An air curtain is a device that creates a controlled stream of air across an opening, such as a door or window, to separate two different environments, typically inside and outside. It works by blowing a continuous stream of air downwards or across a doorway to form a barrier that prevents the exchange of air, dust, insects, and temperature between the two spaces. Air curtains are commonly used in commercial settings like supermarkets, warehouses, and restaurants to improve energy efficiency, maintain indoor climate control, and reduce heating and cooling costs. They are also effective at reducing the entry of pollutants and maintaining hygiene by acting as a barrier to external elements.
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A ventilation fan is designed to improve air circulation and quality in enclosed spaces by expelling stale air and bringing in fresh air. These fans are essential for reducing humidity, odors, and pollutants, making them ideal for use in kitchens, bathrooms, and commercial spaces. Common types include **exhaust fans**, which remove air from a room, and **inline fans**, which are installed in ducts to boost airflow. Ventilation fans help maintain a comfortable and healthy indoor environment, and many models come with features like adjustable speeds and noise reduction technologies.
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