Why does my dryer take two cycles to dry?
Updated August 2026
When a normal load needs two full cycles to come out dry, the cause is almost always a lint-clogged vent that traps the moisture inside the drum. A healthy dryer finishes a medium load in about 40–50 minutes, and a restricted vent can push that past 90 minutes because the wet air has nowhere to go. Cleaning the whole duct run, not just the screen, restores the airflow and usually cuts the time in half. If a clean vent does not fix it, the causes below take over.
Safety first: a vent that doubles your drying time is the same restriction that ranks as the leading cause of dryer fires, so slow drying is a warning worth acting on. The trapped heat and packed lint are a real ignition risk. Clean the entire run, and if the outside of the dryer is hot to the touch or the laundry room smells scorched during a cycle, stop and clear the vent before running it again.
Causes, most likely first
| Cause | How likely | The fix | Typical cost |
|---|---|---|---|
| Clogged lint screen and vent duct | Most common | Vacuum the screen housing and clean the full duct from dryer to exterior hood. A restricted vent can roughly double the run time. | Free DIY, $100–200 pro |
| Overloaded drum | Common | Split oversized loads and fill the drum only half to three-quarters full so air can move through the clothes. | Free |
| Long, kinked, or crushed vent duct | Common | Shorten the run, straighten kinks behind the dryer, and replace ribbed foil hose with smooth rigid metal duct. | $20–100 |
| Fabric-softener film clogging the lint screen | Occasional | A screen that holds water instead of draining it is coated. Scrub it with warm soapy water and a soft brush. | Free |
| Fouled moisture-sensor bars (auto cycles) | Occasional | Dryer-sheet residue on the metal sensor strips fools the sensor into stopping early or running long. Wipe them with vinegar. | Free |
| Weak heating element or thermostat | Occasional | A partially failed element makes some heat but not enough. Test and replace it. | $40–100 part |
Check these first
- Clean the lint screen, then hold it under running water: if it beads up instead of draining through, softener film is choking airflow.
- Run the dryer and check the exterior vent hood. Weak airflow or a flap that barely opens means the duct is clogged.
- Pull the dryer out and look for a crushed or sharply kinked flex duct behind it.
- Cut the load in half and rerun it. If half a load dries normally, you were overloading.
- Wipe the moisture-sensor bars just inside the drum with a little vinegar to clear dryer-sheet residue.
Prevent it next time
Slow drying is a maintenance signal, not a machine getting old. A once-a-year vent cleaning, done more often in a busy household or with a long duct run, keeps loads finishing in that 40–50 minute window and keeps your energy use down. Follow the seasonal tasks in our dryer maintenance checklist, and resist packing the drum, since overloading your dryer both stretches every cycle and wears the machine out early.
When to call a pro
Bring in a pro when the vent run travels up through a wall or roof and you cannot reach it, when a clean vent still leaves loads damp (a heating fault), or when the duct behind the wall has come apart. Professional vent cleaning runs $100–200, and a heating-element or thermostat repair is $150–300. If the dryer is well past a decade old and now needs a heat repair on top of a vent service, compare the total against a new unit using our when-to-replace-a-dryer guide.
Most of the causes above are maintenance problems wearing a disguise. OnOtto keeps the boring prevention on schedule so the 2 a.m. version doesn't happen.
Stop chasing symptoms, free for 30 daysFrequently asked questions
How long should a dryer cycle normally take?
A medium mixed load should dry in about 40–50 minutes. Heavy items like towels, jeans, or bedding can reach 60–70 minutes on their own. If everyday loads routinely run past 90 minutes or need a second cycle, something is wrong, and a clogged vent is the first suspect. Timing also depends on the load size and how much water the washer spun out, so a washer that no longer spins fast will hand the dryer soaking clothes and stretch the cycle.
Can a clogged vent really double drying time?
Yes. Drying works by carrying moisture out of the drum with a stream of hot air, and a lint-packed duct chokes that stream. The wet air recirculates instead of leaving, so the same load takes far longer and the dryer works harder the whole time. A full duct can roughly double the cycle and spike your energy bill. It is also why slow drying and fire risk share one root cause: restricted airflow.
How often should I clean my dryer vent?
At least once a year for a typical household, and every six months if you dry many loads a week, own pets that shed, or have a long duct run with elbows. The lint screen gets cleaned after every load, but that catches only part of the lint; the rest packs the hidden duct over months. A yearly cleaning keeps drying fast and is the single best step for preventing dryer fires.
Why are my clothes still damp when the dryer feels hot?
Heat without airflow does not dry clothes, it just bakes moisture in place. If the cabinet feels hot but loads stay damp, the vent is almost certainly clogged, so the hot, wet air cannot escape. Overloading causes the same thing by packing the drum so air cannot pass through the fabric. Clean the vent and lighten the load before assuming the heating element is weak.