AC dose not work

[sayeedh]

there has been a constant issue with this car's AC that is when i use it on regular basis the AC stops working and then i refill the gas it lasts a month or so and the same refill

there is no leak according to the mechanic so what is it..

[lionkini]

There is guarnateed leak in your cooling system (HVAC) better show to good mechanic who can find out leak first and fix it and then top up gas next time.

One shud do the pressure test to compressor and lines by putting normal c02 to max pressure and watch the pressure gauge closely for any drop in next 10 mins. It will drop the pressure then that means there is leak for sure. Then they can check the leak with soap water and foam around compressor and all AC lines.

If still cant find it, ask your mechanic to check the evaporator it must be leaking then.