I suspect I'm experiencing some of this in a small home with poor circulation. A... | Hacker News

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		shostack on Jan 19, 2022 \| parent \| context \| favorite \| on: How to build homes with virtually no heating (2020... I suspect I'm experiencing some of this in a small home with poor circulation. Any suggestions for inexpensive room monitoring sensors?

franciscop on Jan 19, 2022 [–]

I just bought one on my local Amazon version by searching "CO2 meter". While true numerical accuracy is "who knows", on rest/full ventilation it shows 400PPM and blowing at it (even gently) shows the CO2 increases drastically, as expected, so I'm happy with it.

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