Provided is an air conditioner wherein corrosion of contact parts is minimized. Said air conditioner is provided with discharge parts and contact parts. Said discharge parts include discharge electrodes and opposing electrodes. The contact parts supply a voltage to the discharge parts. Contact-part-containing spaces (S2, S3) that contain the contact parts and discharge-part-containing spaces that contain the discharge parts are disposed within an air current. Said air current flows from the contact-part-containing spaces (S2, S3) towards the discharge-part-containing spaces.