Who makes the best indoor air quality meter

I don't think any single indoor air quality monitor currently measures all particles or VOCs accurately. I do like the Dylos 1100 Pro for particle concentrations that are around 2.5 and .5 microns. but you may want to look at this post regarding some of the limitations of sensors, in general: airpurificationeducation.com/dylos-dc1100-pro-vs-temtop/ Thanks!👍 @@loganedwards2566

@AirPurificationEducation thank u for the response there's so much trash out there I want to get a meter that actually works my son just had our first grand baby and I want to make sure the air is healthy for her to breathe

I generally tell folks to basically invest their money in a good air purification solution as opposed to an air quality meter as none of them are perfect and I have 5 different ones but some of them tend to tell me my air quality is "Good" - when in reality - sometimes, it is pretty poor... and I don't want people to trust the readings too much and get a false sense of security - if that makes sense. @@loganedwards2566

@airPurificationEducation, I would like to have an air quality monitor to set the baseline in my home, before I add air purifiers. Is there a budget model that is consistent enough to set baseline and then measure the improvements?

Yeah, I've been known to put many people to sleep with my videos - maybe I'll eventually start a "Sleeping YT channel", lol! Thanks for the thumbnail comment - I'm trying to get them better. Thanks 4 the comment!👍

😂😂😂

if you had a vid playing with alot of oos and awhhhhhhssss, she would have perked wright up giving you that deep stare

@@AirPurificationEducation A(ir)SMR

Happy you enjoyed it - thank you!👍

I've been right here waiting for you... for such a long time... Welcome home! LOL!😆

Thanks!👍

Thank you for the recommendation - appreciate it. 👍

Thank you for your kind words - I appreciate it. 🙂

Thank you for your comment... 👍 1) I currently have 5 different air quality sensors and I don't currently 100% trust any of them or recommend any of them... I think the manufacturers have figured out that Apps. with Nice looking graphs and monitors with "nice looking display screens" really sell these units to the masses - regardless of how accurate they actually are - unfortunately. They might be somewhat accurate some of the time... but.. IDK... I wouldn't bet MY health on it, LOL! 2) I do think the Dylos DC1100 is possibly the most accurate of the 5 I currently have for particles around PM2.5 but IDK how much that helps folks as the Ultrafine particles are the most harmful to us and they are .1 to .003 microns in size (much smaller)... VERY tough to test for accurately and no handheld can currently do this so... it is tricky. And I don't want people to look at their monitor and have it say "Good Air Quality" and give them a false sense of security which I do think is currently occurring much of the time these days. 3) Testing for VOCs with the units - is probably even more difficult/inaccurate from what I've learned from studying different sources... 4) I'm going to play with my sensors more over the months to see if I can somehow rank them for performance but... I am not super optimistic on this. 5) I'm currently focusing more on air purifiers Thanks for stopping by and enjoy the Holidays! 😀

@@AirPurificationEducation Hello. Would you think that ultrafine particles are proportional to fine particles count? That's a trend we see on this video with the Dylos dc1100 with larger particles.

Excellent Question and this is something I have been thinking about for quite some time. It would seem like if there are less larger particles (and concentrations) in the air... then there would simultaneously also be less smaller particles (and concentrations) in the air, as well, right? That seems like it would make sense to a certain degree. My knee-jerk reaction is that this may be true... but, then I wonder... if true, in general - would it always be true ? Are there conditions when it is less true (or not true)? Like higher/lower temperatures and different relative humidity levels? And/or different types of UF particles perhaps "behaving" differently? So, I currently don't know but it is definitely something I think about often. Yes, the DC1100 Pro kinda shows a correlation between the concentration of larger particles in the air... and the .5 concentrations, as well... But, the ultrafine particles are .1 to .003 microns in size so would this correlation continue on to their size as well? And then, a really big question - are there specific size ranges of UF Particles that are more hazardous to humans than others? And then - I guess it would depend on what those UF particles are composed of - or carry w/ them... And then - perhaps some affect women differently than men... and we could possibly even get into age groups, as well... I think we could go on for a while with this, LOL!😆 I am excited to review the results from more research as it becomes available... as I think we'll all be somewhat fascinated with the findings over the coming years. So, yeah! LOTS to think about and consider... for sure! Thanks!👍 @@goku445

@@AirPurificationEducation Yes a lot of things to consider and to research. Thanks for the insights. I'm currently debating whether I should invest in an air purifier. I live in a big city. So I do my research, quite interesting I must say. I've found that some materials can passively adsorb ozone from the air like perlite or activated carbon.

Thank you for your feedback! 1) Unfortunately, I don't know of really good AQ testers. 2) A good dehumidifier (for 420 sq. ft.) for your space would be a Danby 40 pint unit. Like the Danby DDR040BJWDB-ME which is about $210 on Amazon. Of note: the dehumidifiers will "Heat" your space when the compressor turns on. 3) If you want the best air quality - you could go with an IQAir HealthPro Plus which is about $899. If you want something less expensive that will not really help with the most dangerous Ultrafine Particles - you could go with a Coway 300 which is about $438 on Amazon. Or if you just want to really budget down - you could go with a Coway Airmega AP-1512HH Mighty which is about $169 on Amazon. I hope this helps - Good Luck!👍

Thank you for your comment. Unfortunately, I don't have any experience with the Aranet4. I had someone a few weeks ago say it was good in my comments - but I really don't know. I think I will eventually get more into the testing/monitoring equipment in the future... we'll see. Thank you!

Thank you for your comment. Unfortunately, I currently do not have a strong recommendation for an air quality tester at this point in time. I think the Dylos DC1100 Pro is decent for telling people particle concentrations of PM2.5 and maybe even .5 microns in their space... It won't tell us everything about our air quality... For ex. it won't tell us if we have dangerous mold - nor will it help with CO2 levels or any of the 15,000 + chemicals that may be in our air... nor will it really read ultrafine particles... but for less than $300 - if someone wants something that may be fairly accurate on PM2.5 - and maybe .5 particle concentrations... it may not be the worst option out there... How's that for a stellar vote of confidence, LOL! 😆 I am somewhat optimistic that more comprehensive air quality testers/monitors will become available w/in the next 5 -10 years at a reasonable price... we'll see! Fingers crossed!🤞 Thanks!

@@AirPurificationEducation, thank you very much for your well consider answer, it is much appreciated. Looks like it will be the Dylos DC1100 Pro for me for now, thanks again 👍

@@Anthony_Matabaro_3D_360 Industrial ones are way more accurate but they often cost at least five grand so......

