Customer bought this camper and was having trouble with the water heater. Upon inspection, found that an outdoor propane water heater had been installed in the original compartment. This is super dangerous. These units were designed for outdoor use only. They have no way to vent the harmful fumes to the outside when mounted indoors. Carbon monoxide will build up in the camper and next thing you know you fall asleep and won't wake up. Don't ever mount one of these inside of a camper. If you have any questions about where and how to install a w/h, just give us a call. Advice is always free. Please be safe guys.