The hot air generators Keima® have been designed and manufactured according to the most modern technological level and in compliance with the safety standards required. This air heat exchanger uses biomass as fuel, scaled to 5cm. It is used for heating large areas such as poultry farms, greenhouses, commercial spaces, cereal dryers, among others. The generator consists of a burner, the basis of combustion chamber, the combustion chamber, exchangers, the coating and ventilators.