A heat-exchange type ventilation apparatus, comprising: a housing in which a supply air path and a discharge air path are formed, the supply air path comprising an exterior inlet portion to admit outside air and an interior outlet portion to discharge the outside air, the discharge air path comprising an interior inlet portion to admit inside air and an exterior outlet portion to discharge the inside air; a heat exchanger comprising a plurality of partition members each having a sheet-like and polygonal shape to allow heat exchange between air passing through the supply air path and air passing through the discharge air path, the partition members being stacked with spacing between the partition members; an air supplying fan placed in the supply air path on one side of the heat exchanger; an air discharging fan placed in the discharge air path on the one side of the heat exchanger, wherein the air supplying fan and the air discharging fan are placed next to each other in a stacking direction of the partition members such that inlet ports (3a, 4a) are oriented in opposite directions to each other and outlet ports (3b, 4b) are oriented in an identical direction; characterized in the ventilation apparatus furthermore comprising: a supply air filter placed upstream of the heat exchanger in the supply air path; and a discharge air filter placed upstream of the heat exchanger in the discharge air path, wherein facing surfaces (5b, 6b) of the supply air filter and the discharge air filter each have a frame protrusion (5c, 6c) extending in the stacking direction of the partition members, the facing surfaces (5b, 6b) facing the housing, and the housing has recess portions (13a, 13b) that the frame protrusions (5c, 6c) are fitted in; and wherein the supply air filter and the discharge air filter each have a sealing surface (5d, 6d) facing a side plate of the housing, the side plate being perpendicular to the stacking direction and being opposite a side plate, a surface of the sealing surface (5d, 6d) has a grip (5f, 6f), the surface facing the side plate, and an opposite surface of the sealing surface (5d, 6d) has a protrusion (5e, 6e), the opposite surface being opposite the surface facing the side plate, wherein the side plate has an opening and an opening, which are used as ports to admit air into the discharge air path, wherein the opening is connected upstream of the heat exchanger and the opening is connected downstream of the heat exchanger. a housing in which a supply air path and a discharge air path are formed, the supply air path comprising an exterior inlet portion to admit outside air and an interior outlet portion to discharge the outside air, the discharge air path comprising an interior inlet portion to admit inside air and an exterior outlet portion to discharge the inside air; a heat exchanger comprising a plurality of partition members each having a sheet-like and polygonal shape to allow heat exchange between air passing through the supply air path and air passing through the discharge air path, the partition members being stacked with spacing between the partition members; an air supplying fan placed in the supply air path on one side of the heat exchanger; an air discharging fan placed in the discharge air path on the one side of the heat exchanger, wherein the air supplying fan and the air discharging fan are placed next to each other in a stacking direction of the partition members such that inlet ports (3a, 4a) are oriented in opposite directions to each other and outlet ports (3b, 4b) are oriented in an identical direction; characterized in the ventilation apparatus furthermore comprising: a supply air filter placed upstream of the heat exchanger in the supply air path; and a discharge air filter placed upstream of the heat exchanger in the discharge air path, wherein a supply air filter placed upstream of the heat exchanger in the supply air path; and a discharge air filter placed upstream of the heat exchanger in the discharge air path, wherein facing surfaces (5b, 6b) of the supply air filter and the discharge air filter each have a frame protrusion (5c, 6c) extending in the stacking direction of the partition members, the facing surfaces (5b, 6b) facing the housing, and the housing has recess portions (13a, 13b) that the frame protrusions (5c, 6c) are fitted in; and wherein the supply air filter and the discharge air filter each have a sealing surface (5d, 6d) facing a side plate of the housing, the side plate being perpendicular to the stacking direction and being opposite a side plate, a surface of the sealing surface (5d, 6d) has a grip (5f, 6f), the surface facing the side plate, and an opposite surface of the sealing surface (5d, 6d) has a protrusion (5e, 6e), the opposite surface being opposite the surface facing the side plate, wherein the side plate has an opening and an opening, which are used as ports to admit air into the discharge air path, wherein the opening is connected upstream of the heat exchanger and the opening is connected downstream of the heat exchanger.