VEHICLE WASTE AIR RECAPTURE SYSTEM

A vehicle HVAC system including a blower positioned proximate a heat exchanger and configured to blow conditioned air into a passenger cabin. A waste air duct having a first open end positioned proximate another heat exchanger is configured to receive waste air that has passed through the heat exchanger. A waste air fan is positioned at a second open end of the waste air duct, and the waste air fan is configured to be rotated by the waste air passing through the waste air duct. An output shaft connected to the waste air fan is configured to be rotated by the waste air fan. The output shaft is connected to and configured to rotate the blower such that the blower may blow the conditioned air to the passenger cabin without being powered by a vehicle battery.