As above - iv done 90% of the draining/cleaning part of the a/c system - blocked drain channels, drained water out the centre vents (to the rear blowers) (except the one under the fan intake - cant find the drain hole, will need to do it from underneath

but when the fan is on in my car the windows steam up.
Whats the best seting to have the fan on constantly?
The pollen filters were changed last year and seem clean/dry enough - would i be better changing them anyway?
Anything else i can do to dry out the a/c system?
Thx
Dave