Fan sound effects

Filmoscope: cooling fan, no slide change

2801 885

Hospital, fan running, air outlet

3449 992

Ventilation in the passenger compartment

3331 1127

Working ventilator in a hospital

2562 710

Medical ventilator

4462 1719

Wind generator: ventilation

3107 682

Dehumidifier turns on

4448 1312

Air conditioner is working

4439 1321

Air conditioner

66 3

Wind farm

72 3