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).
reply>So, seems you have a choice, higher energy bills or higher indoors C02.
replyAn HRV or ERV can help with that.
What is wrong with you?
replyYou literally breath co2 out.
The reason it is high is because you fucking breath out in a closed room. Fossil fuel my ass.
That’s why at least in my part of the world the recommended standard of what is considered great ventilation (meaning in and out) is at least 1 cubic meter of fresh air per minute for every person inside.
Half a cubic meter (or something around that) per minute per person is considered an absolute minimum. Less than that and the room is considered not valid for any working conditions.
1000+ co2 and you get fatigue, slow brain, drowsiness, heavy head, etc.
But be my guest, eco-brain yourself to a slowpoke IQ.