Last year during hunting season I had issues with my propane
heat and had to use my Honda 2K and a 1.5 cube heater for heat. With a heavy load you can only expect to get only 5-6 hours out of a tank of gas. That means at 0 dark:30 you have to get up and go outside and refill the generator
with gas. This year I plan to have a newer furnace
installed in my camper, but I will also have an external fuel tank for my honda.
One issue I had was keeping track of operating hours with this heavy use. I would definately install an hour meter if you plan on using an external gas tank. Also take along everything you need for changing oil in your generator
. With long winter nights it did not take long to rack up the hours on my generator.