Heat Mate heater convection 22,300 BTU heater has a tank capacity of 1.9 gallon. Integral fuel tank. 3-way safety shutoff and special safety guards to prevent accidental contact burns. Easy-to-read fuel gauge. Includes manual siphon pump & 2 "D" cell batteries for automatic push-button ignition. Banned in the State of Massachusetts and if you live in the state of California or Wisconsin they are only to be used outside or in a well ventilated area such as a construction site. Replacement wick available.