HelloCustomer the reason for the window to ice up on the inside is that the humidity level is very high in your car. There must be a water leak and you have the presence of wetness in the car. Your carpets might not feel wet, but the insulation under the carpet may be saturated. You may have water in the trunk, spare tire well, or side wells in the trunk. I've had this happen. Inspect and see if it is present. Then all depending where the wetness is, we can figure out where it's coming from.
Your JA Expert,