An Air Washer Unit is a type of HVAC (Heating, Ventilation, and Air Conditioning) system that is used to condition and purify the air in a building or room. It works by circulating air through a wet medium (usually water), which helps to remove impurities such as dust, pollen, and other particles from the air. The Air Washer Unit typically consists of a large container filled with water, through which air is forced by a blower.ï