Putting a larger vent on the end of a dryer hose shortens clothing drying time. Any change that improves the ability of the dryer to vent the hot, moist air shortens clothing drying time. Shortening the hose and enlarging the opening to the outside improves venting.
Dryer hose elbows, transitions and small vent hoods all impede air flow. Shortening and straightening the hose improves air flow. Replacing the typical flexible dryer hose with a rigid dryer hose is an easy way to reduce clothing drying time. Flexible dryer hoses have little ridges along the insides of the hose that block airflow and collect dryer lint.