Residential airflow improves when vents, ducts, and returns are kept clear, giving your HVAC system better balance

https://seasonalhomeairquality032.laurelcurrent.com/posts/the-science-behind-uneven-cooling-in-multi-room-homes

Residential airflow improves when vents, ducts, and returns are kept clear, giving your HVAC system better balance, comfort, and overall performance.