When a load that used to finish in one cycle now needs a second run, the instinct is to worry about the heating element. In practice, restricted airflow is by far the more common explanation, and it is also the easiest to check.
A dryer moves a surprising volume of air to carry moisture out of the drum; anything that narrows that path, even partially, shows up first as longer cycle times before it becomes anything more serious.
Work backward along the airflow path
Start with the lint screen — not just whether it looks empty, but whether a film of residue has built up on the mesh itself, which can restrict airflow even when it looks visually clear. Wash it periodically with warm, soapy water.
Reduce an overloaded drum, since clothes packed too tightly leave less room for air to circulate around them, and check the visible portion of the exterior vent hose for a sharp kink or crushed section behind the machine.
| Symptom | Likely cause | Safe check |
|---|---|---|
| Two cycles needed for one load | Lint restriction on screen | Clean and wash the lint screen |
| Clothes hotter than usual | Vent airflow restriction | Inspect the visible vent hose |
| No heat at all, cycle runs | Internal heating component | Stop use, book service |
When it stops being about airflow
If the lint screen, load size, and visible vent hose all check out and drying times are still long, or if the drum turns but produces no heat at all, that points toward an internal component rather than a restriction.
A burning smell at any point in this process overrides the rest of the checklist — stop the dryer immediately and do not attempt another cycle before it is inspected.
Safe to try
- Clean and periodically wash the lint screen
- Avoid overloading the drum
- Check the visible exterior vent hose and flap
Leave to a technician
- Operate the dryer with a disconnected or crushed vent
- Ignore a burning smell to finish a load
- Open the heating element housing
Airflow restrictions explain the large majority of dryers that suddenly take longer to finish a load. Work through the lint screen, load size, and visible vent path first, and bring in a technician if drying time stays long or heat disappears entirely.
Frequently asked questions
Yes — a thin film of residue from dryer sheets can build up on the mesh and restrict airflow even when no lint is visibly stuck to it.
A periodic check of the visible vent hose and exterior flap is worthwhile every few months, with a full professional cleaning roughly annually.
That points to an internal heating component rather than a restriction, and it's a job for a technician rather than further home checks.
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