My girlfriend has a 2007 Edge that she got a few weeks back. When the blower motor is turned on high, the sound is about right (it sounds like it is turning fast and moving lots of air) but very little air comes from the vent. On high it is like most cars on low. I thought there might be some blockage, but I would think it would only make one or two vents blow less air, but all of them are equal. Anyone have a problem like this? Could it be a clogged cabin air filter? The air flow is low when the system is set to intake air from the outside or to recirculate and when temp is set to hot or cold. Thanks.