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Temperature difference helps if there's no wind. In winter time CO₂ drops from 4000+ ppm to ~450 in only a couple of minutes after opening a single window (with

Temperature difference helps if there's no wind. In winter time CO₂ drops from 4000+ ppm to ~450 in only a couple of minutes after opening a single window (with inside to outside temperature difference of 50°C or higher). In summer it drops to ~600-700 and stays there, and even this takes hours.

y4mi 5y ago
50°C difference or even higher? Damn mate, even Siberia only gets around -34°C which is less then that of you target the usual 18-21°C. Your winters sound terrifying.
- theluketowers 5y ago
  Saskatchewan Canada can easily reach -40°C for several weeks during the winter.
  - JamisonM 5y ago
    What? Maybe in the most northern reaches.. even then "for several weeks" is a stretch.. even Uranium City doesn't hit -40°C every winter!
    - bbarnett 5y ago
      There is often confusion between wind chill, and actual temps. But the parent is not inaccurate, for they did not mention "each year". Even 10 minutes North of Ottawa, I saw -42C, real, not just windchill, for a week, about a decade ago.
- freeopinion 5y ago
  Winters? I thought they were referring to this last May or the previous August. https://en.wikipedia.org/wiki/Highest_temperature_recorded_on_Earth#Unverified_claims https://en.wikipedia.org/wiki/Highest_temperature_recorded_o...
  - y4mi 5y ago
    He specifically said winter but having 68-74°C at minimum sounds terrifying too, honestly
crazygringo 5y ago
That's what I've discovered over the past year! I live in NYC and my CO2 levels are fine in both the winter and on hot summer days, without even trying. But when it's 65-75°F outside in the spring/fall... CO2 builds up in my apartment like crazy. I keep the windows open and my bathroom fan on to try to suck fresh air in... but even so can't manage to really get it below 650, and with just a window cracked it sticks around 850. It's really frustrating.

y4mi 5y ago

50°C difference or even higher? Damn mate, even Siberia only gets around -34°C which is less then that of you target the usual 18-21°C. Your winters sound terrifying.

theluketowers 5y ago
Saskatchewan Canada can easily reach -40°C for several weeks during the winter.
- JamisonM 5y ago
  What? Maybe in the most northern reaches.. even then "for several weeks" is a stretch.. even Uranium City doesn't hit -40°C every winter!
  - bbarnett 5y ago
    There is often confusion between wind chill, and actual temps. But the parent is not inaccurate, for they did not mention "each year". Even 10 minutes North of Ottawa, I saw -42C, real, not just windchill, for a week, about a decade ago.
freeopinion 5y ago
Winters? I thought they were referring to this last May or the previous August. https://en.wikipedia.org/wiki/Highest_temperature_recorded_on_Earth#Unverified_claims https://en.wikipedia.org/wiki/Highest_temperature_recorded_o...
- y4mi 5y ago
  He specifically said winter but having 68-74°C at minimum sounds terrifying too, honestly

crazygringo 5y ago

That's what I've discovered over the past year! I live in NYC and my CO2 levels are fine in both the winter and on hot summer days, without even trying. But when it's 65-75°F outside in the spring/fall... CO2 builds up in my apartment like crazy. I keep the windows open and my bathroom fan on to try to suck fresh air in... but even so can't manage to really get it below 650, and with just a window cracked it sticks around 850. It's really frustrating.