Troubleshooting How do I clean the outside and the inside of my Philips Airfryer? Clean the outside of your Philips Airfryer with a moist cloth. The inside can be cleaned with hot water and a soft sponge. Please see video. Removing food residue: If necessary, food residues stuck to the heating element can be removed with a soft to medium bristle brush. Do not use a steel wire brush or a hard bristle brush, as this might damage the coating on the heating element.