Powering with inverter not such a great idea
If it is cold enough to need your cab pre-heated, then it is cold enough to cut your batteries' power significantly. Producing heat, in any form, is a huge electrical drain.
You'll end up with a cold truck that won't start. Unless, of course, the engine is running to power the inverter, in which case the truck's own heater will warm the cab.
It's an old-fashioned idea, being prepared, but I drive for a living, though I spend as much time outside my truck dropping and hooking trailers, swinging doors, etc as I do in my truck, but simply dressing for the weather seems to be a reasonable way to stay warm.
I cannot get my teenage sons to understand that concept. Nor my office-worker wife. Personally, I have Artic Insulated coveralls that I wear every night. Zip-to-hip legs; easy on and off, with a heavy duty hood I can flip up. I wear extremely comfortable sweatshirts and sweatpants under them. The coveralls keep my clothes clean, too, since winter is a filthy thing when you spend your time around vehicles.
My boots are 1000 gram thinsulate and goretex Rocky Bearclaws with awesome traction soles. I even have slip-on ice cleats that I use a great deal.
I realize this is not appropriate garb for most folks, but such coveralls and boots take mere seconds to shed and don and work equally well over a 3-piece suit. And should you somehow end up alongside the road broke-down or helping someone else, you are prepared. I never cease to be amazed at how poorly-dressed even cops and ambulance workers are in this weather...
I keep my truck comfortably cool all night. I spend very little time indoors and always have the "I'm overheating" excuse to get out of the office, where most b. s. happens.
I can always take layers off, but you cannot add what you didn't bring. Cooling off is easy; staying warm takes some forethought and preparation and I sure don't want to be at the mercy of mechanical devices for life-sustaining warmth.
Just a thought... It doesn't work with my own kids, so I don't expect any better reception for it here...
