What can cause the ac in your car to blow but not cool air?

* Low refrigerant level: This is the most common cause of AC problems. Refrigerant is the fluid that circulates through the AC system and absorbs heat from the air inside the car. If the refrigerant level is too low, the AC will not be able to absorb enough heat and the air will not be cool.

* Compressor problems: The compressor is the heart of the AC system and it compresses the refrigerant gas. If the compressor is not working properly, it will not be able to compress the refrigerant and the AC will not be able to cool the air.

* Condenser problems: The condenser is a heat exchanger that cools the refrigerant gas. If the condenser is not working properly, it will not be able to cool the refrigerant and the AC will not be able to cool the air.

* Evaporator problems: The evaporator is a heat exchanger that absorbs heat from the air inside the car. If the evaporator is not working properly, it will not be able to absorb enough heat and the AC will not be able to cool the air.

* Expansion valve problems: The expansion valve controls the flow of refrigerant into the evaporator. If the expansion valve is not working properly, it will not be able to control the flow of refrigerant and the AC will not be able to cool the air.

* Electrical problems: The AC system is powered by a variety of electrical components, such as the AC compressor clutch, the AC compressor relay, and the AC control module. If any of these electrical components are not working properly, the AC will not be able to operate.