Stars, how are you going to get the hose from your hot water faucet to the tank fill pipe -- do you have a little outside shower door, like I do? I can't figure out how I would do this trick without the outside shower door, other than rigging up a permanently-plumbed bypass valve.
Anyway, I have been fooling around with my new hose setup, hoping to do some cold weather camping. I was measuring the temp of the water in the fresh water tank before and after I added the hot water. Not surprisingly, the lower the water level in the fresh water tank, the greater the increase in temp.
So does that mean I should keep the tank half empty, in order to maximize the boost from the hot water? Or should I keep it full, in order to increase the "thermal mass" of the full tank? Probably the latter. And I will run the hot water into the tank in the early evening and just before bed (to bump up the temp), and at least once in the middle of the night, to try to keep the whole thing above freezing.
