I really like SmKettner's idea -- hook up to the faucet and run an ordinary hose into the fill pipe! The only trick is how to get the hose from the faucet inside the trailer into the fill pipe, which is outside.
Hmmm. I have a connection for an outside shower, which I do not use (and have disconnected). I wonder if I could use that as the source of the hot water, since the source is already outside?? I could simply run a hose from the outside shower faucet to the water fill pipe -- very simple.
But that would probably mean that I would have to go outside just around bedtime to turn on the hot water, and then go back out there to turn it off a few minutes later. In 15 degree weather. Possible, but not wonderful.
So back to the idea of running a pipe from the faucet to the fill pipe -- I guess the tee into the fill pipe would have to be inside the trailer.
Keep those ideas coming!!
