A white louvered dryer or exhaust vent screwed into dark navy horizontal lap siding, with a blurred sunset and silhouetted trees visible in the background.

Dryer Vent Cleaning in Juneau city and, AK

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A grey plastic exhaust vent mounted on dark blue vinyl house siding, with a blurred dusk sky and bare tree visible in the background.

Cold air turns dryer lint into a wall

Your dryer pushes warm, damp air out through the vent, but the vent itself sits in a space that stays cold most of the year. Winter nights here average 26°F, and that cold reaches into the vent run. When the warm air hits those cold walls, it cools fast, and the moisture in it turns to damp film on the metal. Lint does not just blow through after that. It sticks.

That buildup narrows the vent a little more each month. A dryer fighting a clogged vent takes longer to dry a load and runs hotter than it should, and the moisture that cannot escape has nowhere to go but back into the house.

Line illustration of a clothes dryer on a floor next to a wall, with a flexible duct connecting its exhaust to a wall vent hood.

Your vent runs coldest from October through April.

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NOAA 1991–2020 monthly normals

How often should a dryer vent be cleaned?: Once a year for most households. If the dryer runs almost every day, have it checked more often, since lint builds up along the whole length of the vent, not just in the trap. A year is usually long enough for that buildup to narrow the airway enough to matter.
Can I clean my dryer vent myself?: You can clean the trap and the first few feet yourself, but that is not the same as cleaning the vent. Most runs go through a wall and out to a hood outside, often with a bend or two along the way, and lint collects past where a household brush or vacuum can reach. A contractor uses a rod system built to travel the full length and clear it out.
What are the signs of a clogged dryer vent?: Clothes coming out hot to the touch but still damp is the clearest sign. Others include a load taking noticeably longer than it used to, the outside vent hood flap barely moving or not opening while the dryer runs, and a burning smell during the cycle. Lint gathering around the vent hood outside is worth checking too, since that means less air is making it out and more lint is settling inside the duct.

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