Radiant heat – the KBE5L (2-step) produces infrared, radiant heat that evenly and directly penetrates the objects and bodies around it. Unaffected by air movement – since the KBE5L (2-step) solely utilizes infrared, radiant heat, it is unaffected by air movement, such as wind and drafts. Heat transfer - the KBE5L (2-step) generates infrared heat directly to the object without any air movement creating a dust free comfortable environment. Odorless – the KBE5L (2-step) is equipped with a state-of-the-art clean and complete combustion system that produces no odor and no smoke in operation, maximizing user comfort. Fuel-efficient – the KBE5L (2-step)'s state-of-the-art combustion chamber further enables virtually 100% fuel-to-energy conversion, optimizing fuel-efficiency. Portable – the KBE5L (2-step) equipped with wheels, virtually enabling users to move it any space in need of heat.