Interesting, yeah, I don't think I currently trust any of them, LOL! I think people completely underestimate how difficult it is to "measure" small particles in the air accurately and same goes for VOCs - very difficult to measure accurately, IMO. I've watched the "evolution" of the screens of these sensors through the years and now they make the screens look as nice as they can and people are attracted to the devices like moths to light - Just because the screens look nicer, LOL! But how accurate are they??? IDK, but I don't think the consumers really know if they are getting accurate readings or not... kinda crazy. Thanks!😃

Thank you for your kind words. I will be learning more about VOCs over time - there are so many different ones that I don't think any sensor/monitor can possibly test for all of them. I've also seen and heard multiple times that it is even harder to accurately test for VOCs than particles. I was in a hotel 2 months ago and the VOCs/chemicals in the lobby were overwhelming but both of the sensors I had on me (Temtop and Atmo) said the air quality and VOCs were "Good". I also took a mold sample as I suspected they are trying to mask/hide musty smells from mold. The lab said there were 4 different types of mold present. I will contact the mold lab to see what they think of the test and maybe even make a video on it. Either way, I am pretty sure the air quality in that lobby is most definitely NOT "GOOD", lol! Thank you!👍

Yeah, I think it is possible that different sources can get different results for different reasons. I think the sensors may be sensitive to temp., RH and even airflow to varying degrees. Some people say some electronic components in some air purifiers can also make the air quality sensors less accurate... What about other electrical devices? It could be a lot of things - and I'm not an expert. More than anything: I don't want people to use an air quality sensor and see it say "GOOD Air Quality" and automatically think they are "Safe". I had a Temtop in a Hotel lobby a few weeks ago and the VOCs were HORRIBLE. Just terrible. You could actually smell the VOCs from outside the building as you approached the hotel. The Temtop said everything was "Good" in the lobby and in our room (it most always says my air quality is GOOD no matter where I go). But, I am almost positive the VOCs in the lobby are not "good" for people. I think the hotel management is possibly trying to hide a musty smell from a mold problem they have... and I am guessing they are trying to overpower it with whatever chemical they are using... You can smell this chemical in the elevators and the stairwell, as well - to a lesser degree. The bottom of the Hotel is built into the side of a hill so they basically have a semi-basement (which is more conducive to mold problems, IMO). So I did a mold test and we'll see what comes of it. But, I think it is super dangerous for the masses to trust a device (all of them, actually) which: A) cannot test for the most plentiful and most dangerous ultrafine particles which are .1 to .003 microns (so how useful are the PM2.5 or even .5 readings even if they were accurate?) B) cannot tell you if you have mold or whatever other dangerous particulates may be in your air C) can't give readings on over 15,000 and more VOCs that may be in our air, etc. I fear that the vast majority of people will just see a "Good" reading and feel like they are automatically "safe". I also fear a company could show a "Good" reading to it's employees and everyone working in the building would feel like they automatically have healthy air quality with nothing to be afraid of... That is not the case. And most people will never think to challenge a "good" reading because they won't know of all the variables potentially involved. I am worried that the staff that works at that hotel on a daily basis are being exposed to mold and also some terrible VOC, as well. So, there is a lot to this. I think more than anything, I want people to question the readings they get and realize a "Good" reading doesn't cover some/most of the most dangerous stuff that could be in their air.

Thank you for your question. I agree 100%. I currently have very little content on VOCs/Chemicals. I plan on learning a lot more about VOCs/chemicals (and different types of carbon) and some of the sensors out there, in the coming months. My current understanding is that it is supposed to be even harder for sensors to accurately test for VOCs than particulates... so... unfortunately, I'm not currently super optimistic that there are great options out there at reasonable prices.... That said... I also plan on chatting with some experts, in certain niches in the industry to get their opinions on what may be some decent options. All this stuff is a work in progress. It takes time... Thank you!👍

That was my understanding as well that VOCs are much harder to measure accurately. If you could chat with some experts in this regard, that would be awesome! Thanks for the great content.

I will try my best - Thank you!👍 @@user-xx6kx6pk9s

1) "Is it better to just get a PM monitor rather than a monitor that supports other features (VOC, Formaldehyde, etc)" - I currently think, yes. I think the Dylos DC1100 Pro is pretty good for .5 micron sized particles. If the monitor tests for all sorts of different things - I tend to believe it isn't accurate for some of them - esp. at "reasonable" price points. And it is supposed to be harder for testers to be accurate for VOCs/chemicals, in general. 2) "I am looking for a Air Quality monitor that can monitor some of the Ultra Fine Particles. Is there a monitor that you recommend?" Unfortunately, not currently. I think it is very difficult for monitors to be accurate for UF particles. 3) "What are your thoughts on AQI advisories through sites like IQAir & Purple Air?" I made a video on some of the variables with AQI advisory issues. The closest testing device for particles is about 10 miles from my home... how accurate can it be for my "local" particle issues - like a neighbor burning leaves 100 ft. from my home? I'm guessing not too helpful in that scenario... ditto insecticide being sprayed on all the lawns around me... That said, I do think they provide very valuable "general" information that is being researched and analyzed to make connections between air pollution and our health. So, I think they are super important on one hand for research issues but not totally reliable for air quality issues when I open my front door or windows. Purple Air: I saw some negative feedback on them last I checked - so I don't really know how good the Purple Air products are... 4) "Have you reviewed any of IQAir's products like the HealthPro Plus?" Yes, for sure - I think some of your later comments show you saw some of the reviews so I won't post links - thanks!

@@AirPurificationEducation Thank you again for your help I understand that these particle counters are not going to be no where near like the industrial models and those instruments are going to be thousands of dollars more, but for a general use to measure the indoor air quality do you still recommend the Dylos? Have you used REED R9930 or the Fluke 985 particle counter? I always liked Fluke instruments, but they too are very expensive. REED is around $1300 which is within reason whereas the Fluke Particle Counter will cost around $6,500. Overall it would be nice to have an air quality monitoring tool to gauge if you walk into a building, room, office or whatever

@@0xRick00 "for a general use to measure the indoor air quality do you still recommend the Dylos?" Yes, I think the Dylos DC1100 Pro is pretty good for .5 micron sized particles. "Have you used REED R9930 or the Fluke 985 particle counter?" No, I have not. Eventually, I expect a "breakthrough" for air quality monitors to eventually become more accurate and hopefully, less expensive. We'll see.

I do think the Dylos DC1100 Pro is a decent solution for PM2.5 readings and it may be somewhat accurate for .5 microns, as well. But, it won't tell us everything in our air as I mention in this short article: airpurificationeducation.com/dylos-dc1100-pro-vs-temtop/ I currently have 5 different air quality monitors but I'm not sure they are super accurate and if I had to guess - I'd say the Dylos is probably the most accurate of the bunch when it comes to particle concentrations. I don't have extensive experience with a bunch of air quality testers in the industry - I currently believe most are probably not super accurate, unfortunately. I'd probably rely on the Dylos instead of trying to purchase a $1,000 solution (and up) as I think many of them will be affected by the same variables mentioned in the short article. That is how I currently feel but I'd love to find a "great" solution in the future that was reasonably priced - I think it will eventually come - hopefully soon - thanks!👍

@@AirPurificationEducation Thanks I appreciate the advice and quick reply!

My Pleasure😃@@user-xd4hb6iw5i

Thanks for the comment. I don't currently really have great recommendations for sensors/monitors as I am not confident in their overall accuracy. I currently generally tell people to invest in a good air purifier as opposed to spending money on sensors to try to determine what level their air quality is. Thanks!

Thank you for the heads-up 👍

I may end up buying more than one, with one of them being the type that doesn't have a case, but is sandwiched by a pair of plexiglass panels, currently sold as "Hotkrem" for around $46. It claims to measure down to PM1.0, and I see several people evaluating it, so it has been adopted to some degree.

