07 Fusion SE. When I put the vent adjustment at level of 1, 2, and 3 and the temperature to the hotest, I could not feel much heat wind blowing out until I drove the car at speed above 45 miles/h. When I put the vent adjustment at level 4, the hot wind was very strong and noise was too big. Does this mean that the vent adjustment at level 1, 2, 3 does not work? or this is the way it is? I did not notice this last winter. Maybe this winter is too cold.