The Dyna-Glo Delux 140,000-180,000 BTU Portable Kerosene Forced Air Heater is ideal for outdoor/indoor construction, as well as industrial & commercial applications, making it an excellent choice for your portable heating needs. It requires little to no assembly, is 98% fuel efficient, and covers areas up to 4,200 sq. ft . with Two heat settings at 140K BTUs and 180K BTUs for two heaters in one. Included are self-diagnostics, a thermostat, an LED readout, and cord wrap. All Dyna-Glo Delux Kerosene Forced Air Heaters are CSA certified for multi-fuel use with these fuel types: K1 Kerosene, Diesel #1, Diesel #2, Fuel Oil #1, Fuel Oil #2, Jet A, and JP-8. However, K1 Kerosene is the manufacturer’s recommended fuel for optimal, cleaner burns and long-lasting product life. Dual Heat Technology Comfort Control Thermostat Built-in Digital Diagnostics Built-in Air Pressure Gauge Run Time Fuel Gauge Dual Source Power Cord 10" Flat-free Wheels Front & Rear Lift Handles & Cord Wrap Flameout Sensor Sturdy, Rugged Construction