To provide a humidifying air-conditioning system capable of reducing a time and effort for operation before bathing.

The humidifying air-conditioning system 1A comprises a humidifying heater 2 for humidifying and heating a bathroom 100 having a bathtub 101, and a first water heater operating part 4a installed in a kitchen 110 to select the operation of supplying hot water into the bathtub by a water heater 3 to fill hot water. When the operation of filling hot water in the bathtub 101 is selected by the first water heater operating part 4a, the operation of humidifying and heating the bathroom 100 by the humidifying heater 2 is interlocked.