I guess if I had a real complaint it would be there is no screen in front of the radiator. You got the one in the grill, but you will have to blow out the radiator when the unit starts to get warm instead of pull out a screen and tap it on the tire or something and go again.
It would slow down the process for sure but when dust gets bad enough the screen don't help much. Keep a paint brush with you and you can brush off the front if it gets matted up.