u/Immediate_Bat_9005

Hi all,
Hoping you can help me out before I take my car into an auto body shop.
I drive a 2015 Nissan Versa (automatic) and in the past couple of years or so I’ve had a problem with the AC. It only blows cold air when the car is actually driving - if the car is on, but idling or otherwise stopped (like at a red light or stop sign) it blows hot air.
There are no problems at all with the heater.
Can I just fill the freon? Do the AC filters need to be changed?
Thanks.