Poxy aircon bust already. Only lasted a month 
Need to inspect, thoughts? Compressor seals, condenser leak? 
Needs identifying where the leak is. Could be anywhere. Uv glasses and a lamp required if it had die in it.
But condenser is favourite culprit usually. Car cooling link on here somewhere if so. (Link in parts iirc)
Yeah got their details. It's not sounding right either, almost metalic whistling sound from centre vents. Which can be made to sound normal, putting to lo and back again. Climate reset still the same
So inspected it, not got the right tools but can't see anything clear like a big leak. Bottom of the condenser is intact, nothing falling down. Around the compressor looks ok, road but nothing green.
Some dye around HP valve, but could be from when they put it in.
New LP valve aswell, after its been gassed, remove dust caps and put some soapy water on them, also spray condenser with soapy water. Looking for bubbles.
I was advised NOT to use soapy water on the valves as it a) leaves a residue that can contaminate the system b) can cause rust (?) or other problems with the schrader valve. c) if just gassed then the soapy water can react with the refridgerant to exagerate a) & b).
The advice I was given was to pour a small amount of PAG fluid into the valve and to then watch for any bubbles rising through the PAG fluid.
I know nowt about air con systems .. this is just the advice given by the mobile fitter who came and sorted mine out. He even left me a small jar of PAG fluid in case I needed to check the valves at any time in the future.
I know nothing .......
Similar story with LPG leaks. Soapy water works, but causes corrosion.
Trouble is the leak spray that is supposed to replace soapy water doesn't really work in showing the bubbles.

Anyway. Any oil based fluid would show the bubbles but not cause corrosion. 3 in 1 oil perhaps.