To improve the comfort of an indoor environment by increasing the amount of ion mist emitted into indoor air, in an air conditioner.

The air conditioner includes an indoor heat exchanger, an indoor fan for sending indoor air and an atomizer 40 having an electrostatic atomization part 42. The electrostatic atomization part 42 includes a water retaining member 24 for retaining atomization water and an atomization electrode 25 for emitting the atomization water to indoor air sent with the indoor fan as ion mist. The water retaining member 24 is formed of fiber aggregate comprising fiber including micropores.