A fan coil is a type of heating and cooling system that is used in many homes and businesses. It is a simple, cost-effective way to provide temperature control in a variety of spaces. A fan coil consists of a fan, a coil, and a heat exchanger. The fan is used to circulate air throughout the space, while the coil is used to heat or cool the air. The heat exchanger is used to transfer heat between the air and the refrigerant. The fan coil is connected to a central air conditioning system, which is used to regulate the temperature of the space. The fan coil is a great way to provide comfort and energy efficiency in any space. It is easy to install and maintain, and can be used in both residential and commercial applications.