I have a Vauhall Zafira. which I bought second hand last year, I am having problems clearing the windscreen.When putting the blowers on to clear the screen it takes a good 20 mins, also when the blowers are on and engine as been running for a while the heater does not get hot enough to clear the screen could you tell me why

Mr R K Storer, January 2010

have you tried checking the pollen filter for the cabin this can get blocked restricting the airflow.

shawn, January 2010

If the interior of the passenger compartment has a high humidity the windows will mist up more than a low humidity.

You may consider leaving a small gap at the top of the windows whenever you can to let natural ventilation clear away the damp atmosphere - you do not need to see the moisture - it will be in the seats and the carpet.

If you are able - park it up with all the doors left open for a couple of hours - wrap up warm and go for a spin with the windows open and the heater on full-blast but set to COLD.

You will still get a bit of misting now and again but no more than any car - but you must dry it out to get rid of the excessive misting - when you run the blower full blast open a window else you just move the moisture around inside the car - it needs to be let out.

Good luck...

Peccavi, January 2010