Preserve the basement nice and tidy by packing unused objects into containers. This way, there'll be a lot less obstruction and turbulence within the airflow route.  20 years in the past we'd seal a Basis and advise a regular dehumidifier to address the extra water vapor (humidity from the air) https://basementventilation78899.loginblogin.com/44099335/a-review-of-car-park-ventilation