Agreed - the lack of CO2 monitoring is a shame. I bought a relatively inexpensive CO2 monitor (~90 EUR) and it was really an eye opener. If you work in a small

Agreed - the lack of CO2 monitoring is a shame. I bought a relatively inexpensive CO2 monitor (~90 EUR) and it was really an eye opener. If you work in a small home office, the speed that you reach levels of CO2 that will have a noticeable impact on your mental faculties (eg 2000ppm) is incredible. Definitely makes you step up your ventilation game!