🏢 An Air Handler Unit (AHU) is an essential component of Heating, Ventilation, and Air Conditioning (HVAC) systems, responsible for circulating and regulating air in buildings to create a comfortable and healthy indoor environment. Let's explore its key functions: 🌪️ Air Circulation: The AHU draws in air from return air ducts, which can include fresh air from outside and recirculated indoor air. 🪟 Filtration: Equipped with filters, the AHU removes dust, pollutants, and particles, ensuring superior indoor air quality. ❄️🔥 Cooling and Heating: Depending on the HVAC configuration, the AHU can cool or heat the air by passing it over chilled or heated coils. 💧 Humidification and Dehumidification: The AHU regulates air moisture, adding humidity in dry conditions and removing excess moisture in humid conditions. 🌡️ Mixing and Conditioning: In certain systems, the AHU blends outdoor and indoor air, conditioning it to the desired temperature and humidity levels. 🌀 Fan Operation...