Ventilation/air-conditioning device

Disclosed is a ventilation/air-conditioning device for which assembly and maintenance are easy. Said device is provided with: a compressor (1) for compressing a refrigerant; a first heat-exchanger (3) that dissipates heat into air suctioned into the device; a second heat-exchanger (4) that absorbs heat from air suctioned into the device; and a circulating blower (2) for blowing, to the outside, the air into which heat has been dissipated. The compressor (1), the circulating blower (2), the first heat-exchanger (3), and the second heat-exchanger (4) are affixed to a base plate (5). The disclosed device is further provided with an exterior frame (7) which is removably affixed to the base plate (5) from above so as to contain the compressor (1), the circulating blower (2), the first heat-exchanger (3), and the second heat-exchanger (4).