Dryer not drying? Before you call the repairman, check your ventilation. Lint can collect at various places on the path from your lint screen in your dryer to the dryer vent on the outside of your home. It often collects right at the dryer vent, and simply cleaning the vent will allow your dryer to work properly again and work more efficiently. Lint is also a fire hazard, so keeping your dryer vent line clean will decrease your risk for fire starting there.