Just wanted to give this thread a bump now that the mercury has dropped again.
We had a
Frostheater installed in our diesel Jetta about a week ago and this weekend/this morning was the first real test of it during that time. It passed with flying colours, I'm pretty dang impressed.
It produces enough heat that there are areas of the hood that the snow won't accumulate while it's plugged in. A mechanic buddy of mine did the install for a bottle of rye, so I can't speak to the cost of having it installed, but it was pretty straight forward, bolt the unit onto the bottom of the battery tray, remove one collant hose and replace with the FrostHeater unit & the two hoses. Yes there's coolant involved, but took my buddy about 45 minutes start to finish with his full shop tools.
Like I said it's working great, car starts no problem, and you can get almost instant heat into the cab because the engine's already warm. Always a plus.