My ac lines get cold but no air is going into the cab

First make sure that the system is full. Possible bad blend door actuator or stuck door. The control panel could be bad. The front orifice tube could be restricted. Check the low pressure ac line that goes into the the cab at the firewall. If it is cold then the heater air in mixing in with the ac air.

fogging up occurs when the water vapour ( Humidity) in the cab air hits the cold windows Remove the humidity by running the ac in conjunction with the heater . AC units to make the air feel cold by removing the humidity in the cab air allowing you to perspire more easily and you feel cooler. By running to two together ( climate control in some cars) the fog will quickly disappear.

Depends on the problem.
Is the compressor working when the engine is running ?
Is one ac line hot and the other cold ?
Have you checked to see if it is low on freon ?

There is a drain under the vehicle under where the ac lines go into the vehicle cab',look directly below the ac lines,it is hard to find but it is there ,use compressed air ,like a air compressor or air tank,with a blow gun and blow the drain out,if it unclogs the drain,it will pour out like a water fall,if this was at all helpful,please rate thank you.

does the fan blow air in the cab i know its not cold but it is air? does the air lines compressor sweat? it may be the air conditioning button in the car where turn ac on off is not sending signal to compressor to turn on compressor and check the air ducts make sure they routing the air correctly to the cab check to make sure a ac system is not over charged if it is over charged will not send out cold air use a tire gauge should be around 40 psi i believe but check with dealer make sure my psi is correct hope this helps if dont fix repost and think somemore ideas

sounds like you have a stuck temperature blend door uncertain whether yours is electric or vacuum controlled

Probaly low on freon

Sounds like a broken or cracked vacuum line under the hood.

It could cause the A/C problem but not the heater problem. You can determine if the compressor is bad with a set of A/C manifold gauges. If you don't have access to these, you can do a quick check on the compressor. Do this by feeling the two lines going to it when it is running, One line should be hot to the touch and the other should be cold. Both problems could be caused for a temp actuator or temp door problem.

The temp blend door is operated by a vacuum motor.At higher engine rpms the manifold vacuum decreases.Most manufactures incorporate a vacuum storage tank to compensate for this lose of vacuum.So it does sound like you have a vacuum leak to the ac control unit.There should be a vacuum line going through the firewall into the cab.Inspect this line for leaks.Good Luck!!!!