20 Litre fireside hotwater service The simple yet ingenious Hillbilly campfire hot water service is a great way to provide all the hot water needs of the camp for dishwashing, showers and so on. Placed on the ground next to your campfire filled with cold water it takes little time to warm. As hot water is required simply pour cold water into the unit through the funnel on the lid, the cold water is directed to the base of the tank displacing an equal volume of hot water from the outlet spout at the top of the unit. Your water stays free of ash, the tank remains full at all times and is inherently stable.