Why are my clothes not drying properly or taking too long to dry?

Several issues can cause poor drying performance, including a clogged lint screen, a blocked exhaust vent, using the Energy Saver option, or an overfilled dryer drum. Check that the exhaust vent uses 4" (102 mm) diameter heavy rigid material, has no more than four 90° elbows, and is not too long. Also ensure the dryer is level so clothes contact the moisture sensors during Sensor Cycles. (Page 15-16)