Cool - Agreed! Thanks 4 letting me know! Happy Holidays!👍

Hello and thank you for your inquiry. This environment sounds like it could be very unhealthy. I would bring in a water restoration/mold expert company to check things out... they can check for water damage in walls/under floors... w/ certain devices, etc. I wouldn't trust myself to "figure out" what's going on in the environment. I think you need to bring in experts based on what you described. I tend to trust companies like ServPro but different locations may be better than others. I would check all the reviews, etc. for local options. I know a guy who worked in a space similar to what you described and he got super sick over time - chemically sensitive and eventually even housebound. Plus, many of his coworkers became ill over time, as well. So yeah, I would only feel comfortable with experts at this point in time. Good Luck!👍

Thank you for your questions. I have the IQAir Air Visual Pro monitor, as well, but I've barely used it as I've been primarily focusing on the 2 units in the video. I will eventually make a video on the IQAir monitor, as well. I see it is made in China and I'm not sure how great it really is. I know IQAir had a particle counter in the past that was around $2K - $3,000 but I don't think they sell it anymore and I'm not sure why they stopped. I think the entire "air quality monitor" industry kinda shifted the past few years when they started to make units with nice interfaces. The units started to become "better looking" and the interfaces became "more modern" and "visually pleasing" and the pricing has come down a lot. All that said, I suspect the accuracy of the "new, inexpensive, generation of sensors" on the market is not too great, unfortunately. It is NOT easy for devices to accurately test the air quality and measure concentrations of small particles nor easy for them to accurately measure for VOC concentrations, IMO. So, I personally don't reference any of the 4 monitors I currently own. Esp. now that the "Ultrafine" particles appear to be one of the most important variables and none of them can really help too much with that, it seems. I do not feel comfortable telling you what you should or shouldn't do on this issue. I feel more comfortable just explaining how I currently feel about things. I hope that makes sense. Thank you for your comment! 👍

I just went to the EPA site and was watching one of their videos and they literally had a picture of the IQAir sensor with some other sensors and they classify them as "Air Sensors" $100 to $2,500 and they said the following: 1) "tend to be impacted by temperature and humidity, especially high humidity. They can over or under report PM concentrations and they have a wide variation in precision. 2) This means agreement between sensors of the same make and model could be very good or very poor. Also, PM sensors do not detect very small particles. Anything less than 0.5 microns. Or reliably measure larger particles with sizes over 2.5 microns. Lastly, while many sensors have identical internal components, the packaging and placement of the components can result in different data quality." 3) and this, "They may provide less accurate measurements than regulatory monitors and may not operate well in extreme environments like high temperatures, humidity or pollution. Also, many people operate sensors with limited, if any, quality assurance. Currently, some sensors lose their ability to take accurate measurements over time. Finally, sensors may provide data outputs every minute or second. Note: with more frequent sampling, there can be greater uncertainty in the measurement itself and how to interpret any potential effect on your health." ***So, it doesn't sound like the EPA feels "Air Sensors" $100 - $2,500 are super accurate - for what it is worth.

@@AirPurificationEducation thank you very much for the answer!

Thank you and have a Great Day!😀@@talflex25

Very interesting - I will keep that in mind. Thank you very much for your info.! 👍

All points worth considering. Things often go against our intuition. It would certainly be nice to find that there is a predictable relationship between particle sizes, so that we could make inferences based on readings of coarser particles. In woodworking (my personal focus at the moment), I suspect that proportions of different particle sizes could vary quite a bit between tools, as they all create dust differently.

Nevermind, i see there is no less expensive meter but sure sounds like the dylos might be it for now

I currently think the Dylos DC1100 Pro is a fairly accurate air quality monitor for particle concentrations around 2.5 and .5 microns, in size. But, you may wish to read about some of the limitations of air quality monitors, in general, here: airpurificationeducation.com/dylos-dc1100-pro-vs-temtop/ - just so, you understand what you are getting. I currently do not have a recommendation for a monitor for VOCs/odors/chemicals as those are supposed to be even more difficult for sensors to accurately read. "It makes me even wonder how accurate it would be to get an air purifier that has an air quality monitor integrated." BINGO!!! I currently tell folks to NOT take the Smart features of air purifiers into consideration when looking to purchase a solution as the sensors on air purifiers are probably not very accurate. My Aeris 3 in 1 has a sensor on it that supposedly reads the air quality multiple times every second and the founders have master degrees in engineering from MIT and ETH Zurich - 2 of the best engineering schools in the world... and the sensor on my Aeris 3 in 1 will give me fluctuating readings like this: 1... 2.... 1.... 3... 2... 1... 2... 3... sooooo... how does this help me? LOL! right? I know the 3 in 1 is elite for filtering particles and that's good enough for me... I'm not gonna keep checking the readings from the sensor all day long... when we don't even know how accurate it is... But maybe that's just me, lol! Thanks!👍

@@AirPurificationEducation In the end it seems one has to get a stand alone AQ meter and that seems another challenge just to find one that is affordable -and- reliable for home. I seem TemTop in alot of YT videos either reviews for meters or purifiers and now wonder how accurate those reviews are. In this video I wonder if the TemTop happens to be a lemon, but doesn't sound like the company offered a unit for comparing them.

Unfortunately, I don't think an Air Quality meter that "does it all accurately" currently exists. Like I mentioned in the article - the meters are affected by a variety of factors. The only people who can accurately test air purifiers are 3rd party labs with expensive, accurate, equipment and experts at the helm. Everything else is just "Amateur Hour" IMO. The Temtop unit in this video agreed fairly well with another inexpensive meter I have from Atmo. Both said the air quality in the lobby of a hotel I was staying at was "Good" - the problem is, the air quality was actually terrible. The VOCs were overwhelming. No sensor can accurately account for the 15,000 or so different chemicals that can be in our air. So, they just say "Good". Can the Temtop reasonably tell us the PM2.5 concentrations in a space? It depends on some factors, I think. I generally tell folks to skip the air quality sensors and just invest in good air purifiers. That makes more sense to me. @@felix4525

I don't really know how accurate the IQAir monitor is... I have one and I'd probably have to play with it more. I don't currently have any recommendations for monitors as I'm not confident in their accuracy. I plan on learning more over the next few months... I do think the Dylos DC1100 Pro is possibly decently accurate for PM2.5 readings - if that is of value to someone.

Thank you for your question. I am currently not familiar with CEM but you may wish to read my quick post on the air quality units, in general. I think it may help people understand some things about the units a little better: airpurificationeducation.com/dylos-dc1100-pro-vs-temtop/ Thanks!👍

@@AirPurificationEducation You're the best. My curiosity is less so the smallest particles, but rather larger, like whether mold is detectable by pm10

I think you will want to do some mold testing if mold is the #1 priority in your space. Good Luck!@@mrwilliamwchang

