Cleaning a dryer vent duct is a simple but critical home safety job that helps prevent fires and keeps your dryer working efficiently.

Why cleaning matters

  • Lint build‑up in the vent is a major cause of dryer fires and overheating.
  • A clogged vent makes cycles longer, wastes energy, and can shorten the life of the dryer.
  • Most home pros recommend cleaning the duct at least once a year, or more often for heavy use.

What you’ll need

  • Dryer vent cleaning brush kit (long flexible brush/rods).
  • Vacuum with hose attachment or shop‑vac.
  • Screwdriver or nut driver to loosen clamps/screws on the vent.
  • Dust mask and safety glasses if you’re sensitive to dust.

Safety note: If you have a gas dryer, always shut off the gas valve and unplug the dryer before moving or disconnecting anything.

Step‑by‑step: inside and duct

  1. Unplug and pull out the dryer
    • Unplug the dryer; for gas, also shut off and cap the gas line according to manufacturer or pro guidance.
 * Carefully pull the dryer away from the wall just enough to access the vent hose without kinking it.
  1. Disconnect the vent hose
    • Loosen the clamp where the vent hose connects to the back of the dryer (and sometimes at the wall) with a screwdriver or by squeezing the spring clamp.
 * Gently twist and pull the hose off both the dryer and the wall/exhaust elbow.
  1. Clean the dryer outlet and short run
    • Use the dryer vent brush to sweep out lint from the outlet port on the back of the dryer.
 * Use a vacuum hose to suck out loosened lint from that opening and the nearby interior duct path, as far as you can comfortably reach.
  1. Clean the vent hose itself
    • Feed the brush through the flexible hose, twisting and pushing to break up lint; periodically pull out and vacuum what you dislodge.
 * Repeat from both ends until the brush passes through easily and comes out fairly clean.
  1. Clean the in‑wall duct run
    • From indoors (or outdoors, if easier), insert the vent cleaning brush and rods into the duct, adding rod sections as you go.
 * Rotate the brush as you advance it, then slowly pull it back out, vacuuming lint as it falls.

 * For longer runs, many kits can attach to a drill; if you use one, spin slowly and avoid forcing the rods around sharp bends to prevent damage.

Cleaning the exterior vent

  • Go outside and locate the exterior exhaust vent cover (often on a wall or low on the foundation).
  • Remove the cover or open the flap, then brush and vacuum out lint from the outer end of the duct.
  • Make sure the flap or louvers move freely and aren’t blocked by lint, nests, or debris.

Reassembly and quick test

  • Reattach the vent hose securely to both the dryer and wall/exhaust using the clamps; ensure there are no crushed sections or sharp bends.
  • Plug the dryer back in (and restore gas if applicable), then gently slide it back into place without pinching the duct.
  • Run the dryer empty on a warm cycle for 10–15 minutes to blow out any remaining dust and confirm strong airflow at the outside vent.

TL;DR: Unplug the dryer, disconnect the vent hose, brush and vacuum lint from the hose, the dryer outlet, the in‑wall duct, and the exterior vent, then reconnect everything and run an empty cycle to clear remaining dust.

Information gathered from public forums or data available on the internet and portrayed here.