The Arcotherm FIRE Series is a duo of portable radiant heaters offering nominal heating outputs of 115,000 and 155,000 BTU’s. Radiant heaters are technically direct-fired units. They provide heat by creating a flame that heats up the front grille to a very high temperature which then radiates the heat outwards. This high heat barrier also help stop and burn all combustion residues, guaranteeing a clean combustion and 100% efficiency. Other benefits of radiant heaters include the fact that they do not produce any air movement, which also results in reduced noise levels. The FIRE Series heaters are great units for very large spaces, such as warehouses, industrial sheds, yards, open spaces and more, and in applications where it is critical to avoid stirring up dust and other particulates.