An aerosol-generating device is provided, including an elongate housing having a first end, a second end, and a longitudinal axis extending between the first and the second ends; a cavity configured for insertion of an aerosol-generating article into the cavity along a first direction that is substantially perpendicular to the longitudinal axis; first and second apertures at first and second ends of the cavity and being configured for insertion and removal of the aerosol-generating article; an electrical power supply positioned within the elongate housing; at least one electrical heater, and a controller disposed within the elongate housing and configured to control a supply of electrical power from the electrical power supply to the at least one electrical heater when the aerosol-generating article is received within the cavity.