Abstract: A compact and effective ventilator/drier assembly for heating the room to which it is installed has a case main body 1 divided into a primary zone 3A communicating with an air inlet port 2A, a tertiary zone 3C communicating with an air outlet port 2B and a secondary zone 3B disposed adjacent to the tertiary zone and the primary zone. Moist air A in a room 100 is forced to flow through the air inlet port, the primary zone, the secondary zone, the tertiary zone and the air outlet port and back into the room by a centrifugal type air blower 21 and moisture contained in the room air is adsorbed by a cylindrical rotary type moisture adsorbing device 31 arranged between the secondary zone and the tertiary zone as the air is made to come into contact with a moisture-removing portion 31A of the adsorbing device 31. Dried air B is moved to into the tertiary zone, where it is heated to produce heating air E, which is discharged from the air outlet port into the room.