Without the need of ductwork, a fan coil unit (FCU) may heat or cool a space. It is made up of an outdoor condensing unit, a fan, and an inside coil. Depending on the desired temperature in the room, the fan pushes air through the refrigerant-filled inside coil, cooling or heating it. The room is then filled with this heated or cooled air to maintain a cozy temperature.
In addition to certain households, workplaces and other commercial buildings frequently include FCUs. Vertical fan coils (VFCs) and horizontal fan coils (HFCs) are the two basic varieties. While HFCs are better suited for larger rooms since they can be positioned horizontally on the floor or ceiling, VFCs are often utilized for smaller spaces because they can be mounted vertically on walls or ceilings.