Sounds like a number of issues including: -

• Blocked pollen filter or replacement filter not seating properly;
• Other water leaks into the car - check the floor under the fitted carpet. If it is wet, find the source of water ingress; or
• Have you left the heating controls on recirculating air rather than fresh air?

In orther words there is too much water in the car and it is not getting out fast enough.

it happens if you do lots of short journeys.

I put a big bag (2kg) of silica gel in a breathable bag in the car it it mostly soaks it up. I put the bag into the airing cupbard to dry out for the weekend when needed.

My Berlingo is a sod for this. No leaks I can find and it doesn't have a pollen filter or A.C.

I leave a fan heater in there and run it in the mornings, bit over-kill for condensation but it saves smearing the screen and is fantastic when the frost starts.

Edited by mss1tw on 27/01/2014 at 13:27

In the weather we are having you can't hope to keep a car dry inside for long. Just consider wet shoes (making wet footwells), wet clothing, umbrellas, anything else that gets in the car with you. The air-con may be the most effective way to get the screen clear.

Overnight most of the dampness in a car condenses inside the screen, which is half-horizontal, rather than on the more vertical side windows, which are marginally less cold.

Edited by Andrew-T on 27/01/2014 at 15:24