Hi guys
this is my first post here hope to get some info/help
own a 04 Astra H with Z20LER
There is no cold air from the system for the first 2-3km of driving if i left my car parked overnight or when i drove it after work(8-12 hours of stoppage)

Other than that it is working fine.(once the cold air start coming in, it is working perfectly fine regardless of the number of time i start/stop the engine)

I've send it to agent to check,found no problem/leak. They service (drain, vacuum and recharge the gas) the air con since mine have not been serviced before. But i'm still having this problem

Can anyone tell me what's wrong
Thanks