An oven (10) for a gas generating system (C) of the type that includes an interior chamber (22), heating elements (12), at least one gas generating module (14) mounted within the interior chamber (22), an air inlet (26) providing an input source of air, and a product gas outlet (16) includes an air amplifier member (2) that is mounted within the interior chamber (22). The air amplifier (20) generates an amplification of the air flow characteristics of the input source of air as the input air is introduced into the interior chamber (22) of the oven (10). The amplification promotes the oven air recirculation improving thermal uniformity and air distribution inside the oven (10).