Very good Question. Mind you - I am not an expert on any of this stuff but here is my current position based on what I've seen and learned (I'm a student). This should not be taken as me giving you advice on what you should do in your environment- this is just how I currently think about air quality purchases for my personal environment. 1) I currently, personally do not trust the air quality sensors. I think it is very difficult to consistently accurately test smaller particulates on a regular basis. And I currently think it is also difficult to test for VOCs/chemicals/odors accurately on a regular basis, as well. Plus, there are potentially over 10,000 (some say over 15K) chemicals in the air and I don't know of any monitor that will do a good job of testing for all of them. Yes, some chemicals are worse than others for us but... that is probably a never ending conversation/topic and we'd probably need 10,000 more studies to be completed over the next 20 years to become "next level enlightened" on this topic - I'm guessing. So, I don't think good enough technology currently exists for the average consumer to know for sure how good the air quality is in their home. At least not good enough for my personal tastes/standards/beliefs. 2) Also, I would fear that if I completely rely on an air quality monitor's results and it says the air quality is "good" - it would provide me with a sense of assurance and confidence that I don't need to do anything else to improve my air quality... But is it able to accurately test for UltraFine Particles? Which comprise 90% of the particles in the air we breathe? and are the most dangerous to our health? and more modern research is linking the Ultrafine particles to Cancer, Autism, Alzheimer's, Heart Attacks, etc. Do I trust any monitor or a bunch of monitors to consistently tell me exactly what is happening in my environment? No. Therefore, why should I go out and buy a bunch of testing equipment that has a high probability of not being accurate (or accurate enough) on air quality issues that are potentially extremely hazardous to my health - when I can invest that money into the best air purification solutions that may actually help make a difference for me and my family? 3) All that said - Off the top of my head - yes, I think mold tests are very important (probably best done by a professional) and I think radon levels need to be looked into, as well. And there may possibly be some good, accurate radon testers out there... I have not checked into it. I mention these 2 issues in particular, because I have spoken to folks who have been horribly affected by them and I know they can be brutal to our health. 4) I don't know all the air quality sensors on the market and it is possible there are some really good, accurate ones out there - I only own 4. Again, I am def. NOT an expert on air quality testing. The vast majority of my experience with indoor air quality is with air purification solutions - not testing equipment. That said, I'm not super impressed with the accuracy of the 4 testing units I have. ****This is kind of how I currently think about things for myself and my air quality. As time progresses and I run into more air testing solutions - perhaps my opinions will change. There are new technologies and solutions hitting the market every month. Thank you for your question and have a good day! 👍

Unfortunately, I do not trust these sensors so I currently think people should take whatever money they were going to invest in them and put it towards a good air purification solution(s). I don't think people can know for sure w/ these devices. Currently, I don't think affordable, accurate, reliable monitor options are available to the masses. I was looking at a video last night by the EPA that was basically saying sensors up to $5,000 are not reliable. And THAT ain't in my price range, LOL! So, my current goal is NOT to have any particular monitor device tell me my air is "Good" - but rather, find the best air purification solutions to help improve my air quality. We shall see. Thanks for the comment!👍

​@@AirPurificationEducation It's great that you are educating people so thank you 😊

A few weeks ago - I even saw the Director of The Healthy Buildings Program at Harvard say that "we now have inexpensive indoor air quality testers that can provide us with the quality of our indoor air." LOL!! 😆WRONG!! They will give you some nice, pretty numbers and graphs but are they really accurate?!? Consistently, all the time??? People tend to simply regurgitate what others say and most folks tend to accept too much info. as fact. I've worked with many different manufacturers in the Indoor Air Quality Industry for over 15 years - so I KNOW most of them LIE about at least some of the specifications associated with their products. Unfortunately, ya gotta question EVERYTHING any company in this industry states about their products. I am now seeing that some air purification companies are lying or fudging the truth about the results of their 3rd party tests... UNBELIEVABLE! But, no agency is checking to see if they are being truthful. There are MILLIONS of dollars on the line here and many folks will do ANYTHING to line their pockets. Really angers me! 😠

Thanks 4 the question Clarence. If you are asking if a sensor should detect the particulates coming from a cigarette - then, I would say "Yes" for sure... if that is what you were asking. Thanks! 👍

Thanks for the question. I think it depends on how small of a particle size you are willing to evaluate. You can get the Dylos DC1100 for less than $300 and it may be a decent solution to help you evaluate your environment at about .5 microns and above. www.dylosproducts.com/wocrandshair.html It won't tell you about ultrafine particles but for .5 microns and above it may be a decent solution. Thanks and Good Luck!👍

@@AirPurificationEducation The Dylos seems to be a Known Quantity, and that works in its favor in the flooded market of no-name AQMs. Have you listed the other monitors that you own? I wouldn't mind looking into them, even with the caveat that you don't know whether or not to trust them. In any event, I'll keep watching for future developments.

I also have the IQAir AirVisual Pro, QingPing QP Pro and ATMO. In general, I currently believe a sensor will probably be more accurate if it tests for 1 thing like the Dylos only tests for particles. The inexpensive units that test for PM2.5 (and maybe smaller particles) and also some VOCs and AQI... and have nice displays and apps. with pretty graphs, etc. All these types of offerings came in the last 10 years I think and I tend to think they are more "Jack of all trades, master of none" type offerings. Many consumers are generally enamored with the apps. and nice graphs, etc. and oftentimes don't really think too much about how accurate they actually are. The manufacturers know what most consumers like to see. I saw a guy 2 weeks ago saying the CO2 readings for the IQAir sensor was way off from the two CO2 sensors that he had that only tested for CO2. He felt like the IQAir sensor was way off in it's reading. I also saw another guy about 2 months ago totally ripping the VOC sensor/testing abilities of some of the inexpensive monitor units. He was basically saying they were garbage for testing for VOCs. I think these solutions will become more sophisticated and accurate in the coming years as companies integrate AI with them and we get more talented engineers working on the solutions. Super smart, talented Engineers is where I currently place my hope/optimism for the sensor device industry. I do look forward to the day I can actually strongly recommend a reasonably priced, accurate sensor for folks because so many are looking for one. Thanks! 👍 @@paynetyler4173

Thank you for your comment! "the whole time which is excellent air quality." The Dylos DC1100 Pro's air quality readings were definitely NOT showing "Excellent Air Quality" based on their definitions of the readings their monitor was displaying. Some of my current opinions on this issue are: 1) PM2.5 readings are not really taking into consideration ultrafine particles which are .1 to .003 microns in size, IMO. And the UF particles are the most plentiful and most dangerous to humans. Therefore, if we do not have a monitor/sensor which can accurately tell us this variable about the air we are breathing - then, we cannot simply say "the air quality is good". 2) There are potentially over 15,000 different chemicals in the air we breathe and the Dylos DC1100 Pro does not even check for these - it only focuses on some of the larger particles. And I currently think the Temtop unit is probably not too accurate for VOCs/chemicals + all air quality monitors that claim to test for TVOCs - have a different set of chemicals/VOCs that they test for... they don't all test for the same ones... and they don't all test for all of them, for sure... So, we can't say we are "Good" from a TVOC standpoint, either. 3) Standardizations for what is considered to be "Good, Healthy" air quality today is different than the standardizations from 30 years ago... And Standardizations for what will be considered "Good, Healthy" air quality in 10 - 30 years will also be different and more stringent than what we currently consider to be "Good, Healthy" air quality. As results from more research and long-term studies become available and our testing capabilities improve with better technologies... The "Good, Healthy Standardizations" will most assuredly become more and more stringent over the coming years... - as that has been the consistent trend over the past couple of decades. For these 3 particular reasons and more which we won't get into - as we could be here all day, LOL!😆 I currently do not agree with "So your AQI was below 12 the whole time which is excellent air quality." There is A LOT more to it... Thank you for your comments!👍

Yes, I also have the IQAir particle tester and I'll eventually do a video on it, as well. Thank you for asking!👍

@@AirPurificationEducation I look forward to that comparison.

