Washer-dryer combo takes excessively long to dry clothes or never fully dries them.

Safety first: Unplug the unit before cleaning internal components or testing the heater.

Step-by-step checks:

• 1. Clean lint filter thoroughly: Remove and wash the lint filter with warm water if coated. Dry completely before reinstalling.
• 2. Inspect and clean external venting: Ensure the vent hood is clear and the duct is not crushed or excessively long. Clean lint from the entire vent path.
• 3. Clean internal ducts and blower: Access the blower housing and internal ducts and remove all lint buildup.
• 4. Check dryer heater operation: Run a timed dry cycle and feel for warm air at the exhaust after several minutes. If air is cool, test the heater and thermostats as described in heater-related faults.
• 5. Clean moisture sensor bars: Wipe the sensor bars inside the drum with vinegar or mild detergent to remove residue that can affect sensing.

When to call a technician: If airflow and sensors are good but drying remains poor, the heater or control system may require professional service.