Effectivness of A/C

[ferrytrip1]

May be a subjective question, but how good should the 02 986 base A/C be?

I have had mine recharged twice in last 10 moths and its getting bad again. I do see all the bits of foam coming from the vents. What does this foam do? I have read that once this is ruined that there is nothing to separate the cool and hot air mix - could somebody explain that plse.

The last refill my tech used dye, so I will take it back in for him to look at - fearing the worst that it may be the evaporator (Meir's post is excellent, but too much for me and my limited tool set - all my tools are in storage in UK....). I was out for an hour or so today and thought to look underneath - no condensate dripping or pools under the car.

Sorry for the rambling - just really looking for thoughts what to do next. It will get hot here in next 2mth so want to be ready. Back to the first question - is the 02 base a/c good if operating correctly?

Thanks

Simon