It is definitely "on the list" - thanks!😀@@timconnell5878

@@timconnell5878 Of Note: I just went to the EPA site and was watching one of their videos and they literally had a picture of the IQAir sensor with some other sensors and they classify them as "Air Sensors" $100 to $2,500 and they said the following: 1) "tend to be impacted by temperature and humidity, especially high humidity. They can over or under report PM concentrations and they have a wide variation in precision. 2) This means agreement between sensors of the same make and model could be very good or very poor. Also, PM sensors do not detect very small particles. Anything less than 0.5 microns. Or reliably measure larger particles with sizes over 2.5 microns. Lastly, while many sensors have identical internal components, the packaging and placement of the components can result in different data quality." 3) and this, "They may provide less accurate measurements than regulatory monitors and may not operate well in extreme environments like high temperatures, humidity or pollution. Also, many people operate sensors with limited, if any, quality assurance. Currently, some sensors lose their ability to take accurate measurements over time. Finally, sensors may provide data outputs every minute or second. Note: with more frequent sampling, there can be greater uncertainty in the measurement itself and how to interpret any potential effect on your health." ***So, it doesn't sound like the EPA feels "Air Sensors" $100 - $2,500 are super accurate - for what it is worth.

Hello and sorry for the issues you are going through. 🙁 1) Unfortunately, the vast majority of air quality sensors/monitors on the market are probably not super accurate on many readings and probably none of them do a really good job of sensing for ultrafine particles (.1 to .003 microns) which are the most dangerous to humans and the most plentiful in the air we breathe. So, I don't want people to see "Good" air quality readings on their units and think "everything is great". If air needs to be tested - I do believe it is best to go with a professional as they will probably be more accurate. 2) For an Air Purifier: I would currently go with the IQAir HealthPro Plus as it is elite for particles and even ultrafine particles, as well. Plus, it has a good amount of carbon for VOCs and odors. amzn.to/3NIJ6Uq That unit would currently make me feel safest in your situation. Thank you!👍

Unfortunately, I don't currently have a recommendation for this. No device tests for all the pollutants in the air (particles and VOC's). And none of them really test for the most dangerous and most plentiful Ultrafine particles (.1 to .003 microns). Plus, they can't really tell you if you have mold or what other dangerous particles may be in your air. You would have to do a separate mold test or bring in a professional. And because of this I currently don't really have any recommendations on any particular unit. I would recommend a professional air quality tester if you thought you had any type of issue. Thank you!

Yes Ben, me too, LOL!😆 I think it is very difficult to accurately test for particles in the air - esp. the smaller ones. And testing for VOCs/chemicals is supposed to be even harder. + when we add the fact that there could be 15,000 + chemicals in the air... I think, it is a very daunting task for a single air tester/monitor to be accurate for all these things. All that said, some day, hopefully soon, a company with genius engineers... - maybe leveraging AI (as some air quality testing companies are currently doing) - will be able to do a good job and at a reasonable price. Fingers crossed! 🤞

Yes, you are correct. I could have stated that better in the video. Thanks!👍

Hey Greg, thanks for the feedback. No, I haven't been playing with my air sensors for a while as I'm trying to bang out some air purifier review videos - in hopes of updating my "Best Air Purifier of 2024" video in the coming weeks. But, I did watch an interesting video yesterday on an engineering channel called, "An ACTUALLY smart air quality monitor (it's open)". kzfaq.info/get/bejne/kNh-YNR0ysWRo2g.html&ab_channel=GeerlingEngineering They say Belgium is requiring to have CO2 and PM2.5 monitoring systems in all new construction. I believe this will be coming to the US for schools, office buildings, etc. in the coming years. They review a sensor called AirGradient that is less than $200 but they never question the accuracy of the solution. I wonder how accurate it actually is. Most folks just "trust" the equipment performs at the correct levels and most folks LOVE the nice looking graphs. The AQ sensor manufacturers know this, for sure. And don't even get me started on the ultrafine particle issue...LOL! There are a gazillion companies making these solutions now as I think the market for such devices for buildings is gonna absolutely explode in the near future. I do hope most of them are accurate - we shall see...

​@@AirPurificationEducationthanks - interesting video. Just btw, I was in a tunnel again today, and I came to a point with heavy traffic congestion - the PM2.5 readings increased to approximately 25

Update on the P10 - I've been waiting patiently for an official high-ish PM2.5 reading in my area - today's the day (they've done some back burning) - the P10's reading is within the ballpark of the official reading. 🕺 P.S ultrafine particles aside, Sydney's PM2.5 values are generally very good. PM10 goes into the "fair" region in various areas much more frequently than PM2.5. P.P.S unfortunately I've decided I can't trust the readings from my air purifier - it simply doesn't appear to be picking up the PM2.5 in the current slightly smoky atmosphere P.P.P.S the sensor on my very old Sharp FU-W53J *is* picking up the smoke - I can't get an actual measurement from this one, but at least the light is amber, which means "fair". Both the measurement & light on my new purifier (Breville LAP308) indicate "very good", which is definitely wrong

Yes, the air quality sensors on air purifiers are not really to be trusted, IMO. The manufacturers LOVE to try to "sell the technology" and nice graphs and interfaces to consumers but unfortunately, I think they are oftentimes really inaccurate... Thanks for the update!👍 @@gregsullivan7408

It can only tell us the particle counts down to .5 microns so, you could buy it... but I don't know how much that really helps someone determine how good the quality of the air is in their environment. I guess if we want the least amount of .5 particles and larger in our environment - then it may be beneficial. It is only sensing about 4% of the larger particles in our space. The Ultrafine particles (.1 to .003 microns) are supposed to be the most dangerous to us and they are supposed to comprise 90% of the particles in the air we breathe and it does not address these. Plus, it will not tell us if we have too much mold, CO2 or (fill in the blank) in our air or if we have too much of any of the 15,000 different chemicals/VOCs that could be present in our air. So, I just want folks to understand exactly what they are getting... When it says we have "Good" air - it is only referring to fewer .5 microns and larger in our air. But it does not mean EVERYTHING about our air quality is "Good". One would need more testing equipment or testing experts to test for other possible issues. I hope that makes sense. Thanks!👍

Yes thank you. I’m trying to find something that will tell me all of that… vocs etc. any recs?

