Attach the hose to the dryer outlet first, then to the wall vent

A dryer hose connects your dryer to the outside vent or wall duct. You attach it in two places: one end screws or clamps onto the back of the dryer, and the other end slides into the wall vent opening. Most people start at the dryer because it is easier to see what you are doing, then work backward to the wall. The whole job takes about 10 minutes and requires only a screwdriver or a hose clamp tool.

The hose itself comes in three types: foil accordion hose (cheapest, but crushes easily), rigid aluminum (lasts longer, harder to bend), and semi-rigid plastic (middle ground). