A thermoelectric assembly comprising: a cold side and a hot side, where the boundary between the hot side and the cold side is generally defined by a plane; a heat sink on each of the hot side and the cold side, each heat sink comprising a heat sink base and a fin set disposed on the heat sink base, each fin set comprising a plurality of substantially parallel planar fins, the fins being aligned in a single exhaust direction that is parallel to the plane, the heat sinks meeting at their respective bases at the plane; a plurality of thermoelectric modules, the thermoelectric modules being arranged in at least one electrical circuit, with each thermoelectric module residing in the plane and being in thermal contact with the heat sinks of both the hot side and the cold side; and a fan and focusing structure on each of the hot side and cold side, each fan having an air intake direction, the focusing structure located between the fan and the heat sink on the respective hot side and cold side for focusing air from the fan into the fin set of the sink on the corresponding hot side and cold side; wherein the air intake direction of the fan on the cold side and the air intake direction of the fan on the hot side are substantially parallel opposing vectors; wherein the single hot side exhaust direction and the single cold side exhaust direction are opposing parallel vectors; characterised in that the heat sinks on the hot side and the cold side and the plane are sloped diagonally within the thermoelectric assembly such that the thermoelectric assembly is mountable on a surface of an enclosure to be cooled to thereby separate an interior of the enclosure from an exterior of the enclosure whereby the exterior is the hot side and the interior is the cold side. a cold side and a hot side, where the boundary between the hot side and the cold side is generally defined by a plane; a heat sink on each of the hot side and the cold side, each heat sink comprising a heat sink base and a fin set disposed on the heat sink base, each fin set comprising a plurality of substantially parallel planar fins, the fins being aligned in a single exhaust direction that is parallel to the plane, the heat sinks meeting at their respective bases at the plane; a plurality of thermoelectric modules, the thermoelectric modules being arranged in at least one electrical circuit, with each thermoelectric module residing in the plane and being in thermal contact with the heat sinks of both the hot side and the cold side; and a fan and focusing structure on each of the hot side and cold side, each fan having an air intake direction, the focusing structure located between the fan and the heat sink on the respective hot side and cold side for focusing air from the fan into the fin set of the sink on the corresponding hot side and cold side; wherein the air intake direction of the fan on the cold side and the air intake direction of the fan on the hot side are substantially parallel opposing vectors; wherein the single hot side exhaust direction and the single cold side exhaust direction are opposing parallel vectors; characterised in that the heat sinks on the hot side and the cold side and the plane are sloped diagonally within the thermoelectric assembly such that the thermoelectric assembly is mountable on a surface of an enclosure to be cooled to thereby separate an interior of the enclosure from an exterior of the enclosure whereby the exterior is the hot side and the interior is the cold side.