Clean both ends of the vent
- Check your model's vent-care directions, then unplug the dryer. Clean the reachable dryer outlet, connecting hose and outside opening with a dryer brush and vacuum.
- If moving a gas dryer requires disconnecting its gas line, have a qualified professional handle that work.
- Secure the vent connections, run the dryer empty for 10 to 15 minutes, then check that the outside flap opens and airflow is strong.
- For a long, roof or otherwise inaccessible duct, arrange a professional cleaning of the full run.
A clear lint screen doesn't clear the exhaust hose or the duct leading outside. If loads are taking longer to dry, we'd check that path next because lint there can restrict airflow. Moisture or lint collecting indoors can be another sign of a clogged vent.
Find both ends before you move the dryer. You can clean a reachable hose and outside opening yourself, while a duct you can't reach through needs a different plan.
Find the outlet and gather your tools
The exhaust hose leaves the back of a vented dryer and leads to an outlet outside, usually on the siding or roof. The removable lint screen near the dryer door is a separate part.
Have a brush to loosen lint and a vacuum hose to collect it. Check whether the hose connections use clamps or tape before you start.
- A dryer-cleaning brush or similar-sized cleaning brush.
- A vacuum with a hose attachment.
- A screwdriver if the vent clamps need one.
Turn off power before moving the dryer
Unplug the dryer before removing any vent connection. That prevents it from starting while the hose is off.
If the dryer won't move without disturbing the gas line, leave it in place and use the accessible-outlet route below while you arrange help for the interior side.
Clean a vent you can reach from both ends
Use these steps when the dryer can be moved and you can reach its hose and outdoor outlet. A second person should help with the move.
- With your helper, move the unplugged dryer about one foot from the wall. Once you can reach the hose without pulling on it, inspect its connections.
- Unscrew the clamps or remove the attaching tape, then detach the hose from the dryer and wall. With both openings exposed, take out large pieces of lint by hand.
- Gently brush the dryer outlet, the detached hose from both ends, and the reachable wall duct from its indoor opening, following reachable turns. Vacuum up the loosened lint and debris in crevices. When those openings are clear, go to the outdoor outlet.
- Remove or open the outdoor cover. Pull out large clumps, brush the reachable duct and vacuum away the remaining debris. Replace the cover once the opening is clear.
- Clean up remaining lint around the appliance. Reattach the hose between the dryer and wall. Secure each connection with its clamp or tape and check that the hose stays attached before moving the dryer back.
- Have the qualified professional reconnect and check any disconnected gas supply while the connection remains accessible. With your helper, gently slide the dryer back. Restore power only after the connections are secure. Run the drum empty for 10 to 15 minutes, then check the outdoor outlet.
Your setup changes what you can reach
The steps above cover a reachable connecting hose and outlet. Use the route that fits the rest of your exhaust path.
| Your setup | Next move |
|---|---|
| Accessible wall outlet | Clean from the dryer and outside as described above, then check the outdoor flap and airflow. |
| Dryer cannot move | Clean what you can reach from the outside wall. Arrange professional access to the interior side so the full path gets cleaned. |
| Long duct or roof outlet you cannot reach | Have a vent-cleaning professional inspect and clear the full duct. |
| Gas dryer that needs its supply line disconnected | Leave the dryer in place until a qualified professional handles the gas line and move. |
| Ventless dryer | There is no outdoor exhaust vent to clean. Follow your model's filter and condenser care instructions instead. |
For more on the duct beyond the connecting hose, use our guide to clean a dryer duct. On a ventless Bosch dryer with a removable condenser, check its condenser cleaning steps (opens in a new tab) before taking that part out.
Check the outside airflow
While the empty cycle runs, look at the outdoor vent. Its cover should open, with strong airflow at the outlet. If the cover stays shut or airflow is weak, turn the dryer off and arrange an inspection of the duct.
Stop using the dryer if a severe blockage alert remains. If airflow is clear but slow drying or excess heat continues, contact appliance service. Tell the technician where the outdoor outlet is, whether the dryer can move, and which symptoms or alerts remain.
Ask whether a vent-cleaning quote covers the full duct, its connections, the outdoor outlet and an airflow check. If cleaning doesn't resolve a problem with the vent, installing a new dryer vent is an option.
Questions that come up after cleaning
How often should I clean the vent?
Clean the vent and ductwork at least once every two years unless your model's instructions give a different schedule. Do it sooner if drying slows or the vent becomes clogged.
Can I use a vacuum without a brush?
A vacuum hose collects loose lint, especially in crevices. Use a dryer-cleaning brush or similar-sized brush to loosen lint inside the reachable hose and duct first.
Do I need to wash the lint screen?
Remove lint by hand after every load. For a deeper clean, wash the screen with hot water, liquid detergent and a nylon brush, then dry it thoroughly before putting it back.
What if a blockage warning stays on?
Check the reachable vent and outside airflow. If the warning remains after the exhaust path is cleared, arrange service. A severe restriction alert means stop using the dryer until the exhaust system has been cleaned and repaired.
What should I tell a vent-cleaning professional?
Describe the outlet location, whether the dryer can move, and any slow drying, unusual heat, charred smell or blockage alert. Ask them to check the full duct and airflow.
Keep the screen clear between vent cleanings
After every load, pull out the lint screen, lift the lint off by hand and put the screen back. Routine lint removal works best while the lint is dry. Lint buildup can also pose a fire hazard.
If residue builds up on the mesh, wash the screen with hot water, liquid detergent and a nylon brush. Rinse it and let it dry thoroughly before the next load.
More in this category