An air treatment device (1) for the vaporization of an air freshening substance, the device comprising: a replaceable cartridge (2) comprising a reservoir (3), for containing the air freshening substance, and a wick (4), in fluid communication with the reservoir, having a top end (4a) and a bottom end (4b) defining a wick height； a heating means (5) for heating the wick (4) to a predetermined temperature to vaporize the air freshening substance； a heating means support (6) for retaining the heating means (5)； and a housing (7) enclosing at least the heating means (5) and heating means support (6) therein, and having at least one opening for allowing the vaporized air freshening substance to exit the air treatment device, whereby said heating means support (6) is arranged to displace in a direction perpendicular to said wick (4), upon actuation of an actuating means (9), such that the evaporation rate is varied.
