I had felt it with my 02 cuore ( which i sold to my friend 3 months ago) i never felt that how much our actions would hamper its functions. Had got it painted in november 13, in this season friend told me that its AC wasnt working, took it to the AC guy he told us that its condensor has leak and AC gas had vanished. Upon inspection we could see the tool marks (souvenir from denter) got it welded but it did not perform, AC guys suggested a new one which cost us 2800 Rs got it and cooling was bombastic, this sunday friend came to me and told that on idling cooling goes off. I took it to the AC guy again he inspected and told us that the compressor wasnt working on idling. That was because of RPM adjustment (when we turn ac on rpm increases) our car's RPM adjustment bolts were missing. Took it to the mechanic got it repaired by a lathe machine (its butterfly was also repaired) upon fitting everything is ok again.
My suggestion is to Check if its RPM increases when you turn your AC on or not, ideally there is a very slight decrease in cooling while idling. Had seen a guys who had installed a fan on condensor grill, he told me that the AC worked similar in idling or moving with that fan and the setup cost him about 2500 Rs.