CO2

Carbon dioxide, or carbon dioxide, is a colorless, odorless gas produced mainly by human respiration and carbon combustion; it is present in the composition of air in %0.04 (400 ppm), which is why even after proper ventilation the sensor reading will tend not to fall below this value. At high levels, CO2 can cause symptoms such as headaches and fatigue. Monitoring CO2 is crucial for assessing indoor air quality and ensuring proper ventilation: the air needs to be changed to dilute all the pollutants of different chemical, biological, and physical nature that have accumulated.

CO2 concentrations vary throughout the day depending on temperature, humidity, and emission from individual sources. The cause of such significant variability (i.e., the peaks you see on the app) may be associated with the number of occupants present, the type of activity carried out by the occupants, the type of room (size, arrangement of spaces), the type and manner of opening/closing windows, the air conditioning system that has little hourly change or excess recycling, and also the agricultural-urban context in which the house is placed.

It is important to remember that there are many variables in a home that affect the concentration of CO2 and the ability to dilute it over time, starting with the layout of spaces and the design of air recirculations.

It is also essential to have other arrangements, so we recommend that you improve ventilation and/or air exchange (e.g., open windows more frequently, regularly check the condition of ventilation systems: flow rates, flows, and operating times).

The optimal level is below 1000 ppm.