Please help. I have A/C that is not coming out of the vents hard. Blower motor and resistor are good. I've cleaned out the screen next to the blower motor. Blend doors work like they are supposed to. I am at a loss and looking for some help.

When first turning in is it normal and blows well and slowly gets weaker and weaker?

No, it is just not enough air coming out of the face vents. Air isn’t coming out of the defrost or the floor either. It just is weak and the motor changes speed like it is supposed to. I’m at a total loss.

If the fan is pushing air good you have foam seal problems or warped duct work.