Intersting video, i ask me how i should interpret the message: only loooking for CADR is surly not the way but when other factors like filtre layers, EN1822 certificate are excellent AND the CADR Rate is outstanding good then i don't think it hurts to involve the CADR rate, what is your point of view?

@AirPurificationEducation 16 күн бұрын

Yeah, there is a lot to it, I think. 1) CADR rating only tests brand new air purifiers for 20 minutes but the units leak dirty air more so as the filters get dirty through use of weeks and months. So, we have no idea how the unit will actually filter after a month. 2) EN1822 and 3rd party lab testing can't even be trusted as some of the labs are getting paid to create bogus results to make some of the air purifiers appear to be better at filtering than they actually are... Basically, there is corruption in the testing industry. 3) CADR rating does not test for the most dangerous particles in the air - the Ultrafine Particles and they account for 90% of the particles in the air... so THAT is a huge problem. 4) CADR rating does not account for VOCs/chemicals, etc. This is a big issue esp. when so many of the units say they have "carbon to absorb harmful chemicals", etc. but they are actually ineffective in doing this... and/or much less effective after a month or so... 5) I think the CFM/Airflow rate - which is a component of the CADR rating IS SUPER important of course. If I have an IQAir HealthPro Plus in my room and I know it performs at 99.5% for Ultrafine particles and I know based on the CFM rating of the unit that I am getting 5 air exchanges in my room - then YES! THAT is very important and useful to know. But IQAir is one of the most upstanding manufacturers in this industry - and the 1st to get EN1822 tested. I trust their numbers and testing results much more than most all other manufacturers. For Example, many air purifier companies lie about the true airflow of their units... and make them seem more powerful than they actually are. Unfortunately, there are a lot of shenanigans going on in the industry... Some/many of the HEPA air purifiers don't even have a True HEPA filter in them - even though, they are marketed in this way. If you saw my Levoit video - you saw that they've been marketing their units as having HEPA filters for many years but they got busted last August for not having HEPA filters in one of their most popular units (the Core 300). So, with a little more checking I found that they actually don't have HEPA filters in 11 of 22 of the units they make. But the box I received from them said "HEPA" on it over 10 times. And the manual used the word "HEPA" over 10 times, as well. And this was a few months after they were told by the BBB to stop using the word "HEPA" with the Core 300. Ridiculous! As SO MANY Core 300 customers will think they have a HEPA filter in their units... how could they not? Again, a lot of sneaky, lying stuff going on - because there are MILLIONS to be made if they can market their units well to the consumers... regardless of how well they actually work. I hope some of this makes sense - thanks!👍

@derHolzstift 6 күн бұрын

@@AirPurificationEducation Thank you for the information, I have a few more points/questions. 1) What are some reliable, valid factors to consider as decision criteria? If the first 20 minutes of performance are good and the overall quality of the air filter is also high, isn't that positive? Perhaps it shouldn't be the only parameter we rely on, or am I missing something? 2) How important is the order of the filter layers? I think this is also a crucial factor, such as a coating of carbon, potassium permanganate, alumina, or zeolite. 3) What's your opinion or experience on the Blueair Classic 505? Would it be suitable for a small two-room apartment? It also has ionization.

@AirPurificationEducation 5 күн бұрын

@@derHolzstift 1) “If the first 20 minutes of performance are good and the overall quality of the air filter is also high, isn't that positive?” Yeah, but I think many/most air purifiers will “test” out well for only 20 minutes with the clean filters. When they get dirtier - that’s when they start to really have contaminated air escape around the seals. But you can only test this after several weeks of real world use. Also, like I mentioned - many of the test results in the industry are rigged so they provide “good” results for the units… so it is not a simple thing these days. I don’t trust most of the companies to provide honest testing data. 2) “How important is the order of the filter layers? I think this is also a crucial factor, such as a coating of carbon, potassium permanganate, alumina, or zeolite.” I would always want the HEPA filter to come last so it can capture any carbon that may escape into the air. On the carbon side I trust Airpura to be the experts in this arena… I think there are many different levels of quality of carbon on the market so 1 companies carbon may not be as good as another companies. The effectiveness of carbon is hard to test for. 3) Blueair Classic 505 I think it is a decent unit. I think I’d probably put it below the Coway 300/400 units. But it is a decent air purifier.

