Lint doesn't stop at the trap
- Start outside if you can reach the vent from the ground. Check that the flap opens and nothing's blocking it.
- Gas dryer? Stop before you move or disconnect it. Have a pro shut off and cap the gas line before you continue.
- Unplug the dryer, pull it about a foot from the wall with a helper, then brush and vacuum from the back of the dryer through the wall duct.
- Reconnect without crushing the duct. During the empty run, check that the outside flap opens fully and airflow is strong. If it isn't, the duct needs more attention before the next load.
You've been cleaning the lint screen after every load, yet loads still come out damp or take ages. The lint you can't see may be sitting in the duct that carries hot air outside.
We'd check the outside vent before moving the dryer at all, if you can reach it from the ground. A stuck flap or a screened cap can block airflow on its own, and you can spot either one without touching the machine.
| Your setup | What to do |
|---|---|
| Electric dryer, accessible outside vent | Check the outside opening, unplug the dryer, then clean the accessible duct from both ends. |
| Gas dryer | Have a professional shut off and cap the gas line before the dryer is moved or disconnected. |
| Roof vent or other elevated exit | Clean accessible sections from inside. Have a professional handle the outside end. |
| Dryer cannot be moved safely | Clean a ground-level outside opening if you can reach it, then arrange for the inside section to be cleaned. |
These steps are for vented dryers. Ventless dryers, also called condensing dryers, recirculate air through the drum and have no outside vent, so follow your model's manual for those instead.
Signs the vent needs cleaning
Lint and dust build up in the vent over time. That can block airflow, stretch out drying times and make the dryer overheat, and trapped lint is a serious fire hazard.
Cleaning it out can bring the airflow back, and keeping up with it can lower the fire risk. That's why a slow dryer is worth fixing instead of living with. Check which of these you've noticed:
- Clothes take longer to dry, or don't dry at all.
- Moisture or lint is collecting indoors.
- Clothes feel extra hot after drying.
- There's a slight charred smell with no obvious source.
Your dryer may also warn you directly. Many Maytag dryers show an error code when there's a vent problem, such as a "check vent" message.
We'd clean the full duct once a year. Whirlpool and Maytag give at least every two years as their vent-cleaning interval, with earlier cleaning when drying slows or the vent clogs. Follow a shorter interval if your owner's manual calls for one.
Check where the vent leaves your house
Find where the duct ends outside. It should vent to the outdoors, not into the attic or crawlspace. You'll typically find it on the siding or the roof.
If yours exits on the roof or anywhere you'd have to climb to reach, check and clean from inside only and leave checking and cleaning the outside end to a pro.
At an opening you can reach from the ground, make sure nothing's blocking it and that the flap opens. A single flap or a louvered cap is fine. A cap with a screen over it isn't, because the screen can clog with lint and stop airflow. You can compare vent caps in these photos (opens in a new tab).
Leave the cover on for now. You'll take it off when you clean that end, and put it back as soon as you're done.
Unplug it and pull it away from the wall
Check your model's user manual first in case it has its own steps. Then unplug the dryer, so it can't start while the vent is disconnected.
Call a dryer service professional if you have any questions about gas or electric maintenance. If you own a Maytag, its dryer vent cleaning page (opens in a new tab) links to the brand's appliance service options.
With a helper, carefully move the dryer about a foot away from the wall. That gives you room to reach the back and clear debris, and the second person keeps both you and the dryer safe.
Call a dryer service professional if you can't move the dryer safely even with help.
If you need to lay the dryer down to reach the vent comfortably, put a blanket or towel on the floor in front of it first so the dryer doesn't get damaged.
Now detach the vent from the back of the dryer and from the wall. Depending on how it's attached, loosen the hose clamps with a screwdriver or peel off the tape.
A brush and vacuum do different jobs
Get a dryer vent cleaning brush or kit and a vacuum with a hose ready before you start. The brush loosens buildup inside the duct, and the vacuum picks up what it knocks loose, including lint stuck in crevices.
A shop vac works too, as does a household vacuum with a hose attachment. Add handle sections to the brush when you need more reach into the wall duct.
You can turn the brush by hand. Some kits attach to an electric drill, which spins the brush fast to break debris loose. If yours does, follow that kit's instructions for attaching and running it.
Clear the back of the dryer, the hose and the wall duct
Work from the dryer end toward the wall. Pull out the big clumps first, then let the brush and vacuum handle the rest.
- Pull out any large pieces of lint you can reach by hand. Gently brush debris from the exhaust opening on the back of the dryer, then clear the detached hose, following its turns. Once the reachable clumps are out, move to the dryer-side duct.
