LG Dryer Takes Too Long to Dry: How to Fix

Before you start#

• Tools: flashlight, a dryer-vent brush kit, rubbing alcohol, a microfiber cloth, and a multimeter for component tests.
• Safety: Unplug the dryer before any internal inspection.

Step by step#

1. Check the lint filter. Pull the slot filter and look for a lint load or an invisible coating from dryer sheets — hold it under water, which should pass straight through a clean mesh. Wash it with soap and water if it beads up, since a coated filter chokes airflow.
2. Check the exhaust vent. This is the number-one cause of long dry times. Pull the dryer out, disconnect the transition duct, and feel for strong warm airflow at the exhaust with the dryer briefly running; weak flow means a restricted internal or external vent. Clean the whole path, and note that a FlowSense reading of d80 or higher confirms vent restriction.
3. Clean the moisture sensor bars. The Sensor Dry bars inside the drum near the filter slot get coated with dryer-sheet residue, which makes the dryer read clothes as still wet and run on. Wipe both metal bars with rubbing alcohol until no residue transfers.
4. Right-size and sort the load. Overloading kills tumbling and airflow — a standard LG drum handles about 7-8 bath towels. Give heavy items room, and avoid mixing very heavy items like jeans with very light ones like t-shirts, which makes the sensor chase mixed readings and run long.
5. Confirm it is actually heating. If the vent is clear and the bars are clean but loads stay damp, run a high-heat timed cycle and feel the exhaust — it should be genuinely hot (about 150-180 degrees F on a conventional dryer, 120-140 degrees F on a heat pump). Only warm or cool means a heating fault to chase: thermal fuse, element, gas coils, or heat-pump condenser.
6. Test the cycling thermostat. It cycles the element to hold temperature; stuck open, the dryer heats weakly and dries forever. Meter it — it should show continuity when cool.
7. Heat-pump models: clean the condenser. LG Dual Inverter Heat Pump dryers run cooler (around 140 degrees F versus about 300 degrees F on a conventional dryer), so they are slower by design, and a clogged condenser filter makes it worse. Clean the condenser filter behind the lower front panel and check the coils for lint.

If it is still slow#

• Better but not normal: confirm the vent run meets LG's maximum length — long runs with many turns cut airflow even when clean.
• Sensor Dry stops early with damp clothes: the bars read a dry surface while thick areas hold water because airflow is too weak to carry moisture out — recheck the vent.
• Heat-pump dryer takes 90-plus minutes on big loads: that is normal for the lower operating temperature; heat-pump models trade speed for efficiency.

What "normal" dry time depends on#

Before chasing parts, it helps to know what a normal LG cycle should look like, because "too long" is relative. A standard cotton load on a conventional LG dryer runs roughly 40 to 60 minutes, but a heavy load of towels or bedding, a cold laundry room, or a long vent run all legitimately stretch that, and a heat-pump model runs longer still by design. Sensor Dry then adjusts the real time to the actual moisture it reads, so anything that fools the sensors or starves the airflow makes the cycle drag. That is why this guide works outward from the two things that account for most complaints — a restricted vent and residue-coated sensor bars — before touching the heating parts. Fix those first and most "takes forever to dry" cases resolve without any replacement at all.