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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.

Dryer Vent Cleaning in Chaska, MN

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Step 1 of 3: Equipment
A white hooded exhaust vent cap mounted on gray vinyl house siding.

Cold vents turn dryer lint into a wall of buildup

Winter nights in Chaska average 9°F, and your dryer vent runs straight into that cold. The exhaust leaves the dryer warm and damp, and the moment it hits the cold metal of the vent, it cools fast. That moisture beads up on the inside walls of the vent, and lint sticks to it instead of blowing through to the outside.

Layer by layer, that wet lint narrows the vent until air barely moves through it. A dryer that can't push air out takes longer to dry a load, and the heat it can't vent has nowhere to go but back into the duct.

9°F
the average winter night, and cold vents catch damp lint
8 months
October through May, the vent stays cold
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 November through March.

NOAA nClimDiv, 1991–2020 normals

How often should a dryer vent be cleaned?
Once a year is the standard rule for most households. If you're drying loads every day, check it sooner, since more use means more lint moving through the vent. A bird or squirrel nest in the outside hood is also reason to check it, whatever the calendar says.
Can I clean my dryer vent myself?
You can clean the lint trap and the first few feet of duct yourself, but most of the vent runs through the wall and out to a hood you can't reach with a vacuum. A full cleaning needs a brush and rod sized to the duct, run from both ends. If your vent run is long or has more than a turn or two, a contractor has the tools to clear the whole length.
What are the signs of a clogged dryer vent?
Clothes that take more than one cycle to dry, a dryer that runs hot to the touch, and a burning smell are the main ones. Lint collecting around the outside hood or the hood flap not opening when the dryer runs are signs too. Any of these means air isn't moving through the vent the way it should, and a clogged vent is a fire risk worth taking seriously.
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