The Short Answer
A dryer that heats but leaves laundry damp has an airflow problem in almost every case: lint restricting the screen, the duct, or the outside hood, so humid air recirculates instead of escaping. Confirm heat is present, run the towel test below, clean the moisture sensor bars, and stop filling the drum past two-thirds. If the exhaust outside blows weak, the duct needs clearing before anything else matters.
It's Air, Not Heat
Drying is evaporation plus removal: warm air absorbs moisture from fabric, and the blower pushes that saturated air out of the house. Break the removal half and the heat becomes useless — the same soggy air loops through the drum, fabric temperature climbs, and the load exits an hour later hot, humid, and wet. This is why “it takes two cycles now” is nearly always a duct complaint wearing a dryer costume, and why the machine itself so often tests perfectly once the airflow path is cleared.
The Towel Test
Wash one large bath towel, wring it well, and run it alone on a timed high-heat cycle for twenty minutes. A healthy dryer hands back a fully dry towel. Damp corners mean restriction; a towel barely changed means serious blockage or genuine heat loss. While it runs, put a hand on the exhaust hood outdoors — the flow should push firmly against your palm and feel distinctly warm. This one experiment, costing nothing, separates “call about the vent” from “call about the machine” before you spend a dollar.
“Customers apologize for 'wasting our time' when the fix is lint — but lint is the repair, and clearing it is the win.”
Field note — The Technician Team
The Sensor Bars Trick
Inside the drum, just below the door or along the front lip, sit two slim metal strips — the moisture sensor. Dryer sheets and liquid softener lacquer them with an invisible film that reads as “dry,” convincing auto-sense cycles to quit on wet clothes. A cloth dampened with rubbing alcohol strips the film in under a minute. If loads finish properly on timed cycles but die early on automatic ones, this is your fault line — and it costs nothing to fix.
Load Math and Habits That Keep It Dry
Keep the drum under two-thirds full, shake each item loose from the washer's spin-cheese before it goes in, and separate heavy cotton from quick-dry synthetics — mixed loads finish when the slowest item does. Clear the lint screen every load, wash it with soap monthly (softener film blocks screens too), and put the duct on an annual schedule using our vent cleaning walkthrough. When the towel test fails and the vent is already clean, something deeper — blower wheel, felt seals, cycling thermostat — is stealing the airflow, and that is a job for our same-day dryer repair service.
Damp-Load Questions
Why are my clothes still damp after a full dryer cycle?
If the machine produces heat, damp results mean the moist air is not leaving — a restricted lint screen, duct, or exterior hood. If the air inside is cool, you have a heating failure instead, which is a different diagnosis with different parts. Feel the exhaust outside during a cycle: weak or cool flow convicts the vent.
Why does my auto-sensing dryer stop while clothes are wet?
Auto cycles end when the moisture sensor bars — two thin metal strips inside the drum — read "dry." Coated in fabric softener film, they misread damp fabric as finished and quit early. Wipe the bars with rubbing alcohol on a cloth; it takes one minute and revives the auto cycle more often than any part replacement.
Does overloading stop a dryer from drying?
Yes, decisively. Air must move between garments to carry moisture out; a drum packed past two-thirds full leaves nowhere for airflow, so the outer layer roasts while the core stays soaked. Two reasonable loads finish faster — and use less power — than one crammed marathon cycle.