4 ms·

The author did bring the sensor outside and got a reading of 480

• mcv 4y ago
  Up to that point, I also assumed the meter was broken, but if it still shows reasonable values outside, I'm afraid it's the house that's broken. Check the ventilation system to see if it's working properly. It may need to be cleaned or replaced. Maybe have some plants in your home. Maybe replace the gas stove with induction. Or accept the higher CO2 levels. CO2 isn't personally dangerous like CO is. It's not ideal, but I think those warnings about loss of cognitive function are excessively alarmist.
  • psychphysic 4y ago
    One caveat is that the sensor is likely calibrated at least at atmospheric CO2 levels. So many types of "broken" CO2 sensors might accurately work around 400ppm.
    • deely3 4y ago
      Oh, thats smart suggestion.
  • def_true_false 4y ago
    I'd guess the author has a window that doesn't open completely or doesn't have windows on opposite sides of the building. In my experience, it's much harder to get good airflow if the path looks like a U or an L, instead of a straight line.