A roller grill includes a housing structure adapted to support the roller grill； a plurality of tubular heating surfaces mounted between a first end of the housing structure and a second end of the housing structure； a first side housing coupled to the first end of the housing structure； a second side housing coupled to the second end of the housing structure, at least one of the first side housing or the second housing including a pressurized plenum maintainable at a plenum air pressure that is greater than a tubular air pressure of an inner volume of the plurality of tubular heating surfaces； and a drive assembly at least partially enclosed in the first side housing or the second side housing, the drive assembly configured to rotatably drive the plurality of tubular heating surfaces.
