Dryer Vent Cleaning in Parkville, MO
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Step 1 of 3: Equipment
Cold vents make lint stick
Your dryer pushes out warm, damp air every time it runs. That air has to travel through a vent that sits in cold space, and on a night near 22 degrees the metal cools fast. The moisture in the exhaust hits those cold walls and the lint that's riding along with it sticks instead of blowing on out to the cap.
Layer by layer that lint narrows the vent. Airflow drops, drying takes longer, and the dryer works harder to push air through a smaller path. A vent that's mostly blocked traps heat in the line, and that's how vent fires start.
- 22°F
- the average winter night, and cold vents catch damp lint
- 7 months
- October through April, the vent stays cold
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NOAA nClimDiv, 1991–2020 normals
- How often should a dryer vent be cleaned?
- Once a year, more often if you dry a lot of loads or the vent run is long. Lint builds up inside the duct even when the lint trap is clean, and it narrows the path the air needs to escape through. If your dryer runs most days, check the outside vent hood between cleanings to make sure air is still moving freely.
- Can I clean my dryer vent myself?
- You can clean the first few feet from the back of the dryer, but most homes can't reach the whole run this way. The vent usually travels through a wall or ceiling before it reaches the outside hood, and a vacuum or brush from either end only gets so far in. A contractor uses rods and a brush built to travel the full length of the duct, and can check that the vent hood outside is opening and closing the way it should.
- 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, or a burning smell when it's running are the main ones. You might also notice less airflow coming from the outside vent hood when the dryer is on, or lint collecting around the hood itself. Any of these on their own is worth having looked at, since a blocked vent is a common cause of dryer fires.