Abstract: An inline duct fan for an HVAC system including a body portion comprising a surface, a first side portion, and a second side portion. The inline duct fan includes the first side portion extending outward from the body portion, with the first side portion including a mounting tab defines one or more first mounting holes therethrough. The inline duct fan includes the second side portion positioned opposite the first side portion and extending outward from the body portion, with the second side portion defining one or more second mounting holes therethrough. The second side portion is configured to be mounted to either ductwork, where the second side portion extends at least partially within the ductwork, or an HVAC device via the one or more second mounting holes. The inline duct fan includes a fan assembly positioned at least partially within the first side portion of the housing.

Abstract: An inline duct fan for an HVAC system, where the inline duct fan includes a housing, and a fan assembly positioned within the housing. The fan assembly includes a fan blade and a fan motor. The inline duct fan further includes a controller communicably coupled to the fan assembly, where the controller is configured to operate the inline duct fan through a plurality of operating modes. The plurality of operating modes includes an idle mode in which the fan assembly passively rotates, and a dynamic mode in which the controller is configured to adjust a speed of the fan assembly based on airflow conditions through the inline duct fan, and where the inline duct fan transitions to the dynamic mode based on receiving a humidification command from an external controller.