1. Normal. Because the temperature of the indoor unit is relatively high when the air conditioner is heating. There will be no phenomenon of water vapor liquefying when it encounters cold, so it is normal that there is no water dripping from the air conditioner. When the air conditioner is heating, Freon will be pressurized by the compressor into a high-temperature and high-pressure gas, and then enter the heat exchanger of the indoor unit. After entering the heat exchanger, Freon will condense, liquefy and release heat, become a liquid and return to the compressor. This The heat release process increases the indoor air temperature, thereby achieving the purpose of increasing the indoor temperature.
2. In winter, the cold indoor air is exchanged to the outdoors. At this time, the outdoor unit may be relatively cold, which may cause frosting. However, condensation will not be generated indoors, so the outdoor unit you see The pipe (actually it is not the outdoor unit pipe, but the condensate water pipe of the indoor unit, which is usually tied along the refrigerant copper pipe) does not drip.