According to the picture, you can understand.
1, the air conditioning pipeline of automobile air conditioner includes: compressor (compressing refrigerant)-condenser (cooling refrigerant)-liquid storage drying pipe (removing moisture and impurities in refrigerant)-expansion valve (expanding refrigerant)-evaporator core (absorbing heat inside the vehicle).
2. Automobile warm air pipeline: engine (doing work and heating)-water tank (heat circulation and heat dissipation)-warm air water tank (providing heat source for automobile).
So the car air conditioner and the heater are not the same pipe.