I generally don't use the heater and wear enough gear to keep warm. If I use the heater, its to keep the wife warm when she rides in my car. If the windows want to fog up I use defrost, no fan, fresh air, and lower my door window an inch to provide flow.
My car stays in the garage which virtually eliminates ice on the windows. If I had to keep it outside, I'd probably get some kind of cover.
regards
mech
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