A heat-exchange type ventilation apparatus, comprising: a main body 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; an air supplying fan placed in the supply air path; an air discharging fan placed in the discharge air path; and a heat exchanger placed in the main body to allow heat exchange between air passing through the supply air path and air passing through the discharge air path, wherein the main body, which is a housing, comprises support recess portions (25a, 25b, 25c, 25d) formed therein to support the heat exchanger; the heat exchanger includes a heat exchange element, frame members and end face members, the heat exchange element comprising a plurality of partition members each having a sheet-like and polygonal shape, the partition members being stacked with spacing between the partition members, wherein the support recess portions (25a, 25b, 25c, 25d) are grooves that extend in the stacking direction of the partition members as placed in the housing; the air supplying fan and the air discharging fan are placed next to each other in the main body in a stacking direction of the partition members and abut on an edge of the heat exchanger, the edge extending in the stacking direction, a first support recess portion is formed in an abutting portion where the air supplying fan and the air discharging fan abut on the heat exchanger, characterized in that said first support recess portion includes protrusions (33, 43) extending in the stacking direction and being formed on the respective inner wall surfaces of the first support recess portion, wherein each of the frame members has an L-like shape in a section and faces two of the side surfaces of the heat exchange element that extend from the edges of the heat exchange element, wherein the surface of each frame member opposite the surface thereof that faces the heat exchange element has an outer protrusion formed thereon that extends in the stacking direction, wherein each frame member covers an edge of the heat exchange element, each edge extending in the stacking direction, wherein each frame member and a corresponding one of the outer protrusions is fitted in a corresponding one of the support recess portions (25a, 25b, 25c, 25d), and cushioning material, wherein the cushioning material is interposed between each of the support recess portions (25a, 25b, 25c, 25d) and the corresponding one of the frame members, and wherein the protrusions (33, 43) are in line contact with the cushioning material. a main body 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; an air supplying fan placed in the supply air path; an air discharging fan placed in the discharge air path; and a heat exchanger placed in the main body to allow heat exchange between air passing through the supply air path and air passing through the discharge air path, wherein the main body, which is a housing, comprises support recess portions (25a, 25b, 25c, 25d) formed therein to support the heat exchanger; the heat exchanger includes a heat exchange element, frame members and end face members, the heat exchange element comprising a plurality of partition members each having a sheet-like and polygonal shape, the partition members being stacked with spacing between the partition members, wherein the support recess portions (25a, 25b, 25c, 25d) are grooves that extend in the stacking direction of the partition members as placed in the housing; the air supplying fan and the air discharging fan are placed next to each other in the main body in a stacking direction of the partition members and abut on an edge of the heat exchanger, the edge extending in the stacking direction, a first support recess portion is formed in an abutting portion where the air supplying fan and the air discharging fan abut on the heat exchanger, characterized in that said first support recess portion includes protrusions (33, 43) extending in the stacking direction and being formed on the respective inner wall surfaces of the first support recess portion, wherein each of the frame members has an L-like shape in a section and faces two of the side surfaces of the heat exchange element that extend from the edges of the heat exchange element, wherein the surface of each frame member opposite the surface thereof that faces the heat exchange element has an outer protrusion formed thereon that extends in the stacking direction, wherein each frame member covers an edge of the heat exchange element, each edge extending in the stacking direction, wherein each frame member and a corresponding one of the outer protrusions is fitted in a corresponding one of the support recess portions (25a, 25b, 25c, 25d), and cushioning material, wherein the cushioning material is interposed between each of the support recess portions (25a, 25b, 25c, 25d) and the corresponding one of the frame members, and wherein the protrusions (33, 43) are in line contact with the cushioning material.