Quick Answer
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Common Symptoms
Possible Causes
Step-by-Step Diagnosis
Step 1
Unplug the dryer and pull it away from the wall.
Step 2
Visually inspect the entire length of the dryer vent hose/ductwork for kinks, crushes, tears, holes, and loose connections. Check both the connection at the dryer and at the wall/exterior vent hood.
Step 3
Feel the vent material for areas that are unusually hot during operation (if safely accessible and the dryer has been recently run), indicating a blockage or restricted airflow.
Step 4
Check the exterior vent hood for blockages (lint, bird nests, debris) and ensure the flap opens freely.
Step 5
Disconnect the vent hose from the dryer and the wall to check for significant lint buildup inside the hose and wall duct.
DIY vs Professional Costs
| Repair Type | DIY Cost | Professional Cost | Time Required |
|---|---|---|---|
Replace Flexible Transition Hose | $20 - $40 | $125 - $250 | < 1 hour |
Replace Rigid Duct (in accessible attic/crawlspace) | $50 - $150 | $300 - $600 | 2-4 hours |
Replace Exterior Vent Hood | $15 - $50 | $150 - $300 | 1-2 hours |
When to Call a Professional Dryer Vent
- If the damage is in rigid ductwork inside walls or ceilings that requires cutting into drywall for access.
- If you suspect a vent blockage within the permanent ductwork that DIY methods cannot reach.
- If you need to re-route or install a new vent run, especially through structural components or masonry.
- If your dryer vent is excessively long (over 25 feet) or has many bends, which can be complex to maintain or replace efficiently.
- If you are uncomfortable working with appliances or in confined spaces like attics and crawlspaces.
Prevention Tips
- Clean the lint trap before every load of laundry.
- Inspect and clean the dryer vent hose and exterior vent hood at least once a year, or more frequently if you do a lot of laundry or have pets.
- Use rigid metal or semi-rigid aluminum ducting for the permanent vent run, as it resists crushing and lint buildup better than flexible foil or plastic.
- Ensure the flexible transition duct (from dryer to wall) is made of metal (foil or semi-rigid aluminum), as plastic/vinyl is a fire hazard.
- Keep the vent path as short and straight as possible, minimizing bends and turns.
- Ensure connections are secure with metal clamps, not duct tape or screws that can snag lint.
Frequently Asked Questions
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