@josh I've got AirThings devices in my bedroom and living room, and have been paying attention to CO2 levels for years. My place has good ventilation, and stays at 6-700 ppm normally. I get an alert when there are people over and it rises too much so I can turn up the ventilation. It certainly feels like it makes a difference.
@josh after getting an aranet monitor and finding that our in home CO2 levels are consistently above 1000 in the winter when the windows are closed, I'm skeptical of claims about reduced "brain function" at these levels.
@josh Hey Josh, are you sure about the percentages you quote?
From my own experiences I know, that 1500ppm can come within <30min in a crowded room and exceed that by far if time goes on. While in these cases I felt a bit slower it surely wasn`t close to a decrease in brain function of 50% or above.
@josh I’d like to get a monitor or two. Hope you don’t mind that I share a few things here. One issue I have is that many monitors seem to be “smart” devices and I wonder if they work when wi-fi is down. And are VOC readings more reliable now? Everybody and their mom has a “best air quality monitors” article on their website, but they seem to have stopped mentioning the unreliability of VOC readings, and none are looking at PurpleAir?
@josh@tsyum Some local libraries will lend out these types of devices (IMO in 2024 local libraries should have AQ devices for public use & education). The local health authority (e.g. health dept) can be a good resource, as they should have tools to measure CO, CO2, particulates, VOC and might be able to support you in some way.
@josh Is this something I should be concerned about in my personal living space as well? I spend most of my day in my bedroom (doubles as a wfh office). I open the window when possible but still not much air circulation.
@josh It was terrifying to see carbon dioxide levels increase so rapidly in real time. It got to a point I was dreading every update.
I was telling my spouse, one of the biggest barriers for us here in Brazil is being able to afford that kind of device — I have the privilege of having disposable income available to import it. It’s quite powerful to have a physical device showing you the reality of things — they’re kind of inescapable. They force you to face the problem and think of a solution.
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