As mentioned there are many potential causes.
Air conditioner not blowing cold air in car.
The best setting for diagnosis is fresh air not recirculated with the air blowing out of the center vents in the dash and the ac turned on.
Checking the system from time to time is crucial to keep it in a good condition.
Turn the air conditioning on while the car is running.
The most common causes of broken air conditioning are leaks or compressor issues.
Fortunately there are things that you can do if your air conditioner is not blowing cold air.
For a more in depth look at automotive air conditioning systems read this how stuff works article.
Air conditioner if your car s air conditioner stops working on a hot day then the ride to your destination can be quite uncomfortable.
Poor maintenance of the air conditioning unit is the main culprit for car air conditioner not blowing cold air when idling.
Start with the fan speed turned to its highest setting.
Potential causes of hot air.
A ride can be even more uncomfortable if you are stuck in traffic.
When you turn on the air conditioner in your car you expect to receive a flow of fresh cold air.
Stuck blend air door.
If the fan is damaged and does not operate at full power it will not cool down the heat coming from the refrigerant.
A broken ac system that blows warm air in the car is a problem that needs to be solved for the satisfaction of cold air.
The causes why car ac not blowing cold air when idle.
If you know how to gauge and refill freon do it.
Blend air door is the reason for drawing hot air to cold air in your car system.
Having your car s air conditioning go out suddenly can ruin your day fast.
In addition you should also check the condenser fan s wiring and connection and its placement to see if it is positioned correctly.
This door is located in the ventilation system.
So make sure that you check the compressor as it could be the reason why car ac not blowing cold air after recharge.
The problem occurs at most cars at some point in their lifetime.
With little or no use during a long winter the air conditioning system may have problems when re engaged.
Sometimes might be easy and inexpensive but sometimes it might be costly.
This is the most common reason for why your car s ac is not blowing cold air.
The air conditioner won t run properly unless your engine is running.
However that s not always what happens.
Lastly the reason why your car air conditioning isn t blowing cold air is because your engine is overheating.
It s up to you how you maintain the system and how much care you have.
A number of different problems can prevent your ac from blowing cold air into the cabin and some are more serious than others.
Occasionally there could be problems with the compressor.
If your air is blowing cool but not cold the problem could be a clogged filter cooling fan problem radiator trouble or it could simply be that you need to recharge your ac.