When studying indoor air quality, we often discover an interesting phenomenon: compared to the daytime, the carbon dioxide (CO2) concentration in a room often increases significantly at night. This phenomenon not only affects sleep quality but may also have potential negative impacts on human health.

So, why does this happen?

Guangzhou Luftmy believes that the reasons for this phenomenon mainly include the following aspects:

● Human metabolic activity: At night, especially during sleep, the human body continues to inhale oxygen and release carbon dioxide through respiration. In an enclosed bedroom environment, especially when multiple people share the same space, this carbon dioxide gradually accumulates.

● Reduced indoor ventilation: Compared to the daytime, windows are usually kept closed at night, reducing air circulation. The lack of sufficient air exchange prevents CO2 from being effectively discharged outdoors.

● Indoor heating and changes in airflow patterns: In winter, using heating equipment can lead to an increased temperature difference between indoors and outdoors, which in turn affects airflow patterns. Additionally, rising warm air may cause CO2 to accumulate in specific areas of the room.

● Reduced indoor activity: Compared to household activities during the day, people's activity levels are greatly reduced at night, which weakens the natural drive that promotes air circulation.

To deal with the increased CO2 in the room, Guangzhou Luftmy suggests that you can try the following methods:

1. Improve indoor ventilation: Even at night, proper ventilation is necessary. Air circulation can be promoted by leaving a small window open or using a ventilation system.

2. Use air purifiers: Modern air purifiers can not only improve indoor air mobility but also effectively filter CO2 and other air pollutants.

3. Monitor indoor CO2 levels: Installing CO2 sensors can help monitor indoor air quality and take timely measures to maintain a healthy air environment.

4. Reduce the number of people in the bedroom: Reducing the number of people sleeping together can effectively lower the production of CO2 in the room.

5. The role of plants: Choosing suitable indoor plants, such as spider plants and sedges, can help absorb CO2 and release oxygen at night.

6. Choose appropriate building materials: Using environmentally friendly materials with low volatile organic compounds (VOCs) can reduce the production of indoor chemical pollutants.

7. Apply smart home systems: Smart home systems can automatically adjust indoor air quality to keep CO2 at optimal levels.

Overall, by understanding the reasons for the increase in indoor CO2 concentration at night and taking appropriate measures, we can effectively control indoor air quality and ensure a healthy sleeping environment at night. Through these simple and effective steps, we can significantly improve our living environment and provide better support for physical and mental health.