I also love my hot showers. The first thing I did was goto a propane shower device, this helped greatly.
The second thing I did was I Boiled about 2 1/2 gal of water with my rocket stove, then I poured this into a 5 gal bucket mixing in cold water for a good shower, then I used this device ->
Mine looks a bit different than this, but it does the job and works great for me. I like to have backup means to primary.
Past this I installed a direct line from my solar panels to my hot water heater, when my battery is full charging, the remaining power goes to the hot water heater…
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