@YTLuc 4 ай бұрын

Three Questions: 1) CADR and Purchasing Decision. What metric or metrics should I look at instead of the CADR rating when choosing an air purifier? 2) Dyson and CADR Criticism. Does the claim by Dyson that their fan's help circulate more air pollutants back to the purifier mean they clean more air over time even though competitor units have higher CFM ratings than a unit such as the HP09? The assertion by Dyson is that typical air purifiers only clean the air space near the unit. 3) Dyson Purifier Big+Quiet Formaldehyde. Do you have any impressions or tests about the Dyson Big+Quiet in comparison to the IQAir HealthPro Plus to see which is a better product? I've narrowed down my list to buy one of the two for my living room around 450 sq ft.

@AirPurificationEducation 4 ай бұрын

1) CADR and Purchasing Decision. What metric or metrics should I look at instead of the CADR rating when choosing an air purifier? **I'd look at the EN1822 certifications and maybe 3rd party lab certifications, in general... but, even these can't 100% be trusted as manufacturers and labs are sometimes "rigging" the tests. **How well the units are sealed inside between the HEPA filter and the interior of the air purifier is a big issue. 2) Dyson and CADR Criticism. Does the claim by Dyson that their fan's help circulate more air pollutants back to the purifier mean they clean more air over time even though competitor units have higher CFM ratings than a unit such as the HP09? The assertion by Dyson is that typical air purifiers only clean the air space near the unit. **Of Note: I never considered any of the Dyson "fan" air purifiers to be "high level/elite" particle filtration units and I have never recommended them to customers. **Which unit is the best for airflow in a particular space... I think we'd need extensive testing in multiple different environments to confirm or deny such things... Plus, when it is all said and done - I think we'll find that different units with certain air flow (coming out the top... or the sides ... or the bottom) will provide better "airflow or air exchanges" in different spaces... depending on a few variables... Like how tall the ceilings are... is the unit more centrally located in the room?... is it going to be put more in a corner in a room? ... is there a bed between the unit and the person in the room... There are a lot of different variables in a "real world" environment that will affect the airflow of a unit, I think. In general, I would say - if the air purifier can literally blow clean air on you - then that is more advantageous. For ex. I used to sit right next to an IQAir HPP and it blew clean air on my arm... now that is probably more of an ideal type of situation. **I think inexpensive, weak air purifiers may be more prone to just "cleaning the air around the unit"... esp. if placed in a room too large for the solution... So, in some instances Dyson is probably more accurate on this than others. This is one of the reasons why I generally tell people to "supersize" their air purification solution for their cubic footage... If we can figure 4-5 air exchanges in our space... then where the clean air is coming from probably becomes less of an issue... vs. a solution that is somewhat "undersized" for a space. And all that being said - in larger spaces - I think Dyson may very possibly be accurate about them blowing the clean air further from the unit than other solutions on the market... Austin Air kinda makes a similar argument so in larger spaces - there may be a lot of truth to this line of thinking. 3) Dyson Purifier Big+Quiet Formaldehyde. Do you have any impressions or tests about the Dyson Big+Quiet in comparison to the IQAir HealthPro Plus to see which is a better product? I've narrowed down my list to buy one of the two for my living room around 450 sq ft. **I don't have direct experience with the Dyson Big+Quiet but I have studied it a bit online... And in my current opinion... for particle filtration - I'd go IQAir all the way... as they are elite for the most dangerous ultrafine particles and the HPP was the first consumer air purifier to be EN1822 certified. I don't think the Dyson Big+Quiet is currently EN1822 certified... and I think the carbon comes last in their filtration process which is not a good thing. IMO, you always want the HEPA filter to come last so it can prevent any carbon particles from entering the air we breathe... I run the HPP in my familyroom. It is a hard air purifier to beat for particulate filtration... - even after all these years. 👍

@YTLuc 4 ай бұрын

@@AirPurificationEducation Thank you!

