Hot water is one of the toughest creature comforts to give up. There are several points of issue that most would be homesteaders make. The most common gripes you hear from those considering the off grid lifestyle are power, bathroom and hot water. These are such comforts and it’s hard to forfeit them. Now, there are new and advanced off grid technologies that make it less of an issue. Still, one thing you may want in your life is the best hot water heater you can get.
Energy efficiency should be a concern as well. If not from the standpoint of protecting the planet than from the standpoint of saving money or maximizing your energy. This is a short but informative article about the possibilities of the hot water heater. While you may be surprised to see the cons I think you will understand once you read it.