The French Ventilation Regulations were published in early January 2023.
The main points to note are:
Annual ventilation assessment of indoor buildings should be performed in particular with direct reading of CO2 levels.
A concentration of less than 800ppm CO2 reflects satisfactory air renewal in occupied premises.
A CO2 concentration above 1500ppm indicates insufficient air renewal.
We've attached a link to the full translated report here:
