Dryer Vent Cleaning in Philadelphia, PA
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Step 1 of 3: Equipment
Cold vents are where lint sticks
Every load sends warm, damp air through the vent and out. Through the cold months, from October to April, that air cools fast once it hits the metal duct running through the unheated parts of the house. On a winter night averaging 27°F, 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, the vent narrows. Air backs up, the dryer runs longer to dry the same load, and the exhaust that should be leaving the house lingers in the duct instead.
- 27°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 is the general rule for most homes. Lint builds up inside the duct where you can't see it, even if you clean the lint trap every load. A contractor can look at the full run and tell you if your setup needs it more often, since duct length and the number of bends both affect how fast lint collects.
- Can I clean my dryer vent myself?
- You can clean the lint trap and the first few feet behind the dryer yourself. The rest of the run is harder to do right. Most vents bend through a wall or up through a roof, and lint sitting deep in those bends won't come out with a vacuum hose from either end. A contractor uses a brush and rod system built to reach the whole length and pull everything out.
- What are the signs of a clogged dryer vent?
- Clothes coming out hot but still damp after a full cycle is the clearest sign. The outside vent hood flap may barely move or stay shut while the dryer runs. The room can get noticeably warmer than usual, and you might find lint gathering around the hood outside or smell it burning. Any of these means air isn't moving through the duct the way it should, and the full run is worth having checked.