Unfortunately, I don't currently have any suggestions. Different units will test for different types of VOCs and IDK how well they do it as that is supposed to be even more difficult to test for than particles. Eventually, I think I will hopefully come across some units I can trust and that I think are accurate... I think we may need somewhat of a leap in technology for better accuracy vs. what we are currently dealing with (at least in the 'reasonable price range'). All that said, if .5 microns is 'good enough' for your needs then I do think the 1100 is a decent unit for the price for particles. It will give you some idea. Better/more accurate equipment is probably on the way as some companies are integrating AI into their solutions and we'll hopefully have better competition in the not too distant future. Many more players are entering the game as "air quality issues" and solutions are starting to become more popular. @@dru24334

Thank you for sharing your experiences.👍 I'm gonna review a Coway 400 hopefully soon - it is the next unit I have my sights on. Yes, I am a big fan of the IQAir Healthpro Plus unit and I also have an IQAir Atem which is much less expensive ($399 on their website). I used that on my desk and the air it blew on my face is supposed to be of similar quality to the HealthPro Plus. I was in a large room at work so it was very possibly a superior solution for me than the HealthPro Plus I used to have sitting next to me. The space was very open and over 5,000 sq. ft. so the HPP would never achieve any true "air exchanges". Thank you for your comment! 😄

I am not too crazy about air quality testers, in general, as I think they tend to be somewhat inaccurate. That said, currently, I do lean towards the Dylos DC1100 Pro for particles (@ .5 microns and larger) and you may wish to view the limitations of the unit (and most all air monitors, in general) in this post: airpurificationeducation.com/dylos-dc1100-pro-vs-temtop/ Good Luck!👍

Yes, of course. 😃 1) What is the square footage of the room you want to put it in? Plus, how tall are the ceilings? 2) What is the primary issue you want the air purifier to help you with? Allergens or odors or Wildfire smoke or something else? That will help me - thanks!👍

@@AirPurificationEducation yup would make sense to include that info, we have a winix 5500-2 for our office, but looking for something for the whole house. 2400sqf with 8 foot ceilings.

Air purifiers work best in the room they reside in so they can try to attain some "air exchanges"... Generally, people will put them in their bedrooms and family rooms/open to the kitchen as they tend to spend most of their time in those 2 places. If you want a whole house solution that hooks up to your HVAC system - then you could check with Amaircare: amaircare.com/contact-us/ They could help you size a solution that will help your entire space as it would hook up to your HVAC system. Does it work as well as a really good stand alone unit in a bedroom? I don't think it will be able to beat out an IQAir HealthPro Plus for particle filtration in a bedroom but it would provide you with "better" overall air quality throughout your home. That said - what in particular do you want the air purifier solution to accomplish for you?@@markoa6999​

@@AirPurificationEducation My educations about air quality started like this. We have a 3D printer in our office, which is enclosed 3D printer which also sits in its own enclosed cabinet, currently not vented and no air purifier. We print using PLA only so I am not too concerned with toxicity but are concerned with particles in the air or size of the particles. I purchased my first air quality monitor Boesan from Amazon (made in China) and it measured PM 2.5 and 10 to be very low, formaldehyde also very low but TVOCs were through the roof. I purchased 4 other air quality measurements devices and they were all over the place, the only place they agreed was outside, and I live an hour north of Toronto so our air is fairly good specially during the winter months. So no I realize that can’t fight the battle on all fronts and realized that it’s not the VOC’s or TVOC’s you should worry about but the fine particulate matter as TVOC’s could be super high but might not be toxic. Our house is a few years old and we have t painted in a while so even though paint will release VOCs it does go down over time same as the furniture and hardwood floors, they will off gas less and less. So as from your videos even with those 5 different air quality monitors I still have no clue as to what is in my air so my goal is to do what I can and reduce the particulates in the air as much as I can. Our furnace is Merv 14 which I have front and back added a charcoal impregnated membrane and the second is the Winix 5500-2 as of right now. I move it from our office to the living room back and forth. So this is my goal, reducing the particulate matter size, or removing the sub 0.03 micron particulate from our air. Sorry for the long story but your reviews is the only one aI can find that I fill cuts through the bulls$&t like a laser. Thank you.

Thank you for your feedback! Can you please show me the link to the article? I'd really like to see it. Yeah, I wouldn't doubt it at all. I think it is very difficult to accurately test for small particles and I've heard it is even harder to accurately test for VOCs. I do think eventually we'll have much better/accurate options for testers in the future. Hopefully in the near future. Thanks!👍

Dylos don't actually claim that the 1100 Pro is "PM0.5 & PM2.5". They claim that it has two particle size ranges - 1: greater than 0.5 microns, 2: greater than 2.5 microns. It produces readings as a concentration of particles per unit volume, whereas a "PM" reading is actually the total aggregate MASS of particles in a size range. If one wants "PM" measurements, they should look at the model 1700-PM, which really can produce PM measurements.

Thank you for the clarification/information Greg! Good stuff!👍 @@gregsullivan7408

​​@@AirPurificationEducationYou're welcome, but I made another reply with a link, but it appears to have been deleted - I'll try again, without the link: the 1100 Pro's readings actually can be manually converted to PM2.5 & PM10 - it's easy to find with Google. For PM2.5: first subtract the >2.5 count from the >0.5 count, then divide the result by 100. For PM10: divide the >2.5 count by 3, and add that to the PM2.5 result. The Tempto in this video appears to be absolutely useless for PM10 - it's measurements are out by orders of magnitude, assuming the Dylos is accurate. Afterthought: the Dylos doesn't actually have a >10 range. Could it be possible that the Tempto is (correctly) ignoring particles that are >10, for it's PM10 readings, but the Dylos is including them? That could explain the huge discrepancy. The link I found that explains how to do the manual calculations doesn't actually refer to PM10 - it instead refers to it as "total mass".

To the OP: you say you want something to measure "ultrafine" particles. The definition of "ultrafine" is anything smaller than 0.1 microns. (!!). Do you really mean that? It's even extremely difficult to measure particles ten times that size (PM1.0) - refer to an article by IQ Air, in which they state that particles in this size range can behave more like a gas, than a solid "particle". So, even monitors that purport to have a PM1.0 capability probably aren't doing a good job - it's an area still under research.

Thank you for the comment. Hey, let's be real. Germans are way ahead of the curve in many areas and on many issues and I'm not saying that just because I'm 25% German, LOL!😆 Yes, I have come across about 5 different topics/issues in the air purification industry the past several months which do NOT provide strict, black and white definitions/parameters that all sources agree on. 1) PM2.5 - the definition of this depends on the source I look at - which is crazy to me. And many sources will say something like "particles that at 2.5 microns in size and less..." LOL! What does "and less" exactly mean? 2) Particle sizes: depends on the source I look at... some will say particle X ranges in size from 1 micron to 3 microns... another source will say particle X ranges in size from .1 microns to 2 microns... and on and on... 3) I do believe part of the reason that the confusion exists is because it is EXTREMELY Difficult to accurately, consistently test for and track small particles. And as testing technologies improve over time - we become better at actually knowing the truer size ranges of the particles... this could be part of it. So, yeah, it would be great if we were all always talking about the exact same definitions but... perhaps some day. Thanks!👍

