See eg this demo: https://youtu.be/NfTP3yhTybc?t=150 https://youtu.be/NfTP3yhTybc?t=150 I could never afford one (they're also super heavy so you have to be ca

See eg this demo: https://youtu.be/NfTP3yhTybc?t=150 https://youtu.be/NfTP3yhTybc?t=150 I could never afford one (they're also super heavy so you have to be careful your floor can take it) but I assume the idea is to replace the airflow noise of many small fans with a few much larger ones.