Anecdotally, we have an air monitor gadget and the highest I've ever seen (small home office, fairly well-sealed, winter, me working there all day with no ventilation) was around 1100-1200 PPM. I get that two people in a small sealed bedroom could push it higher, but 3350 PPM?!
Most wakeups are from noise (I can see it in the data) but high CO2 levels can also make me a lighter sleeper.
Not sure where you’re based but in Europe the priority is mostly on heat isolation, so air movement suffers. The US is better in that regard. There was a big thread on that topic on X the other week (Peter the indie hacker initiated it and there were some good recommendations in case you’re the owner of the flat)
It's important to measure this somehow - I do this with a $100 Co2 sensor and display I got off amazon, but you seem to already have these sensors available.
“Almost 2%. The reduction in carbon-dioxide concentration when 60 square centimetres of plants were placed in an office, according to one study.”
Does it really matter in the grand scheme of things tho ? I have a captor at home, even when I leave the door opened and CO2 remains low, I don't notice anything different at wakeup.
I notice a difference if I move between a ventilated room vs congested one. I suppose it depends on what's causing the concentration. If it's human breath, I'll smell freshness. If it's e.g. burning a portable gas heater (common in my part of the world), I'll feel like I'm not inhaling smoke (probably small amounts of CO).
A few years ago, I would sometimes wake up at night and open a window wide, or go open the outside door and stand there for 5-10 minutes.
we rarely get over 1k here
“These results are not applicable to typical buildings, where outdoor-to-indoor air exchange already removes volatile organic compounds (VOCs) at a rate that could only be matched by the placement of 10–1000 plants/m2 of a building's floor space.[2]
The results also failed to replicate in future studies”
Big fan of plants though, help me feel calm