Dryer runs but there is a musty or moldy odor on clothes after drying.

Safety first: Unplug the dryer before cleaning internal areas.

Step-by-step checks:

• Clean drum: Wipe the drum interior with a mixture of mild detergent and warm water. Run an empty cycle on high heat to dry.
• Vent cleaning: Remove and inspect the vent hose and wall duct for damp lint or mold. Clean or replace as needed.
• Lint filter: Wash the lint filter with warm soapy water to remove fabric softener residue, then dry completely.
• Usage habits: Avoid leaving wet clothes sitting in the drum for extended periods before drying.

Note: Persistent odors may require professional duct cleaning if the vent run is long or inaccessible.