Laundry and stains

How to clean a dryer: lint screen, lint slot, drum and sensors

To clean a dryer, unplug it, wash the lint screen in warm soapy water, and vacuum lint out of the screen slot with a long, thin attachment. Wipe the drum and door seal with a damp soapy cloth, clean the metal moisture sensor bars, then pull the dryer out and vacuum the lint behind and under it. Clean the vent duct once a year as well.

Written by BroombookPublished 7 steps Easy

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At a glance

Time
30 to 45 minutes
Difficulty
Easy
How often
Lint screen every load; deeper clean every 3 to 6 months

What you need

  • Vacuum with crevice tool, plus a long flexible lint attachment if you have one
  • Soft nylon brush or old toothbrush
  • Dish soap and warm water
  • Microfiber cloths
  • Rubbing alcohol (for the moisture sensor bars, if your manual allows it)
  • Old towels
Products that help
On this page

Step by step: how to clean a dryer

Safety first. Unplug the dryer before you vacuum inside the lint slot or move it, and move a gas dryer gently so the gas connector is not strained. Never use flammable solvents inside the drum, and per NFPA never dry anything that has been in contact with gasoline, paint thinner, cooking oil or alcohol.

  1. 1

    Unplug the dryer

    Pull the plug, or switch off the breaker if you cannot reach the outlet. For a gas dryer, unplugging stops the igniter; leave the gas valve alone unless you are moving it far from the wall.

  2. 2

    Wash the lint screen

    Peel off the lint, then hold the screen under the tap. If water beads and pools on the mesh instead of running through, it has a waxy film from dryer sheets. Scrub both sides with warm soapy water and a soft brush, rinse, and let it dry completely before putting it back.

  3. 3

    Vacuum the lint screen slot

    Lint slips past the screen and collects in the slot below it. Feed a long, thin vacuum attachment or a flexible lint brush down into the slot and work it around until no more lint comes out. Do it gently so you do not push lint further down.

  4. 4

    Wipe the drum and door seal

    Wipe the inside of the drum, the back wall and the door seal with a cloth wrung out in warm soapy water, then wipe again with plain water and dry. If a pen, crayon or gum has marked the drum, see the section below before you scrub.

  5. 5

    Clean the moisture sensor bars

    Most sensor-dry models have two curved metal strips inside the door opening or on the back wall. Fabric softener and dryer sheets coat them so the dryer stops too early or runs too long. Wipe them with a cloth dampened with rubbing alcohol or soapy water, as your manual specifies, and let them air dry before you run the dryer.

  6. 6

    Clean behind and under the dryer

    Slide the dryer out and vacuum the floor, wall and the back panel, where lint builds up. Check that the duct behind it is not crushed or kinked; if it is due for a full cleaning, follow our dryer vent guide while it is pulled out.

  7. 7

    Wipe the outside and run a test load

    Wipe the top, control panel and door with a damp cloth and dry them. Push the dryer back without crushing the duct, plug it in, and run a load of old towels on a short heated cycle to make sure everything is dry and there is no residue on the drum.

How to get ink, crayon or gum off a dryer drum

Remove marks with the gentlest thing that works, wipe the drum clean, then tumble old towels to pick up anything left. Never spray flammable solvents into the drum and then run heat.

MarkWhat to do
InkDab with a cloth dampened with rubbing alcohol, wipe with soapy water, leave the door open for 30 minutes so the alcohol evaporates, then tumble old rags to catch any leftover ink
Crayon or lip balmRun the empty dryer for a minute or two to soften it, unplug, then wipe it off with a dry cloth followed by soapy water
Gum or candyHarden it with a bag of ice, then lift it with a plastic scraper; wipe the residue with soapy water
Dye stains on a white drumA paste of baking soda and water on a soft cloth often lightens them; some dye stays and is harmless once dry

Check your manual before using any abrasive on a stainless steel or coated drum.

Why the lint screen and slot matter for fire safety

Lint is flammable, and a dryer that cannot move air runs hotter. NFPA lists failure to clean as the leading cause of home dryer fires and says to clean the lint filter before or after each use and remove lint that collects around the drum.

The U.S. Fire Administration adds two easy ones: never run the dryer without the lint filter in place, and do not forget the back of the dryer, where lint builds up. Keep the area around the dryer clear of boxes and laundry, and do not leave it running when you go out or go to bed.

Dryer sheets and the clogged lint screen

Dryer sheets leave a waxy coating that you cannot see but that blocks airflow through the screen. ENERGY STAR says this film reduces air flow and can affect the motor over time, and recommends scrubbing the screen with a toothbrush once a month if you use them.

The quick test is water: a clean screen lets tap water straight through. If you would rather skip sheets, wool dryer balls reduce static and drying time a little without the coating. Our microfiber cloth guide explains why softener and sheets also ruin cleaning cloths.

Mistakes to avoid

  • Only peeling lint off the screen and never washing off the dryer sheet film.
  • Putting the lint screen back wet, or running the dryer without it.
  • Spraying a solvent or degreaser into the drum and then running heat.
  • Ignoring the moisture sensor bars, then blaming the dryer when sensor-dry stops early.
  • Pushing the dryer back against the wall and crushing the duct behind it.

Products that make this easier

Optional. Everything above works with basic supplies; these just save time or effort.

  • For the lint slot

    Dryer vent vacuum hose attachment

    A long, flat flexible nozzle that fits most shop and household vacuums and reaches down into the lint screen housing.

    See it on Amazon
  • Loosens packed lint

    Dryer lint trap brush (long, flexible)

    Twisted-wire brush that bends into the lint slot. Pair it with a vacuum so you lift lint out rather than push it down.

    See it on Amazon
  • Instead of dryer sheets

    Woolzies wool dryer balls

    Soften and separate laundry without leaving film on the lint screen or sensor bars. They do less for static on synthetics.

    See it on Amazon
  • For the drum and outside

    E-Cloth General Purpose Cloth

    Wipes the drum and control panel clean with just water, so you leave no residue to bake on the next cycle.

    See it on Amazon

As an Amazon Associate, Broombook earns from qualifying purchases. Links open the product on Amazon, where sizes, sellers and prices change.

FAQ

Frequently asked questions

Can you wash a dryer lint screen with water?

Yes. Scrub it with warm soapy water and a soft brush, rinse, and let it dry completely before putting it back. A dry screen is important; never run the dryer without it.

What can I use to clean the inside of my dryer?

A cloth wrung out in warm water with a little dish soap works for the drum and door seal. Wipe again with plain water and dry it before running the next load.

How do I clean the lint trap housing without taking the dryer apart?

Use a long, thin vacuum attachment or a flexible lint brush down the slot. A full teardown of the lint duct is a job for a technician.

Why does my dryer take so long to dry clothes?

The most common causes are a clogged lint screen, lint in the vent duct, a crushed duct behind the dryer, or dirty moisture sensor bars. Check them in that order.

How often should a dryer be cleaned?

Clear the lint screen every load, wash it and the sensor bars every few months, and clean the vent duct at least once a year.

Sources

  1. ENERGY STAR: clothes dryers
  2. NFPA: clothes dryer and washing machine safety tips
  3. U.S. Fire Administration: clothes dryer fire safety flyer

General cleaning information. Always follow the care label and your manufacturer’s instructions, and test any cleaner on a hidden spot first.