Well, I noticed this morning...45degrees, very low 20% humidity, that my windows were all fogging up as well on the rescue SRT. I had the heat on at the first red notch and had to switch to defrost and engage the compressor which cleared it up in no time. Feeling that this was temporary, I turned off the compressor when the fogging cleared, but it came right back. I will have to check out those drains under the wiper cowling I suppose, but if I remove that panel, I want to be prepared to change out the batteries on the skreem module while I am in there.