A thermally conditioned vehicle seat

A thermo-electric device (34) is disposed in series with the HVAC module (28) for heating and cooling air T a from the HVAC module (28) for delivery to seat passages (24) of a seat assembly (22) . The thermoelectric device (34) includes a thermoelectric module (46), a heat exchanger (44) having cold (48) and hot (50) sides, ductwork (32) , a divider (42) that sends variable air flow to the cold (48) or hot (50) sides of the thermoelectric module (46), and thermal insulation (52) between the cold (48) and hot (50) sides downstream of the heat exchanger (44). The fan of the HVAC module (28) is the sole motivation for moving the conditioned air T a originating from the central HVAC module (28) through the thermoelectric device (34) and to the seat assembly (22).