The air heaters of the KE series allow the use of any type of biomass scaled to 50mm (wood chips, pine bark, olive stone, crushed pine cone, pellets, sawdust, etc.). The robustness, reliability and great durability of these equipments allow its use in harsh environments. The combustion chamber with large dimensions allows large periods of operation without cleaning the ashes. They are used for heating poultry farms, floriculture and horticulture greenhouses, wood drying ovens, commercial spaces, etc.