@YTLuc 4 ай бұрын

@@AirPurificationEducation How can I set up an appointment for an over the phone consult regarding the purchase of air purifiers for my home?

@AirPurificationEducation 4 ай бұрын

We could set up a time - and you could call me or I could call you - whichever you prefer... If you email me - I'll give you my number or you could give me yours: synerstar2@yahoo.com - thanks! @@YTLuc

@hairpunut 11 ай бұрын

Do you consider levoit a decent brand ? They dont seem to throw tests results around like other companies ive seen. I did buy two already due to price point. But ive been trying to learn more about air purifier products.

@AirPurificationEducation 11 ай бұрын

I do not have direct experience with the Levoit products and I do see they have some positive reviews on Amazon. But when I look online at KZfaq videos it appears the influencers who 'review' or 'push' the product were given it for free as an incentive to say good things about it so I am very skeptical. I may eventually get one to check it out but my knee jerk, initial opinion is, I don' think it is too great. Thank you!👍

@hairpunut 11 ай бұрын

@@AirPurificationEducation That's what's I've seen, it seems vaccum wars did the most work with it. But it's hard to gauge anything from them atm. And I don't see any longer term test or anything atm. I just see alot of people like them. Personal it looks nice and seems decently built. But I'm worried about how effective it will be. But the filters are cheap enough to replace more often which is nice. Especially when buying off branded ones from Amazon.

@AirPurificationEducation 11 ай бұрын

Most all air purifiers will improve the quality of your air at least somewhat for larger particles. The problem is, 90% of the particles in the air we breathe are UltraFine and we cannot see them and they cause problems to our health over time - even if we don't notice any particular breathing issues currently. Research is proving this to be more and more true. So I think the entire industry will be different in 20 years as they learn more about the adverse effects of UltraFine Particles on our health. Thank you! @@hairpunut 😃

@kitkit6610 5 ай бұрын

Any comments on products from smart air like the sqair? ❤

@AirPurificationEducation 5 ай бұрын

I have dealt with Smart Air in only a small capacity up to this point in time - but if you watch this video I made on their owner and how he tries to compare a $45 Smart Air DIY unit to different IQAir units (IQAir manufacturers elite air purifiers for particle filtration) - I think you'll see that he does not appear to be the most honest person on the planet, LOL! kzfaq.info/get/bejne/l5OSp5ap1KnShYk.html&ab_channel=AirPurificationEducation I also had some back-and-forth comments with them in the past - and they were trying to say all "HEPA" filters are basically the same and I could not disagree with them more. They were trying to say the results from a test done on the HEPA filters in the ISS - $150 Billion dollar International Space Station also apply to their $27 dollar HEPA filters for their DIY unit. I am shocked that they would even entertain the thought that the 2 HEPA filters could possibly perform the same. I may actually make a video on that interaction as the whole thing is ridiculous in my opinion. Thanks!👍

@der987654 Жыл бұрын

Are the dyson models all hype or actually good ?.. like the tp03 model

@AirPurificationEducation Жыл бұрын

I view them as good-looking, modern-looking fans but I do not currently consider them to be really strong air purification solutions. Thank you! 👍

@der987654 Жыл бұрын

@@AirPurificationEducation thank you !… Any purifier + fan combos you could suggest … it gets really hot where I live

@AirPurificationEducation Жыл бұрын

@@der987654 I think if you want a fan - you get a fan and if you want a decent air purifier - then you get a decent air purifier as I don't know one that is good at both... that said... if you want a unit that will blow air kinda sideways that you can direct the air to hit you - you could look at an Austin Air Healthmate - I have 2 of them. They are Good air purifiers and they have a unique airflow arrangement. Air comes shooting out one side at like a 50-degree angle so it really is like a fan in that regard... you could possibly point it towards you if you are close in proximity to it... If I sit 2 feet from it in a chair - I get hit in the face with the air... but I'd never really want to do that, lol! All that said, I think folks can get decent fans very inexpensively, as well. Thanks!

@der987654 Жыл бұрын

@@AirPurificationEducation thank you so much for such a detailed response !… I’ll definitely look it up

@wakingcharade Жыл бұрын

what should we be using instead?

