A venting appliance for use with a cooking appliance including a cooktop with at least one cooking element disposed thereon, where the venting appliance may include: a housing configured to be positioned above the cooktop; a repositionable vent arm coupled to and extending below the housing; and a controller coupled to the repositionable vent arm and configured to determine that a first cooking element among at least one cooking elements is active, and in response thereto, automatically reposition the vent arm to be closer to the first cooking element.