To all of the contributors, and the original poster- change your pollen
filter, and ensure the cover is properly resecured with fresh silicone under
the lid where it seals against the windscreen.

Tim..

Hi,
I live in north Sweden and have a 2 litre, year ´00 Focus, and experience
some cold weather every year.
I'd say the vent system is more of a problem than the heater capacity
itself.
When directing the heat to the face outlets in the dashboard, the heat seems
to be aplenty, almost possible to heat a sauna, but, that way the windows
fog up since no air can be directed to the defrost vents at the same time.
(Many other cars have small cutouts in the flaps to the defrost ducts for
this.) When directing the heated air to the windscreen and feet, most of the
heat seems to be lost somewhere in the ducts under the dashboard!
Is it directed through any ducts of sheet metal exposed to outside air?
During winter I see few cars as fogged up as my Focus.
/per