Does anyone else have a really loud air con when on max particularly. The car is a mkII 2.0 vrs. I also noticed that their is hardly any air flow out of the

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No air flow from diver facing vents. Is this likely to be due to an old pollen filter?

Take it out, put the cover back on and see if it improves.

The center vents only blow to cool, (on Auto) unless you have on individual settings, (face) like Tech said check your filter