Indoor surfaces act as sponges for harmful chemicals
6 comments
·September 23, 2025crazygringo
fnordian_slip
I bought an aranet 4, it's quite eye opening how you sometimes get a lot of CO2 buildup without even noticing.
I mostly solve any issues with VOC by "Stosslueften", but if that's not enough because the air quality outside is too bad, a CR box is an effective, easy to build and almost perfectly silent design, especially if you do it with decent quality pc fans.
2rsf
The article doesn't seem to have immediate actionable recommendation, and is mainly a brick in a wall that can lead (or not) to better design decisions.
One unclear point for example is what happens with the deposited toxins, how hard is it to clean them? are they transferred by touch?
null
amelius
Sounds like good news. The sponges take harmful chemicals out of our environment.
crazygringo
...to then re-release them gradually over the next days and months. So, no.
The more we study it, the more we learn how harmful the air inside our homes is.
That's why fresh air is key. Crack a window or two open. Buy an air monitor that monitors CO2 (good proxy for overall freshness), VOCs (sometimes these build up much faster than CO2), and PM2.5.
If CO2 or VOCs are high, open windows more. If PM2.5 is high and coming from outdoors, turn on an air filter.
Yes, this means your heating and cooling bill will be a bit higher. But for your health and concentration, it's worth it.