We have completely gutted our camper. I am petrified of gas so everything will be electric or battery. The only water we are putting back in is the kitchen sink. Originally we had decided that we would just heat up water to wash dishes but then I saw a 4 gallon insta hot water heater at home depot that fits in our budget. I liked the fact the when it is not in use it can be drained. I was wondering has any one else done this? if so what are you thoughts. Still would like to hear peoples thoughts even if you haven't done it.