A dryer that used to dry a load in one cycle and now needs two is one of the most common laundry complaints — and one of the most misdiagnosed. It is easy to assume the machine is wearing out, but slow drying almost always traces back to airflow, not the appliance. This guide works through the causes in order, from the simple things to check first to the vent issues that are the usual culprit, and explains what slow drying is quietly costing you.
Why a Dryer Takes Too Long
A dryer dries clothes by moving air: it heats air, passes it through the tumbling load to pick up moisture, and expels that moist air so fresh air can take its place. Anything that restricts this airflow — at the lint screen, in the vent duct, or at the discharge — slows the whole process, because the moisture cannot leave the machine fast enough. The dryer then runs longer and hotter to compensate.
This is why slow drying is usually an airflow problem rather than a machine problem. The causes below are ordered from the simplest and most common to the more involved, so work through them in turn.
A Blocked Vent — the Usual Cause
The most common reason a dryer becomes slow is a vent duct restricted with lint. As lint accumulates along the duct, the dryer’s moist exhaust air cannot escape efficiently, so the moisture stays in the drum and the clothes take far longer to dry. A vent that has not been cleaned in a year or more is the prime suspect, especially with heavy winter use.
Check it by feeling the airflow at the external vent while the dryer runs — it should be strong and warm. Weak or no airflow means the duct is blocked and needs clearing. Clearing the vent usually restores normal drying times straight away. See our vent cleaning cost guide.
A Clogged Lint Screen
The simplest cause of all is a lint screen that has not been cleaned. The lint screen sits in the airflow path, and when it is coated with lint it restricts that airflow just like a blocked duct — slowing drying and making the dryer run hotter. This is why the screen should be cleaned after every single load, not occasionally.
If you have been letting the lint build up on the screen, clean it thoroughly and check whether drying improves. A screen clogged with fabric softener residue can also restrict airflow even when it looks clear — an occasional wash in warm soapy water removes this film. The lint screen is the first and easiest thing to rule out.
Overloading and Wet Loads
Two loading habits slow drying independently of the vent. Overloading the dryer packs the clothes too tightly for the air to circulate through them, so they dry slowly and unevenly — drying smaller loads is often faster overall. And putting in clothes that are still dripping or only lightly spun gives the dryer far more water to remove; a good spin cycle in the washing machine first removes much of the water mechanically and shortens the dry considerably.
If your slow drying coincides with big loads or barely-spun washing, adjust those habits before suspecting a fault. They are free to fix and surprisingly common contributors.
A Long or Poor Vent Run
Even when clean, a vent run that is too long, has too many bends, or uses ribbed flexible ducting restricts airflow and slows drying. This is common in Melbourne homes with internal laundries, where the duct has to travel a long way to reach the outside. A long, convoluted run also clogs with lint faster, compounding the problem.
If your dryer has always been a bit slow and the vent run is long or poorly configured, improving the ducting — shortening it, reducing bends, or switching to smooth rigid duct — can restore performance. Where a good vent path simply is not achievable, a heat pump dryer that needs no vent is often the better long-term answer. See our installation guide.
What Slow Drying Is Costing You
A dryer that takes two cycles instead of one is using about twice the electricity to dry the same load, and running for twice as long wears the machine faster. Across a Melbourne winter of frequent drying, that wasted energy adds up to a real amount on the power bill — money spent purely because the vent is restricted.
This is why fixing slow drying is worth doing promptly: a vent clean is inexpensive compared with months of doubled running costs, and it also removes the fire risk that a clogged vent brings. Restoring proper airflow makes the dryer faster, cheaper and safer at the same time. Call FreshDuct on 0431 918 137 to have a restricted vent cleared.