Aerotherm

Under a variety of names (hot-air generators, hot-air cannons or air heaters), this type of mobile heating system can be found in industrial buildings (warehouses, factories), livestock farms, horticultural facilities (greenhouses) and temporary structures (tents or construction sites) for events or public works.
With requirements for practicality and robustness in both civil and military applications, systems must be able to operate over a wide temperature range and in harsh environments.
However, they are also undergoing regulatory changes, as well as applications in areas requiring the use of low-carbon, more environmentally-friendly fuels.