A heat-exchange type ventilation apparatus comprising: a box-shaped main body in which a discharge air path to discharge inside air to outdoors and a supply air path to supply outside air to indoors are formed; 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, the heat exchanger including a plurality of sheet-like and polygonal shaped partition members stacked with spacing therebetween in a direction orthogonal to a vertical direction of the main body, wherein the air supplying fan and the air discharging fan are placed next to each other in a stacking direction of the partition members in the main body and abut on one edge portion of the heat exchanger extending in the stacking direction, the air supplying fan and the air discharging fan have a groove extending in the stacking direction and sandwiching the one edge portion between two facing inner surfaces on a portion in which the air supplying fan and the air discharging fan abut on the heat exchanger, the air supplying fan and the air discharging fan include a casing (31, 41) capable of being split into two split casings (3a, 3b, 4a, 4b) in a vertical direction of the main body at the groove as a center, the two split casings (3a, 3b, 4a, 4b) including a first casing (3a, 4a) having an inlet portion (34, 44) formed therein and a second casing (3b, 4b) to be combined with the first casing (3a, 4a), characterized by a split casing (3a, 3b, 4a, 4b) that is included in the two split casings (3a, 3b) of the air supplying fan and the two split casings (4a, 4b) of the air discharging fan and is placed on an upper surface side of the main body includes a support extending from an area of the splitting plane inward of the groove to the one edge portion of the heat exchanger so as to be able to support the one edge portion from a bottom side of the main body. a box-shaped main body in which a discharge air path to discharge inside air to outdoors and a supply air path to supply outside air to indoors are formed; 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, the heat exchanger including a plurality of sheet-like and polygonal shaped partition members stacked with spacing therebetween in a direction orthogonal to a vertical direction of the main body, wherein the air supplying fan and the air discharging fan are placed next to each other in a stacking direction of the partition members in the main body and abut on one edge portion of the heat exchanger extending in the stacking direction, the air supplying fan and the air discharging fan have a groove extending in the stacking direction and sandwiching the one edge portion between two facing inner surfaces on a portion in which the air supplying fan and the air discharging fan abut on the heat exchanger, the air supplying fan and the air discharging fan include a casing (31, 41) capable of being split into two split casings (3a, 3b, 4a, 4b) in a vertical direction of the main body at the groove as a center, the two split casings (3a, 3b, 4a, 4b) including a first casing (3a, 4a) having an inlet portion (34, 44) formed therein and a second casing (3b, 4b) to be combined with the first casing (3a, 4a), characterized by a split casing (3a, 3b, 4a, 4b) that is included in the two split casings (3a, 3b) of the air supplying fan and the two split casings (4a, 4b) of the air discharging fan and is placed on an upper surface side of the main body includes a support extending from an area of the splitting plane inward of the groove to the one edge portion of the heat exchanger so as to be able to support the one edge portion from a bottom side of the main body.