An image heating apparatus includes first and second rotatable members configured to form a nip for heating a toner image on a sheet, a compressor, an air nozzle configured to blow air, generated by the compressor, on the first rotatable member, and a supplying mechanism configured to supply the air from the compressor to the air nozzle, the supplying mechanism including a plurality of air tubes and a plurality of clamps for clamping the air tubes at a plurality of different clamping positions. The plurality of clamping portions includes a predetermined clamping portion capable of being unclamped by a predetermined internal pressure lower by 20% or more than an internal pressure by which any other clamping portion, of the plurality of clamping portions, is unclamped.