The ALFI FireHotTub is a wood burning hot tub that does not need to be plugged in or connected to a drain. The tub is lightweight and portable and can be used anywhere, at any time. It allows you to enjoy a hot bath absolutely anywhere by using natural firewood to heat the water. The ALFI FireHotTub uses the laws of physics to circulate cold water through its advanced coiling system where it is heated by a wood burning fire. Water is pushed through the metal coils which surround a wire basket where the firewood is housed. The basket can be raised or lowered to adjust the temperature of the water. Tub requires a minimum of 130 gallons of water to start water circulation and can hold a maximum of 220 gallons.