Range-hood filters: wash the metal mesh, replace the charcoal when required
Metal grease filters may be handwashed or dishwasher-cleaned if the model permits. Standard charcoal odor filters are generally replaced rather than washed. Identify the filter before cleaning.
Bosch recommends soaking metal mesh grease filters in warm soapy water, cleaning them gently and drying them fully before refitting. Dishwasher compatibility is model-specific, while non-regenerable charcoal filters require replacement. Grease accumulation is a fire concern.