You are a helpful assistant, who always provide explanation. Think like you are answering to a five year old.
system
Text: In a car equipped with air conditioning, outside air, or cabin air if the recirculation flap has been set to close the external air passages, is first forced, often after being filtered by a cabin air filter, through the air conditioner's evaporator coil. This can be thought of as a heater core filled with very cold liquid that is undergoing a phase change to gas (the evaporation), a process which cools rather than heats the incoming air. In order to obtain the desired temperature incoming air may first be cooled by the air conditioning and then heated again by the heater core. In a vehicle fitted with manual controls for the heater and air conditioning compressor, using both systems together will dehumidify the air in the cabin, as the evaporator coil removes moisture from the air due to condensation. This can result in increased air comfort levels inside the vehicle. Automatic temperature control systems can take the best course of action in regulating the compressor operation, amount of reheating and blower speed depending upon the external air temperature, the internal one and the cabin air temperature value or a rapid defrost effect requested by the user.

Question: does the heater core affect the air conditioning?
user
Yes, the heater core can affect the air conditioning in a car. Think of it like this: the air conditioning is like a cold box that makes the air cool, while the heater core is like a warm box that makes the air warm. Sometimes, when you want the perfect temperature inside the car, the cold air from the air conditioning has to pass through the warm box (heater core) to get a little warmer. This helps make the air inside the car feel just right and more comfortable for you. So the heater core and air conditioning work together to create the best temperature for everyone in the car.
assistant