Thank you for your comment. 1) I have spoken to many very sick people through the years - who became ill from the air they were breathing. I think more than anything - I want people to really think hard about any air quality device that reads "Good Air Quality"... and not just assume "everything is Good with my air quality and I can't get sick". Recently, I had both a Temtop and an Atmo air quality monitor, both agree with each other that the Air Quality was "Good" in a hotel lobby that was one of the 5 worst VOC/Chemical environments I have been in - in the past 15 years. I am sure the employees who work there will become sick over time if they are exposed to these VOCs/chemicals on a daily basis - like they were (because it was the same issue months earlier as this was my 3rd visit in 18 months - and always the same terrible VOC issue in the lobby and stairwells). Unfortunately, management can easily get a Temtop and show the employees a "Good" reading to calm them down and get them to "go back to work" if they ever questioned the air quality they were working in. I think that is a Terrible scenario and I want to “open some eyes” on this issue. A few years ago, I consulted with a guy who got super sick from the workplace he was employed at... and most all his coworkers also got sick... Cancer, severe chemical sensitivities, etc. real horrible life changing illnesses... He became “homebound” and spent tens of thousands of dollars spraying something on the walls of his home so he could co-exist in his own house. He hired a “Detox Expert” and over months he gradually lost a ton of weight by eating a new diet. He got down to about 130 lbs. And said his family and friends thought he looked too thin but he said he was finally starting to feel better and obtained a ton of energy. He was getting better but unfortunately, not all his coworkers were as fortunate. I can bet the Temtop would have told management and the employees in that office that the air quality was "Good" and there was nothing to worry about… When in reality - nothing could have been further from the truth and they were all being poisoned on a daily basis. So, I want people to analyze it all much more and question everything.... esp. the accuracy of the air quality monitors. 2) “If you want to have verry accurate device, that would tell you if you are breathing mold , asbestos and the whole range of particles, it would cost thausands, not hundreds .” I think even super expensive monitors may currently lack the technology to provide us with accurate readings on maybe most of the pollution in our air… We may actually require a severe “tech. Improvement” to get us to the right level of accuracy in our air quality readings. Some day, hopefully soon… I think. 3) “Imagine if you have a very sensitive and accurate device and it shows you poor air quality in your town, house , work place and every hotel room.. what can you do about it? Bring your air purifier everywhere?” If we have an accurate air quality tester and it provides us with a reading(s) which identifies some air particles or VOCs in our bedroom or a certain concentration of particles that increases our chances of cancer by 57% or increases our risk of alzheimers by 60% - then, I think the answer is self evident. Yes, we’d do whatever we needed to do to cut the risk down significantly. The problem is, it will take years to obtain: A) that type of air quality monitor accuracy and B) the results of research in these areas from an air pollution cause/effect standpoint…. But it IS coming, IMO… 50 years from today our knowledge of the overall effects of pollution on our bodies/minds long term will probably improve to the degree that the harmful effects of cigarettes on our health did over the 50 years after the 40’s… something like that… it just takes a lot of very smart people working on it… a lot of money for the research… and a lot of time… With those 3 variables - a lot can be accomplished in most all industries. These are obviously just my opinions… but this seems to be where things are headed. Berlin passed a law recently that ALL new buildings being built are required to have air quality sensors in every room. I think this type of mandate/law will eventually be coming to the US soon (and other countries, as well) for schools, businesses/hotels, etc. It is just a matter of time. Air quality is the NEW Clean Water issue of yesterday, I think.. And I have heard some folks say this. We shall see… Wow, I really rambled - well, you can wake up now, and keep this post and read it b4 you go to sleep at night - it should most always do the trick and put you into an intense sleep mode… LOL! 😆 Thank you if you made it this far! 👍

1 )Do you recommend any monitor at all? I currently do not recommend any monitor. I will be checking out the ATMO pretty soon but - we'll see... It is VERY DIFFICULT to consistently, accurately test small particulates in the air... and ditto VOCs. It is NOT easy to do. 2) How can we even trust third party testers such as Consumer Reports if we can't trust their monitors? Consumer Reports?! Around 2007 Consumer Reports listed the Friedrich C90B as the #1, best air purifier in the world for at least 2 years in a row. I was at a dealer at that time and we sold them like hotcakes - couldn't keep them on the shelves. We make a lot of $$$$ on that unit. The only problem is... It emits OZONE!!! LOL! And CR was putting the IQAir HealthPro Plus at about #18 on their "best air purifier list". Most everyone who actually worked in the Air Quality Industry considered the IQAir HPP the #1 Best air purifier in the world... but not CR... Eventually, IQAir sent a document to CR with 10 points where they were making mistakes at evaluating air purifiers and one of the points was "Ozone is BAD for humans", LOL! So the next year CR took the C90B off their list and said, "it creates ozone and we need to do more research on this topic". THANKS CR! They are fortunate they didn't get sued to the moon. Thousands of people purchased that unit and many put it in bedrooms with their newborn babies, etc. = nightmare for CR... So, I do not consider CR an expert in the air purification industry, at all. We have to leave the air purification testing to the experts... and even then... manufacturers are finding ways to "skew the results" it seems. 3) Some day - we'll have the technology for consistent, accurate air quality testing... at a reasonable price... Hopefully soon! 🤞 4) How do we make an objective decision if we can't trust any monitor? I have 5 different air quality monitors at my home but I don't use any of them... and I don't rely on the air quality sensors of any of the 8 or so different air purifiers I am currently running... I don't trust any of them to be consistently accurate. But I do KNOW the IQAir HealthPro Plus and Aeris 3 in 1 are 2 of the best air purifiers to ever be mass produced so I have an IQAir in my family room and a 3 in 1 in my bedroom. I spend 80% of my time in those 2 spaces. A typical consumer without a decent amount of industry experience will be "lost in the endless data/manufacturer claims", IMO. As the industry is unfortunately filled with half truths and straight up lies.🙁

Have you heard about the sensors from Piera Systems? They make very bold claims about their ability to detect particle count and size not just mass.

I tend to give a lot of slack if English isn't their native language but...yeah, it could have been a bit better... Thanks!👍

Another thing - reading the Dylos can't actually produce a "PM2.5” measurement (i.e, the MASS of particles 2.5microns or less per m^3) - the model 1700 is required for that. The 1100 is presumably still an excellent device - it's just not capable of producing that specific measurement. The Temtop readings seem very oddly low - I wonder what's going on there.

I asked Temtop if this monitor was able to read any particles less than PM2.5 and they told me "No". So, this monitor - according to Temtop - does NOT read particles less than PM2.5 in size. And yes, in many places on the Internet we will see the "official" definition of PM2.5 as being "particles that are PM2.5 and less". However, I find that to be a very nebulous definition - since it doesn't have exact parameters. And that definition is the exact reason why I specifically asked Temtop if their monitor could sense particles smaller than PM2.5. I mean, Ultrafine particles are .1 to .003 microns in size and they are supposed to be the most plentiful in the air (90%) and the most dangerous to humans. Therefore, I oftentimes focus my attention on those particles. So - with the "official" PM2.5 definition... When are the UF particles being accounted for and/or a part of the definition and when are they not? And are we assuming the "official" definition of PM2.5 means all the way down to .003 microns or not? That definition is way too nebulous for me - and I never liked or trusted it. I have found many inconsistencies in definitions and beliefs in the air purification industry over the years. A lot of people just accept that companies, doctors and "experts" know what they are talking about on these issues but I don't trust anybody or any "standard" or "definition" until it totally makes sense to me. Case in point: Most people think an air purifier that says "HEPA" or "TRUE HEPA" on the box or in the advertising for the product - will actually work at a HEPA level for them. However, IMO, OVER 99% of the "HEPA" air purifiers on the market do NOT actually work at a HEPA level in the real world for consumers. There are many reasons for this and I've made some videos on it. Plus, the vast majority of people take the results from a single test on a specific product and then somehow apply those results to ALL the other products on the market in that category. I do not think this makes any sense whatsoever. In my current opinion - I think it is very, very difficult to accurately test/monitor for small particulates. I think it is a lot more difficult than most folks realize. And I think most of the particle counters on the market are probably somewhat inaccurate... at the very least, not accurate all the time. And when it comes to testing/monitoring for VOCs and chemicals - I think they are even less accurate. Because of this - I want people - the consumers, to question the information/marketing/advertising they are receiving from the these companies. I don't want consumers to see "Good" air quality on their monitor and immediately think their air quality is good and they don't have any health risks. Because - for example - this Temtop unit almost ALWAYS tells me the air quality is "Good" - no matter where I put it. I was in a hotel lobby a few months ago with HORRIBLE VOC/chemical odors in it but my Temtop said the air quality was "Good" (and so did the ATMO I have, as well). I can assure everyone - that air quality in that hotel lobby was NOT good. It was so very bad - you didn't want to stand there for more than a minute. And I was wondering how the employees were able to deal with it for so long (it has possessed the same terrible chemical odor on 3 visits over 18 months). So if the employees complained to management... All management has to do is get this Temtop sensor (or the ATMO)... Show a "Good" reading to the employees and tell them to go back to work. Unfortunately, I think the air quality in that work environment is very detrimental to the health of all the employees present. Over time, their health will be worse/compromised because of it. I have dealt with folks in the past who became super sick from their work environments - so, it is not something to be ignored. So, yeah, I want people to think some of these things through - and not just believe, the companies or "experts" always know what they are talking about in this industry... or that the monitor they have that is reading "Good" air quality is 100% accurate - and they have nothing to fear. Thanks!👍

