Fan sound effects

Filmoscope: cooling fan, no slide change

2944 887

Hospital, fan running, air outlet

3577 993

Ventilation in the passenger compartment

3496 1129

Working ventilator in a hospital

2755 712

Medical ventilator

4580 1722

Wind generator: ventilation

3277 683

Dehumidifier turns on

4580 1314

Air conditioner is working

4579 1325

Air conditioner

197 4

Wind farm

197 4