A heating device includes a heating rotator, a pressing rotator, a heater inside the heating rotator, a fan, a housing, and a pair of shutters. The pressing rotator presses against the heating rotator to form a nip passing through a recording medium. The housing houses the heating rotator and the pressing rotator. The housing has a pair of openings each configured to allow airflow generated by the fan to pass through each of the pair of openings. The pair of shutters each slide in corresponding one of the pair of openings in a longitudinal direction of the corresponding opening. Each shutter slides between a position at which an outer end portion of the corresponding opening is opened in the longitudinal direction of the corresponding opening and a position at which an inner end portion of the corresponding opening is opened in the longitudinal directions of the corresponding opening.