When a Miele dryer starts needing multiple cycles to fully dry a normal load, it’s tempting to assume the machine is simply aging. In most cases, it’s a specific, fixable restriction, and one worth taking seriously.
Airflow Restriction Is the #1 Cause
A blocked lint trap or a clogged, crushed, or overly long exhaust vent is by far the most common reason drying performance drops. This isn’t just a performance issue — restricted airflow is one of the leading causes of dryer fires nationally.
What You Can Check Safely
Clean the lint trap before every load, and confirm the exterior vent flap opens freely and isn’t blocked by debris. On long or multi-bend vent runs, buildup can accumulate well before it’s visible from either end.
When It’s a Sensor, Not Airflow
If airflow checks out clear and drying is still inconsistent, the heat sensor that regulates temperature may be drifting or failing.
Don’t Wait on This One
Given the fire-risk factor, book a dryer inspection promptly rather than living with multi-cycle drying for months.