Fan coils are devices designed to distribute heat or cold in living spaces to ensure optimal thermal comfort. The main components of this device are a fan (Fan) and a heat exchanger (Coil). Unlike air conditioners, where the cooling medium is a refrigerant, fan coils use water from the heating circuit of a heat pump or other hot/cold water source. Thanks to this, they achieve up to twice the heating capacity compared to conventional radiators, which makes them significantly more economical.