Dryer takes too long to dry; cycles run much longer than normal and clothes are still slightly damp.

Safety first: Unplug the dryer before cleaning internal passages.

Steps:

• Check vent length and condition: Ensure the vent run is as short and straight as possible. Remove and clean the vent hose and wall duct thoroughly.
• Clean lint filter housing: Vacuum deep inside the lint filter slot to remove hidden lint.
• Run timed dry test: Use a timed high-heat cycle with a normal load. If drying improves, the moisture sensor may be dirty or misreading.
• Clean moisture sensor bars: Wipe the sensor bars inside the drum with alcohol to restore accurate sensing.