What are 'fan coils' used for?

Fan coils are primarily used to circulate air over a coil that can either heat or cool a space, making them an essential component in HVAC systems. They contain a fan that moves air through the unit and over heated or chilled water coils, allowing for efficient temperature control in a room or area. When the coil contains hot water, the fan blows warm air into the space, and when chilled water flows through the coil, it emits cool air.

While fan coils can contribute to overall comfort by impacting humidity levels and air quality, their main function revolves around the direct process of heating and cooling air through the thermal exchange with the coils. The fan's role is critical in ensuring that conditioned air reaches the occupied space effectively and uniformly.