My winter hot water system is the pot from the 8 gallon turkey fryer that I bought at Costco, for 99.00 dollars. It comes with a large colander. When there is snow I fill the colander with snow and drop it in to the partially filled pot and it instantly melts. It also stores heat from the stove. Whenever I need hot water, I dip it out with a small pan hanging nearby. The only drawback is it takes up most of the room on my stove. There is just enough room left to squeeze my backpacking pot in.
During the summer I use the propane burner that it comes with to heat my water.