- Open the dryer door and push the brush into the duct that leads into the dryer, turning it as you go. Vacuum as you pull the brush back out, using the hose attachment for lint in crevices. When lint stops coming out with the brush, move to the wall duct.
- Push the brush into the duct that goes into the wall, adding handle sections as you need reach. Turn it by hand, or with a drill if your kit is made for that, and vacuum up the lint it loosens. If the brush cannot reach part of the route, arrange for that section to be cleaned.
The vacuum hose is also handy for hard-to-reach debris deeper inside the vent, not only at the openings.
Call a dryer service professional if part of the vent is out of reach. Tell them which part still needs cleaning.
Then clean the outside end
If you can reach the outside end, go there next. Open or remove the vent cover and pull out large lint by hand. Then run the brush along the inside of the duct and vacuum until it's free of debris.
Put the cover back when you're done, including a louvered cover you took off for access. The flap should open freely again, the same way you checked it at the start.
Can't move the dryer at all? You can still clean an outside wall opening you can reach from the ground: take the cover off, brush, vacuum, then put the cover back. The inside still needs doing, so move the dryer once you have help, or book a pro for that part.
Reconnect it and check the outside airflow
Look over the detached duct before putting it back. Replace a damaged section. If the duct is plastic or foil, stop before running the dryer and arrange a compatible metal replacement according to your model's installation instructions. Rigid or semi-rigid metal duct is less likely to kink or get crushed, though it's harder to line up with the wall and the back of the dryer. With suitable corrugated metal duct, position the dryer so the hose squeezes into its shortest, most compact position.
- Clean up any lint left around the dryer, then reattach the vent between the wall and the back of the dryer with its clamps or tape. Check that the connections are secure before restoring power. When you put the dryer back into service, follow the manufacturer's instructions and local regulations.
- Plug the dryer back in. On a gas dryer, have the pro who capped the line reconnect it and turn the gas back on. With your helper, gently slide the dryer back without crushing the duct. Keep the hose as short and direct as you can, because extra length and bends severely restrict airflow and can let lint clog the duct. Check the visible hose for a crush or sharp bend before running the dryer.
- Before the next load, run the dryer empty. On Whirlpool dryers that's 10 to 15 minutes to clear excess dust, and on Maytag dryers roughly 15 minutes to clear leftover debris from the vents. During the run, check a ground-level outside opening: the flap should open fully and airflow at the cap should be strong.
If the flap barely moves or airflow is weak, check the accessible cap for a blockage and the visible duct for a crush or bend. If airflow is still weak or the rest of the route is out of reach, contact a dryer vent service professional to clear or improve the duct before using the dryer again.
If airflow is strong outside but loads still take too long, check your model's warranty and request appliance service. For a Whirlpool warranty request, have your proof of purchase, model and serial numbers, and a description of the problem ready. Samsung owners can check warranty status (opens in a new tab) before requesting service.
Tell the technician whether the dryer is gas or electric, where the vent exits, which sections you cleaned and what happened at the outside flap. For vent cleaning or duct repair, get more than one written estimate and compare the work, materials, completion date and price. That gives you a concrete way to assess the quote without treating a general appliance repair price as the cost of vent cleaning.
Other things you might be wondering
Doesn't cleaning the lint screen take care of this?
No, they're separate jobs. The lint screen gets cleaned after every load and the vent every year or two. On Whirlpool dryers, the screen also gets a deep clean every six months: roll the lint off, wet both sides with hot water, scrub with a nylon brush and liquid detergent, then rinse and dry it thoroughly.
Can I use a leaf blower instead of a brush?
An electric leaf blower is another method. After you've unplugged the dryer (and had a pro cap the gas on a gas model) and disconnected the duct, make sure the outside vent is clear so debris doesn't pile up at the exit. Then put the end of an electric leaf blower into the dryer duct, set it to the lowest setting and blow the built-up lint out through the duct.
How long does the whole job take?
For Maytag's inside-and-outside vent cleaning route, its guide and cleaning tools can get the job done in under two hours.
What if drying is still slow after cleaning?
Check the outside flap and airflow during the empty run first. If airflow is weak, have the remaining vent route inspected. If airflow is strong but drying is still slow, check your warranty and request appliance service. A new vent may be an option when cleaning doesn't restore the route.
Does a ventless dryer need this?
No. Ventless, or condensing, dryers recirculate air through the drum and don't use an outside vent. They're typically installed in smaller homes or apartments. Follow your model's manual for its maintenance.
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