Proper ventilation keeps the air fresh and healt indoors. Like the lungs, homes need to be able to breathe to make sure that fresh air comes in and dirty air goes out. Air indoors can build up high levels of moisture, odors, gases, dust, and other air pollutants.To provide good air quality, enough air needs to be brought in and circulated so that it reaches all areas of the home. For almost all homes, windows and structural elements contribute to bringing in fresh air.

The decision to use house ventilation is typically motivated by concerns that natural ventilation won’t provide adequate air quality, even with source control by spot ventilation. Whole-house ventilation systems provide controlled, uniform ventilation throughout a house. These systems use one or more fans and duct systems to exhaust stale air and/or supply fresh air to the house.

Miwind Air Curtains are widely installed at the entrances,places such as supermarket, shops, malls, restaurant, office, stores etc. Sometime will install on the drive-thru window.

3 years for the motor warranty for factory defects, 1 year full product repair warranty for factory defects.. Miwind high quality product reputation and we have strong after-sales service. CE Certified.