@AirPurificationEducation Жыл бұрын

Very good question. Unfortunately, the answer is not a simple one. Testing air purifiers correctly is very difficult and expensive. I'll be making a video soon on 4 different air quality testers and I think folks will see they are probably not to really be totally trusted either... Also, it depends on what you want your solution to do for you... You can tell me about your environment and I can make some recommendations if you wish: airpurificationeducation.com/free-air-purification-consultation-form/ Thank you!

@hardboard82 11 ай бұрын

@@AirPurificationEducationthat link doesn’t work anymore. I live in Indianapolis and just bought a 2 story home plus basement (about 1000sqft per floor). The main level has a kitchen , living room with wood burning fireplace, dining room, and a family room. I’m trying to determine what kind of purifier I should be looking for based on these variables. Also the previous owners had a dog and the house kind of smells musty, but no mold has been identified by the inspectors. Could you please offer some suggestions? Let’s suppose price is irrelevant.

@AirPurificationEducation 11 ай бұрын

Hello and thank you for your inquiry. If you smell mustiness from the basement -then I would get a digital hygrometer and test the relative humidity in the basement - it is probably over 60%. You tend to smell mustiness over 60% but if you get your RH below 60% then the smell should go away + ya definitely don't want to get mold. So please get a digital hygrometer ($25 and less is good) off of Amazon, etc. and test your RH and Temperature down there, for about 3-4 days - this is good timing as we are in summer which is perfect for this. You probably need a dehumidifier for the basement and I can probably tell you what size unit to get if you give me that info. + the square footage of the basement (1,000 sq. ft. x 8 ft. ceiling?) + are you near any water source like a lake? or are you at the bottom of a hill and water collects in your yard? or do you have any leakage into the basement? Do you also have a crawlspace? Please give me those answers and I think I can tell you what dehumidifier you need - if one at all. @@hardboard82

@hardboard82 11 ай бұрын

@@AirPurificationEducation Thanks for your response - we actually got a dehumidifier for the basement last week so I think we’re good down there! There isn’t much of a smell in the basement, but it’s mostly on the main level and most noticeable upon entry. We don’t live near a lake and it doesn’t seem that there are any moisture issues present. I think the previous owners just weren’t the cleanest and they had a dog. I’m curious how much of the smell is sourced from the chimney. Would an air purifier typically be recommended near wood burning fireplaces in general?

@AirPurificationEducation 11 ай бұрын

Fireplaces are not really good for your breathing - depending on how much you use them. I would go with either an IQAir HealthPro Plus or an IQAir GC unit. I would go with the HealthPro Plus if you only use the fireplace occasionally (maybe a few hours 1 time a week during winter months). I would go with the GC unit if you are going to use the fireplace more than 1 time a week during the winter. The HPP is a little better at filtering particles and costs about $469 less than the GC. The GC has over 2 times more carbon for odors. But you can get more carbon for the HPP for $99 so it is pretty reasonable, IMO - in that regard. If you are not going to use the fireplace but smell general odors you wish to get rid of then I would go with the GC unit and the additional carbon. You typically want to run the units on medium to enable the carbon to absorb the odors better (as the air runs through the units slower). Thanks👍

@CaitlynKeenan-nk4cr 3 ай бұрын

What are your thoughts on Shark air purifiers? They make no claims on their packaging, but we know we do live in a world of false claims so maybe it doesn't matter all that much.

@AirPurificationEducation 3 ай бұрын

I don't know much about the Shark air purifiers but I currently view them as "Also Rans" in the industry. I see their "NeverChange" Air purifier which I think is probably kinda silly unless they somehow invented some new technology. www.sharkclean.com/products/shark-neverchange-air-purifier-max-zidHP302 *"designed for 10x longer filter life save, $300 or more in filter replacement costs over 5 years." - trying to sell it by saying the consumer will save a lot of money by not replacing filters. *"Covers up to 1400 sq. ft." - which is a huge space for an air purifier to cover well. *"A HEPA filter captures 99.98% of particles" - so they just HAD to say it filters better than 99.97% at .3 microns which is HEPA- they just HAD to add that extra .01 to the percentage, LOL! *All from a unit that only costs $270.... Hmmm... I highly doubt it filters at a HEPA level and don't know how they think it's gonna filter at a HEPA level in year 4 with all the dust and debris in the filter... Anything IS possible but this is just "Marketing Mumbo Jumbo" IMO unless they have some serious 3rd party testing to back their claims up... Thanks!

