Tioga, Inc. manufactures, rents, and sells direct fired heaters and indirect fired air heaters as well as other accessories. Tioga began in Tioga, North Dakota in 1961. The original heater was designed to provide a livable climate on a drilling rig in some of the most severe weather conditions, where temperatures can drop to more than 50 degrees below zero. The Tioga heaters, are built to withstand the rigors of the construction, mining,oil, and pipeline industries Our direct and indirect fired heaters are able to be fueled by natural gas, propane, oil, electric or steam. They will provide heat in the range from 250,000 BTU/hr to 6,000,000 BTU/hr.