Originally Posted by
ak-angler
How 'bout just using a heater in the cab? Plug it into a timer so it's not on all night. Wake up to a warm cab and thawed windows.
X2. They make ones specific to autos but the little ceramic cube ones work well. They have a t-stat, the housings don't get hot and they have tip over protection. We use them all the time up here in Canada.