Hi. I’m interested in indoor air quality. Are any standards published in Switzerland? Particularly for indoor carbon dioxide ppm. An [admin.ch](https://admin.ch) link would be ideal.

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  2. Most buildings with the “Minergie” Standard have absolutely terrible interior air quality. Too small ducts, not enough of air filtration/circulation.

    Literally, as soon as you see a building where you can’t open the windows, you will run into issues. This got especially apparent in the Covid crisis, when schools realized that their air quality is sub-standard. And that it has negative effects on kids developments.

    Another factor is the division between public and private schools. While practically all private schools are built within “traditional” structures with emphasize on ensuring enough oxygen for kids brains, public schools are often built with extra layers of isolation to reduce operational and heating costs. However, this also reduce air quality by sealing in bad air. Resulting in a performance loss for students and teachers alike.

    Studies have shown a direct increase of performance when improving air quality. Even an air filter can already help with that.

  3. SIA 382/1 is the swiss norm for ventilation of indoor spaces. There are 4 Air quality zones defined:

    1. RAL 1 High Airquality, Labs, Production Facilities
    2. RAL 2 Middle airquality, ppm<1000
    3. RAL 3 Average airqualiry, 1000-1400 ppm (Typical for office and living spaces)
    4. RAL 4 low airquality (storage rooms, smoker rooms etc.)

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