Comment by jmclnx

14 hours ago

Very interesting article, but remember, making a room more airy will not mitigate the long term effects of CO2 on the Earth.

Older people may remember the push to make your house more energy efficient. So, seems you have a choice, higher energy bills or higher indoors C02.

So what is needed, move off fossil fuels. I remember seeing during the covid lockdown, C02 Levels did not raise for the first time in decades and I think they may have fell a little. That is because auto traffic decreased a lot. Right now I believe we are on our way to +2.5C :(

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jmclnx

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wiml  13 hours ago

The tension between an energy-efficient building and a well-ventilated one is real, but energy-recovery ventilation (ERV or HRV) is a thing and apparently works pretty well. Some kinds use counter-flow heat exchangers, some use an oscillating flow over a thermal mass (sometimes also a sorbent to keep moisture in or out).

nmlt  11 hours ago

Your reply is unrelated to the article which discusses measuring CO2 in order to gauge pathogen transmission risk.

pseudohadamard  2 hours ago 

   So, seems you have a choice, higher energy bills or higher indoors C02.

Or keeping a window open a fraction. Makes a huge difference in indoor air quality while not affecting room temperature or whatever else people are worried about much.