Granta: I always leave the climate control system in auto these days. I used to run in econ mode (unless I needed cooling down), to save fuel etc. But a friend of mine, who is also a petrol head, said that running the system in auto and keeping the aircon gases flowing is better for the longevity of the system as a whole, outweighing the costs of the fuel expenditure.
Lee69: I've no idea. The aircon is not as cool as I would expect it to be (having regassed a car recently), so I theorise that it may be due to a leak in the system. Have you had an aircon filter replaced before? Is it not done during servicing? I ask because I had the car serviced a couple of weeks ago.