The country's most well-known manufacturers of jet fan coil air-conditioning units, Shandong Wu Lingyuan City, the country's leading fan coil units in daily use should pay attention to good dust treatment is usually installed directly in the fan coil air-conditioned room, which served the state and worked for quality will affect indoor air quality and noise levels. It must do the air filter, drip tray, coils, fans and other major components of the routine maintenance worked to ensure that the fan coil functioning properly, do not produce negative effects. Coil charged with hot and cold water to cool the heat transfer to the air through the fan coil important mission. In order to ensure efficient heat transfer, it requires the coil surface must be kept clean. However, since the fan coil are generally equipped with coarse filter, the perforations is relatively large, at the beginning of use, it is inevitable dust through the filter and adhere to the surface of the pipe or fin coil. If not clean, it will cause the coil to reduce the amount of hot and cold water and heat exchange coil outward through the air, thereby making heat exchange efficiency of the coil can not be fully realized. If a lot of dust adhesion, even part of the air passage between the fins are blocked, then the fan coil while also reducing the amount of air to air-conditioning performance is further reduced.