Hello I have 2006 Cayenne v6!
The problem is that when I switch on heater it doesnt produce enaugh air pressure! Air is hot and I can switch it cold too but theres no pressure! Theres only a little bit blowin out of dash air vents!

Is it cabin filter?
Is it coolant?

Or something else?

 

Are you sure that:
a) you are operating the control properly to force air out the vents you wants (as opposed to setting air to blow from those under the dash, at your feet)
b) that the systems making those selections are operating i.e., is air coming out anywhere? If not the fans are not working. If air is coming out somewhere but not where you set the controls then the vent valves are not working.

 

Air is flowing out but with very little pressure that I hardly can feel the flow! And air is flowing there where I set! Theres no pressure!

Did you mean in first point that theres some kind of valve under the steering wheel near pedals???