Ventilator fans are used in many home appliances for air circulation. There are two categories:
These are used to move air around rooms. This action helps to improve bodily evaporation giving a cooling sensation. Vibration levels need to be kept as low as possible.
Other Domestic Fans
Applications here include drive blowers, bathroom ventilators, attic ventilators; fan coils...The requirements for these fans are less restrictive. However, low noise capability and good resistance to environmental conditions (humidity) is important.