How long to use ventilation blower?

The duration for using a ventilation blower depends on the specific situation, such as the size of the area, the level of air pollutants, and the type of blower being used. Generally, it's recommended to run the blower for at least 30 minutes to an hour to effectively circulate and refresh the air. In cases of high contamination or after activities that generate fumes, it may be beneficial to continue running the blower for several hours. Always ensure to monitor air quality and adjust the usage accordingly.