you might use the heater more often, so why not make sure you have a carbon monoxide detector?
perhaps slightly higher chance of exposure to CO with use
also make sure the heater and defogger are working well.
also might put a blanket, waterproof matches in the cargo compartment in case you go down
always consider the chance that rain at the surface might work itself into the control paths and when go higher it might freeze...happened to me on a seneca