@collegefootballaddict1715 Жыл бұрын

Wow - seems you can't trust all the gov. stats

@AirPurificationEducation Жыл бұрын

no, unfortunately, you really can't - thanks!

@internetmarketingzerotoher6744 Жыл бұрын

good 2 know

@AirPurificationEducation Жыл бұрын

Thanks!

@gandalfgreyhame3425 7 күн бұрын

As a HEPA Air Filter dealer you obviously have your own biases about this topic. You spend a lot of time in this video belittling the CADR when in fact, it's an important measure of how well an air filter can MOVE air through the filtration system, since the biggest problem with HEPA filters is that a lot of them don't move a lot of air unless their fans are turned up to maximum speed and volume And you totally ignore the movement towards DIY and less expensive kit systems designed around simple high MERV rating HVAC filters, the Corsi-Rosenthal air filter systems: kzfaq.info/get/bejne/nceBh7yjztnNlXU.html kzfaq.info/get/bejne/gd6AnpuqtK6Rqmg.html kzfaq.info/get/bejne/m79_qdGi1L2YeGQ.html The biggest problem of course is the these HEPA filters are all generally proprietary form factors and not generic size and so tend to be 3-4x the price of simple high MERV HVAC filters.

@AirPurificationEducation 5 күн бұрын

1) You said, “As a HEPA Air Filter dealer you obviously have your own biases about this topic.” A: No, I am not an Air Filter Dealer. I am an Independent Air Quality Consultant with over 16 years of experience with over 100 solutions. 2) You said, “You spend a lot of time in this video belittling the CADR when in fact, it's an important measure of how well an air filter can MOVE air through the filtration system, since the biggest problem with HEPA filters is that a lot of them don't move a lot of air unless their fans are turned up to maximum speed and volume” A: CFM and airflow IS an important component of an air purification solution. However, typically, it is not more important than the quality of air coming out of the unit. 2B) You said, “the biggest problem with HEPA filters is that a lot of them don't move a lot of air unless their fans are turned up to maximum speed and volume” A: I currently disagree with this statement. I think one of the biggest problems with HEPA air purifiers are the poor seals inside the units between the filters and the unit's interior. Not so much that they don’t move a decent amount of air on lower speeds. But it depends on the specific unit we’re talking about. 3) You said, “And you totally ignore the movement towards DIY and less expensive kit systems designed around simple high MERV rating HVAC filters, the Corsi-Rosenthal air filter systems” 3A) This video was created to explain some of the more egregious testing mistakes involved with obtaining the CADR Ratings. They cannot be used to definitely tell if one air purification solution is superior to another for many, many reasons… and some of these reasons were explained in the video. This was a video about the problems associated with CADR Ratings specifically - not about MERV 13 solutions or DIY CR Boxes. I didn’t mention “MERV 13 filters” or “DIY CR Boxes” in the title of the video or description… so I don’t think viewers would expect to see that type of content in the video. Also, the 3 video links you supplied were ALL uploaded within the past few months - 10 months is the oldest one. The CADR Ratings video I made is 20 MONTHS OLD! The CADR video I made was uploaded way before those 3 videos were uploaded which you mentioned to be part of a “DIY movement”. So, of course, one would not expect to see MERV 13/CR Box content in this particular video. 3B) No, I don’t totally ignore DIY CR Boxes or MERV 13 filter solutions. I included them in a different video called “Best Air Purifier 2024 Updated! Allergies, Dust, Pets” kzfaq.info/get/bejne/d7d2kpiltZ3NlZc.html&ab_channel=AirPurificationEducation You will see I placed the DIY CR Box at #17 for 300 sq. ft. rooms and at #11 for rooms around 1,000 sq. ft. I even included them in a blog post for the list: airpurificationeducation.com/asthma-allergies-and-dust-particulates-in-general/ 4) You said, “The biggest problem of course is the these HEPA filters are all generally proprietary form factors and not generic size and so tend to be 3-4x the price of simple high MERV HVAC filters.” A: I initially thought the CR Boxes would be very inexpensive, as well. However, after crunching some numbers I was very surprised to find the Cost of Ownership for the CR Boxes are not nearly as “inexpensive” as I I originally thought. As they came up as the 9th most expensive option out of 17 solutions on my list - for Cost of Ownership: airpurificationeducation.com/cost-of-ownership-rankings/ 5) In Summary: The CR Boxes do not filter particles as well as good HEPA solutions. They also don’t have carbon so they will not filter as well as, high quality air purifiers for chemicals/odors/VOCs. And if one chooses a 3M filter which I think is a better quality MERV 13 filter than most others… Then, the cost of ownership is not nearly as low as most folks would think, including myself. I do think CR Boxes will definitely improve the quality of air in a space by taking out larger particles. I think they are probably great solutions (for the price) for some woodworking environments and applications like that. So, I do think they have a place in the air purification world for some folks.

