The SUNFIRE 150 Radiant Heater is the ultimate portable heater providing 150,000 BTU’s of diesel-fired infrared radiant heat that can warm objects and people directly. It’s quiet and virtually odorless providing a better heating experience compared to traditional torpedo-style heaters. Although the SUNFIRE runs on diesel fuel, it has ultra-low carbon monoxide emissions that exceed OSHA standards. You will love using it for any of your indoor commercial or industrial applications, even for your garage, pole-barn, or warehouse. You finally have a better option to replace you're old and outdated torpedo-style heater that's extremely loud and emits a very strong odor. The SUNFIRE solves this problem for you. General applications include automotive, construction, warehouses, agriculture, outdoor events, shops, garages, and many other commercial and industrial heating needs. 120V power source required.(Venting is not required but always use in areas with sufficient ventilation. Not to be used for residential indoor household heating)