3 ms·

Really glad this was published. I was looking at airgradient solution for PM2.5 monitoring, but while thinking - saw this @ IKEA and bought it. And it is in my

by jve 5y ago

Really glad this was published. I was looking at airgradient solution for PM2.5 monitoring, but while thinking - saw this @ IKEA and bought it. And it is in my short term plan to wire it with Wemos D1 so I plot values and make sense on whether IKEA air purifier helps anything or not. Because if I follow the LEDs, it's chaos - it can be RED for hours with purifier nearby. And the same without purifier - colors just like to change in my house. I have a question about precision: If the precision ±20μg/m³ - isn't it actually normal that they "extend" the green led up to 35μg/m³ then? Because that 12μg/m³ is maybe 32? Uh, looks like not even PMS5003 can reliably show you that green line with a high confidence, doesn't it? Btw here is a nice thread that shows you how to wire it up with Wemos D1 and connect to Home Assistant. People compare their readings with other meters, too. But someone says he bought multiple of those and even those show different numbers. Someone sees IEKA values 10x higher (for lower values, but within specified accuracy) than other sensor https://community.home-assistant.io/t/ikea-vindriktning-air-quality-sensor/324599/168 https://community.home-assistant.io/t/ikea-vindriktning-air-... But at least they FOLLOW the plot of more accurate sensors. I see value in that. I want to know if air purifier helps something or how much it helps.

genewitch 5y ago
As a quick aside, both the air quality things I bought say not to rely on instantaneous readings but instead to use the aggregator average reading. One has the ability to show averages and the other is more like "if the value is consistently higher than normal it's probably correctly 'high'" - so unless there's some weirdness in the Ikea one it shouldn't be switching colors unless you are very close to the threshold. It is possible that your air filter shakes or vibrates enough that it's kicking dust up, or you have poor indoor air quality. How often do you have to replace filters and how dirty are they? For reference I live in a forest, with pollen and dirt dust and people and pet dust, poor seals on windows, and open doors/screens, as well as high humidity year round; I buy the 3M 1000-1500 filters which are pretty beefy, and they last about two months before becoming uniformly dark grey on front and back. Ideally I'd replace them monthly but they're about $15 each and that adds up across three filters. I ask because I don't think my system does anything for VOC, I don't use carbon filters for the three, so I'm mostly filtering dust, pollen, clay, etc.
- jve 5y ago
  I bought this unit just ~2 weeks ago? https://www.ikea.com/us/en/p/foernuftig-air-purifier-black-60488069/ https://www.ikea.com/us/en/p/foernuftig-air-purifier-black-6... So I haven't had chance to change filters yet. Yeah, but it has high outgoing airflow, so I suppose it shakes up dust for me. It changes to red pretty fast when starting to cook, then hours, hours to bring it down.

by jve 5y ago

genewitch 5y ago

As a quick aside, both the air quality things I bought say not to rely on instantaneous readings but instead to use the aggregator average reading. One has the ability to show averages and the other is more like "if the value is consistently higher than normal it's probably correctly 'high'" - so unless there's some weirdness in the Ikea one it shouldn't be switching colors unless you are very close to the threshold. It is possible that your air filter shakes or vibrates enough that it's kicking dust up, or you have poor indoor air quality. How often do you have to replace filters and how dirty are they? For reference I live in a forest, with pollen and dirt dust and people and pet dust, poor seals on windows, and open doors/screens, as well as high humidity year round; I buy the 3M 1000-1500 filters which are pretty beefy, and they last about two months before becoming uniformly dark grey on front and back. Ideally I'd replace them monthly but they're about $15 each and that adds up across three filters. I ask because I don't think my system does anything for VOC, I don't use carbon filters for the three, so I'm mostly filtering dust, pollen, clay, etc.

jve 5y ago
I bought this unit just ~2 weeks ago? https://www.ikea.com/us/en/p/foernuftig-air-purifier-black-60488069/ https://www.ikea.com/us/en/p/foernuftig-air-purifier-black-6... So I haven't had chance to change filters yet. Yeah, but it has high outgoing airflow, so I suppose it shakes up dust for me. It changes to red pretty fast when starting to cook, then hours, hours to bring it down.