@gandalfgreyhame3425 5 күн бұрын

@@AirPurificationEducation I don't think you bothered to watch any of the videos I listed - yeah, obviously a MERV13 filter is not designed to filter more than 75% of the .3-1micron material, but again, these large air flow C-R boxes have such a higher rate of flow compared to most HEPA filters that the total air re-circulation and removal of the smallest contaminants after multiple passes of the air inside a room is often substantially better than most HEPA filters. That first video talks about a study that showed just such a result. I do own several Honeywell HEPA filters and they do work - but I rarely run them at maximum airflows because they are just too loud, and this is true in general of most HEPA air filters - their maximal CADR airflow rates are almost always at fairly loud fan levels. And, until third party manufacturers entered the market, replacing these Honeywell filters was SUPER EXPENSIVE. Carbon pre filters are another bugaboo. Again, I use them on the Honeywell HEPA filters I own because that's how they come. But they have limited effectiveness. They quickly saturate with the VOCs and become useless after just a day or so. If you're really serious about carbon filtration, then you are talking about passing the air through a canister full of activated charcoal with several pounds of this stuff and changing out these pounds of activated charcoal out regularly. One of the 3D Handyman's designs on Etsy actually includes such a canister made by AC Infinity. In general, it's not clear to me that charcoal filtration makes much of a difference compared to getting the fine particulate matter out, and the trouble and expense of actually getting carbon filtration to work on room air to the same level of effectiveness as a chemical filtration gas mask is just too much. Finally, your evaluation of the HEPA filters with the Corsi-Rosenthal box listed as 9th picked the most basic and crude of the DIY designs, made with your basic Genesis box fan - this design, while cheap initially is far less effective and airflow/energy efficient than the best of the DIY and home kit designs out there, such as by the 3D Handyman and the Clean Air Kits company, as well as the one shown by the Healthy Home Guide channel. Key to improving the efficiency and Airflow to NOISE levels of these designs has been a move towards energy efficient BRUSHLESS motors. The AC Infinity Cloudlift fans used by Healthy Home Guide and 3D Handyman are brushless Electronically Comminuted fans, and Clean Air Kits uses these highly efficient computer case fans, which are also brushless. These are much more energy and airflow efficient than the basic Genesis box fan you compared the HEPA filters to. The other problem with these el cheapo box fans is that they are not airtight and leak air around the corners and edges of the box frame (also pointed out in one of the videos I listed). Another quirk of your evaluation of the CR box - it seems that you chose a 20x20x1 Filtrete 1900 filter as your standard for cost and air filtration evaluation. It turns out that the pricing for a 20x30x1 Filtrete 1900 filter is fairly similar, depending on what deals Amazon or Lowes are running at the moment. And as such, it is far more cost efficient to build these CR boxes with 20x30x1 filters. You can't beat 50% more filtration surface for about the same price. So yeah, your most recent evaluation comparing the HEPA filters with the basic Corsi Rosenthal design ignores the best and latest innovations out there in the DIY kits using 20x30x1 HVAC filters and energy and airflow efficient brushless fans. Time to do another evaluation. Check out those DIY kits listed above and in those KZfaq videos.

