Extractor hood (100, 100A) comprising a body (8), an inlet section (80), an electrical fan (V) suitable for extracting the hot steam (F) that rises from said cooktop (P) through the inlet section (80), and a grease filter (2) disposed in correspondence with the inlet section (80) or in intermediate position between the inlet section (80) and the electrical fan (V); the peculiarity of the extractor hood (100, 100A) is that it comprises an anti-condensation system provided with at least one radiation emitter (1) configured in such a way to emit electromagnetic radiation (IR) with a wavelength comprised between 0.74 µm and 2000 µm that irradiates and heats the grease filter (2) in such a way to prevent the formation of condensation in said grease filter (2).
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