LG dryers taking too long to dry is one of the most common complaints and is almost always caused by restricted airflow rather than a defect in the dryer itself. The primary cause is a clogged or partially blocked vent system. LG dryers have sensitive duct blockage sensors that display d80, d90, or d95 error codes, meaning 80 to 95 percent of the vent is blocked. When airflow is restricted by lint buildup in the flexible foil duct, a long vent run over 25 feet, too many elbows, or an outdoor vent flap stuck closed, hot moist air cannot escape, so clothes stay damp and drying times can double to 90 to 120 minutes. Other causes include a dirty lint filter that was not cleaned before each load, lint packed inside the lint filter housing below the filter, an overloaded drum that prevents tumbling and air circulation, using the wrong cycle like Energy Saver or low heat for heavy towels, or a failed heating element that only produces partial heat. LG high-efficiency models also intentionally use lower temperatures and longer times to save energy and protect fabrics, which can feel slow compared to older hot dryers. To fix it, clean the lint filter, vacuum the housing, clean the full vent duct annually, ensure the duct is rigid metal, not foil, keep loads to 3/4 full, and use Sensor Dry with High heat for heavy items.
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