Fan sound effects

Filmoscope: cooling fan, no slide change

3082 888

Hospital, fan running, air outlet

3665 993

Ventilation in the passenger compartment

3607 1129

Working ventilator in a hospital

3047 715

Medical ventilator

4791 1729

Wind generator: ventilation

3353 683

Dehumidifier turns on

4682 1315

Air conditioner is working

4712 1326

Air conditioner

284 4

Wind farm

373 5