Dryer Vent Cleaning in Columbia, MD
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Cold vents catch lint that warm ones would carry outside
Every load of laundry pushes warm, damp air out through the vent. On a winter night around 26°F, that air cools fast once it hits the metal duct running through your attic or wall cavity. The moisture in it lands on the cold walls of the vent, and lint sticks to it instead of blowing on outside.
Over a season that runs from October to April, that buildup narrows the vent a little at a time. A duct that is choked with lint makes the dryer work harder to push air through, and it gives a spark somewhere in that lint a place to catch.
- 26°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?
- A contractor can tell you for sure once they see the length and shape of your duct run, but as a rule, check it at least once a year. If you run large loads often, or your duct run is long or has several bends, it is worth checking more than once a year. Lint builds up along the whole length of the duct, not just at the lint trap, so a vent that looks clear from inside the dryer can still be packed further down.
- Can I clean my dryer vent myself?
- You can clean the part you can reach, but that is usually not the whole job. Pulling the dryer out and vacuuming the first few feet of duct, plus clearing the outside vent hood, is worth doing and safe to do yourself. The rest of the run, especially if it bends or goes up through a wall or roof, needs a brush and rod pushed through from one end to the other, which is why most people call a contractor for the full cleaning.
- What are the signs of a clogged dryer vent?
- Clothes that take longer than one cycle to dry, a dryer that feels hot to the touch on the outside, and a burning smell when it runs are the main ones. Check the outside vent hood while the dryer is going. If you feel little or no airflow there, the duct is blocked somewhere between the dryer and the wall. Lint collecting around the lint trap door or the outside vent flap not opening on its own are also worth acting on.