Have a 2009 Grand Caravan, plenty of hot air from front defroster but it doesn't get the frost/fog from the bottom 5" and up the sides of the windshield. Same on the passenger and drivers side windows. Seems that the air is blowing more in your face than on the windshield.
Please help!

 

Please help what? Check for obstructions. Check to make sure the ducting is in the proper place. Simple things to check.