@AirPurificationEducation 5 күн бұрын

@@gandalfgreyhame3425 1) “I don't think you bothered to watch any of the videos I listed “ A: You appear to be very presumptuous. I looked at the 1st video a few months ago and actually broke the entire video down and made notes of where it was incorrect. I’ve already seen some of the 3D Handyman’s videos on MERV 13 filters and that is one of the reasons why I think MERV 13 solutions may be superior to a lot of HEPA solutions out there for woodworking shops. I commented on one of their videos but I don’t think they ever answered my question. I think, I would actually like to become an affiliate for their solutions in the future. The more solutions I work with and understand in the “air purification pecking order” the better I am able to consult with my clients. I don’t care if it’s a MERV 13 filter - a HEPA filter - a ventilation fan - or a large cylinder full of high quality carbon. I ALWAYS provide my customers with the BEST options I feel will be of benefit to them - regardless of cost or my gain. I have sold (influenced people to buy) many IQAir HPP and Aeris 3 in 1 units the past several months and have made barely any money on them at all. But I put them #1 and #2 in my dust/particulate listings for my 2 “Best Air Purifier” videos. In fact, I’ve had several people tell me they purchased the Aeris product because of me and I’ve never made 1 PENNY on that solution as an independent consultant - to date. And I may have made only about $50 on the IQAir solution, as well, over the past 2 years… - but I’ve sold MANY of those units as I’ve had many people tell me they purchased it because of my videos. Shoot, the Aeris 3 in 1 isn’t even available in the US and hasn’t been available for many months but I STILL put it #1 on my list - why? Because it is the best. If I wanted to just “Try to make money with my content” I would push the AirDoctor product line as they offer 15% commission on their sales and that is why we see so many influencers saying how good their product is. They are even 3rd party tested at 99.99% down to .003 microns so it would be easy for me to push their solutions and make short term money. But I don’t because they are not as good as they say they are and their “testing results” are suspect. You assume too much about what I know and what I don’t know and what I’ve seen and haven’t seen. 2) “That first video talks about a study that showed just such a result.” A: You and some other “MERV 13 Evangelists/Enthusiasts” take a few test results and apply them to all the MERV 13 filters and solutions out there which is wrong. Many/Most “HEPA Enthusiasts” do the exact same thing and don’t consider all the variables involved in each solution which may make them not all perform at the exact same levels. I make it very clear in many of my videos that Air Purifier - and/or HEPA filter “test results” cannot be extrapolated across the entire industry for all solutions. And, I also go so far as to say that there are many “fake” 3rd party testing results in the industry, as well. Many manufacturers will do and say whatever they have to - to get folks to buy their products. The industry is filled with lies and fake data/test results that will never be achieved in the real world. This is true for the HEPA solutions and it is ALSO true for the MERV 13 solutions, as well. 3) Carbon: The carbon topic is a large one and too large for me to break down in one sitting. In short: I have over 16 years of real world experience with multiple different carbon solutions and thousands of customers in multiple different applications and therefore, I probably know more about their effectiveness than most. All that said, it is not a simple topic. 4) “ (you) picked the most basic and crude of the DIY designs” A: Uh, I picked the MOST POPULAR DIY CR Box design that most folks are exposed to and most folks would gravitate towards in the market. Therefore, my CR Box content would be most relevant to the largest number of viewers. 5) “Clean Air Kits uses these highly efficient computer case fans, which are also brushless.” A: You are now talking about a specific brand that makes MERV 13 solutions - not generic DIY CR Boxes. So you have changed the focus of the topic here. I only talked about the generic MERV 13 DIY CR Boxes which are the most popular DIY that I am aware of. And most folks will recognize. You are now talking about a completely different solution - manufactured by a company, that is not DIY. It just happens to use a MERV 13 filter like a CR Box. These are 2 completely separate solutions.