Where lint collects
In the door filter, the condenser or base filter depending on model, and sometimes inside the air duct itself.
After every cycle
Empty the door filter after every use. It's the single most important dryer habit.
Monthly
Wash filters with water and let them dry completely before refitting, and clean the condenser per your model's instructions.
Warning signs
Longer than usual cycles, a very hot cabinet, or a burning smell. Stop using it and request a check if you smell burning.
Frequently asked questions
Do I still need a technician after these tips?
If the problem continues after the safe steps above, it's best to request a technician's check.