@@AirPurificationEducation I'm sorry, but I suspect that being a Chinese company, that they simply didn't fully understand your question. The meter can produce a PM2.5 measurement, so I would be EXTREMELY disappointed if particles less than 2.5 microns were not included in the result. (just btw - I've asked them the same question, about their P10 monitor, which I've just ordered. I made myself as clear as possible - I asked them "what is the smallest particle size that can contribute to the PM2.5 measurement"). Just FYI, the reason I've ordered it is because the PM2.5 monitor on an air purifier I've had for ONE WEEK seems to have stopped working properly! 😡 Note that I completely agree with your assertion that we should probably trust your Dylos for the "subjective" good/bad results - it's quite depressing how badly your Temtop is performing. Please note that I have not read the rest of your reply yet - thankyou for such a long reply - I'll digest it later.

I think the owner of Dylos had told me the lower number on the unit was "Basically PM2.5" - if I remember correctly but I hear you. @@gregsullivan7408

You may be correct that they didn't understand me. It is possible. I never wanted to get into this whole thing with the air quality monitors in the first place. When I started my channel I just wanted to test air purifiers and provide reviews on them. Well, after getting a few different air quality monitors and messing around with them and doing a little more research... I was SUPER disappointed when I realized I couldn't trust them to help provide accurate air purifier reviews for viewers. I was very upset. This set my channel back something like 6 months... So, I already knew that over 90% of the HEPA air purifiers don't actually work at a HEPA level in the real world but I never really dealt with the air quality monitor sensors that extensively. But then, after a while of interacting with them... I began to think they may not be nearly as accurate as they portray themselves to be, either. How can consumers know for sure, right?

1) Unfortunately, I don't currently really recommend any home air quality monitors at this point in time as I think most are probably fairly inaccurate as well, and also most won't be able to provide info. on Ultrafine particles which are the most dangerous to us. + They won't be able to tell us what type of particles are in our air, either. So how beneficial are they really? 2) Also, I saw where the EPA was saying that air quality sensors from $5,000 and down were fairly inaccurate compared to the $20,000 ones they use to give us our AQI numbers.... 3) + I just talked to an air purification manufacturer last week and the guy has over 22 years of industry experience and he said something I had heard before and pretty much had suspected all along - which is, "testing for VOCs is even more difficult than testing for particles and the VOC monitors are not very accurate." 4) All that being said - It never hurt to do a mold test to make sure you don't have mold in your environment and maybe some of the radon kits/tests are accurate. So those, I think I am kinda in favor of at this point in time - although, I'd prefer people hire experts for the testing if possible. 5) So for all these reasons (and probably more) I currently would rather have people invest their money in good quality air purifiers that will make an improvement to their environments instead of buying monitoring equipment...and having no idea how accurate any of them actually are. Hope that makes sense! Thanks for the Question. 👍

@@AirPurificationEducationMakes sense. Thanks for indulging us with your industry experience and advice. This is what KZfaq is great for. Not the "OMG I bought the Dylos DC1100 and you won't believe the results!" type videos.

Yes, all that being said - I am going to try out a new personal air quality monitor that you take with you everywhere you go - called the ATMO. It's from a company out of San Fran. that has been around since 2016. They seem to have a team of engineers so that is definitely a plus in my book. They contacted me for possible sponsorship but I told them I'd buy it and check it out as that's how I currently do things. I think it is very interesting and eventually, this is the type of solution the population really needs. Personal Air Quality Monitoring everywhere you go. I don't know how accurate it is but eventually, I think some company has to be able to make some monitors that are accurate and reasonably priced. There are so many intelligent and even brilliant engineers out there all over the world + so many new technologies and AI... that I think sooner or later we'll get what we really need. We'll see - thanks!👍

@@AirPurificationEducation i got the Temtop LKC-1000S+ 2nd Gen, seems to be accurate

Anything is possible but I have the same thing and it gave different readings from the Dylos DC1100 most of the time for particles + I've seen many folks mention how inaccurate it is. IMO, the one I have seems to most always say my air quality is "Good" most all the time regardless of the true air quality. I currently think the DC1100 is more accurate for particles. That said, I'm about to get an ATMO tester soon and I'd like to compare the 3 of them to each other. I think it is more of a modern tester and may possibly be better/more accurate but we'll see. Thanks! 👍 @@Howdyx-ui7uk

I think you are correct - they haven't come out with an "Eternal Life" Air Purifier, yet. But perhaps some geniuses are currently working on it behind the scenes. Hopefully, it will be reasonably priced 😆 Thanks!

@@AirPurificationEducation LOL🤣🤣

You could try one to see what happens. In my experience, the Dylos DC1100 Pro is much more prone to giving a reading of "fair" or "poor" air quality than the Temtop which typically says the air quality is "good". The Dylos DC1100 Pro is only telling us the amount of particles in the air to .5 microns so it's not reading for VOCS/chemicals or mold or anything like that... but, if a "fair" reading can get your boss to provide an air purifier or move you to a better location then it may possibly be able to do that. You never know what its gonna say. Good Luck!👍

Yes, the air quality particle monitors in the testing stations in the US are supposed to be about $20,000 and up in price and they supposedly require constant/regular maintenance. It is very difficult to accurately test for chemicals and supposedly there are over 15,000 that could be in our air... and it is very difficult to test for smaller particles, as well. So, when they say the pollen count is high - I do think they are pretty accurate but that does not necessarily mean they are accurate for everything, IMO. Now, for hospitals and the HEPA/filtration solutions that are installed in places like this - the filters are tested after they are manufactured and I think they are also tested after they are installed in the hospitals to check for leaking (like they do at the Department of Energy) so... I do think - at least in the US - they take extra steps to make sure the filtration solution is tested periodically to check for leaking. Even the DOE said they found a 12% failure rate in the HEPA solutions they installed and checked every 6 months... I think medical institutions in the US have fairly stringent testing procedures they adhere to... however, I think it depends on what country you reside in... Just my 2 cents - thanks!👍