The invention relates to a hot-air furnace module having a furnace space, which is at least partially delimited by walls and is assigned an air-delivery device for producing an airstream and a heat-transfer device for heating the airstream. According to the invention, an incoming-air channel is provided, which is formed between the air-feed device and the furnace space for guiding the airstream delivered by the air-feed device and which is provided with first and second throttle means, which are arranged at a distance from one another in the direction of flow and are intended to even out the airstream before it flows through the furnace space. Furthermore, according to the invention a hot-air furnace is formed from hot-air furnace modules which are rotated through 180 degrees with respect to one another and are in communication with one another.
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