A fan coil unit (FCU), OR a Vertical Fan Coil-Unit (VFC), is a device consisting of (1) heating and/or cooling heat exchange or 'coils' and (2) fan. It is part of an HVAC system found in residential, commercial, and industrial buildings. A fan coil unit using ductwork, and is used to control the temperature in the space where it is installed, or serve more then one spaces. It is controlled either by a manual on/off switch or by a thermostat or BMS, which controls the throughput of water to the heat exchanger using a control valve (actuator) and the fan speed.
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