2 ms·

I also have a CO2 monitor and see similar readings. I try to open the windows each morning before it gets hot outside to get some fresh air. I have noticed som

by lsllc 5y ago

I also have a CO2 monitor and see similar readings. I try to open the windows each morning before it gets hot outside to get some fresh air. I have noticed sometimes when it gets around 1200, I start to get headaches which are almost always relieved by either opening the windows, or going outside (having the dog sleeping in my office doesn't help either, she definitely helps bump up the CO2 numbers!). The highest I've ever seen it is around 1500.

lucb1e 5y ago
Not to be dismissive, but when I hear of an individual reporting symptom X given a meter saying Y, I always wonder whether you read the meter and then focus on whether you feel Y (ok, easy enough to control for by not reading first), read the meter only when you have a headache (perhaps it's above 1200 at other times as well, but ok that's also easy to control for if you care to), or even just get used to the pattern when it's high like in the morning before you open windows, or you can feel when the windows were open (colder/warmer depending on outside temperature). You'd need some completely random CO2 level, not have any way of indirectly knowing the value, then spend time in there and repeat it a few times to say that this is really it. However, I remember ~1000ppm being the level where studies also said that people start to report headaches. It appears to vary from person to person; both of your observations (you at 1200, GP claiming 1100 is no problem for them) are likely correct, but I wouldn't trust either observation. Just google/ddg it if you want to know what can happen at different CO2 levels.
- lsllc 5y ago
  I got the meter because I was getting headaches here and there. I haven't done a proper study, but anecdotally, if I make sure to open the windows and get some fresh air in the mornings before it gets too hot out, I'm usually ok (and the meter reflects that).

by lsllc 5y ago

lucb1e 5y ago

Not to be dismissive, but when I hear of an individual reporting symptom X given a meter saying Y, I always wonder whether you read the meter and then focus on whether you feel Y (ok, easy enough to control for by not reading first), read the meter only when you have a headache (perhaps it's above 1200 at other times as well, but ok that's also easy to control for if you care to), or even just get used to the pattern when it's high like in the morning before you open windows, or you can feel when the windows were open (colder/warmer depending on outside temperature). You'd need some completely random CO2 level, not have any way of indirectly knowing the value, then spend time in there and repeat it a few times to say that this is really it. However, I remember ~1000ppm being the level where studies also said that people start to report headaches. It appears to vary from person to person; both of your observations (you at 1200, GP claiming 1100 is no problem for them) are likely correct, but I wouldn't trust either observation. Just google/ddg it if you want to know what can happen at different CO2 levels.

lsllc 5y ago
I got the meter because I was getting headaches here and there. I haven't done a proper study, but anecdotally, if I make sure to open the windows and get some fresh air in the mornings before it gets too hot out, I'm usually ok (and the meter reflects that).