It is likely low on refrigerant. … This isn’t a case of “too hot” versus “too cold.” If you have too much refrigerant in your A/C system, it will actually blow hot air (the same as having too little refrigerant). To get the coldest air possible, the amount of refrigerant in the system has to be “just right.”
What happens if you overfill freon car?
Overcharging the unit can cause permanent failure of the compressor, which is the pump for the refrigerant. … When this happens, though, the system will power down and must be reset and the overcharged refrigerant removed before it will power back on.
How do I know if I have too much freon in my car?
Lack of Cooling
The most evident symptom of overcharged AC is that it will not cool the car. Due to the overcharged status, the liquid in the system doesn’t have enough room to depressurize. As a result, it will not be capable of providing sufficient cooling in the interior of the car.
Why is my AC blowing hot air after recharge?
The most common cause of an AC system blowing warm air is a lack of refrigerant, though, you may also have a problem with your condenser. Other possibilities include a faulty compressor, broken cooling fans, or an issue in your electrical system.
Will too much freon cause AC to freeze up?
No. It would actually raise the head pressure, which in turn raises the suction pressure, and the suction pressure is what will cause the unit’s evaporator coil’s temperature to drop below freezing.
Does freon work immediately?
Normally, freon takes a 15 to 30 minutes to settle in an air conditioner. But as a good rule of thumb it is better to wait for the maximum time to make sure “just in case.”
How long does freon last in a car?
So, how long does an AC recharge last? Your air conditioning is not something that runs constantly, so unless you live in a very hot climate, you can usually expect a recharge to last at least three years.
Why is my car AC not cold after recharge?
Numerous reasons can cause the compressor to not to connect with the vehicle AC. It could be an electrical failure in the circuit during charging, overheating vehicle, or maybe the coolant is just low. … So, make sure that you check the compressor as it could be the reason why car AC not blowing cold air after recharge.