Montana HVAC Pros
A white angular exhaust vent cover mounted with screws on gray vinyl house siding.

Dryer Vent Cleaning in Ennis, MT

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

Cold vents make lint stick

Winter nights in Ennis average 14°F, and your dryer vent runs through that cold most of the year. Warm, damp air leaves the dryer and hits the cold walls of the vent, and it cools fast. Lint that would blow straight through a warm vent sticks to those damp walls instead.

Over a winter that buildup narrows the vent. Less air moves through it, so more moisture stays in the line, and more lint catches on the way out. A vent that starts clear in the fall keeps losing ground until it is cleaned.

14°F
the average winter night, and cold vents catch damp lint
11 months
August through June, the vent stays cold
Isometric line illustration of a front-loading dryer with a flexible duct running from its top to a wall vent hood.
Your vent runs coldest from October through April.

NOAA nClimDiv, 1991–2020 normals

How often should a dryer vent be cleaned?
Once a year is the rule for most homes. Lint builds up gradually, and by the time you notice longer dry times the vent is already partway blocked. A contractor can tell you if your setup needs it more often once they've seen the vent run.
Can I clean my dryer vent myself?
You can clean the lint trap and the first few feet behind the dryer yourself. What you can't reach is the rest of the run through the wall or ceiling to the vent hood outside, especially if it bends or travels any real distance. A vacuum from the inside only pulls lint toward you, it doesn't pull it out of a duct that runs away from you, so most of the vent needs a brush and rod worked from both ends.
What are the signs of a clogged dryer vent?
Clothes that take two cycles to dry, a dryer that runs hot to the touch on top, and a burnt smell when it's running are the main signs. You might also see little lint pieces around the vent hood outside or notice the vent hood flap isn't moving much when the dryer runs. Any one of these on its own is worth checking, and if you notice more than one at a time, don't wait.
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