The A/C wasn't working for the past 2 weeks. The throw of air at maximum control was negligible. I read on a forum here that replacing the cabin air filter would help. So i took it to the sevice center this morning.
The mechanic changed the filter and also suggested that i get the car spray washed. He suggested that i should get the car spray washed routinely to remove the dirt from all ducts,etc. I still don't agree whether it help or not but I got it done today, along with compound polish.
Here is pic of the location of cabin air filter, u can check how clogged it is urself if u find ur air conditioning inefficient. Remove the glovebox and look for it under the dashboard.
here's a pic of the clogged filter: