A fancoil unit is a type of heating and cooling system that is commonly used in commercial and residential buildings. It is a self-contained unit that consists of a fan, a coil, and a filter. The fan is used to draw air from the outside into the unit, where it is heated or cooled by the coil. The filter then cleans the air before it is distributed throughout the building. Fancoil units are energy efficient and provide consistent temperatures throughout the building. They are also relatively quiet, making them ideal for use in offices and other areas where noise levels need to be kept low. Fancoil units are easy to install and maintain, making them a popular choice for many homeowners and businesses.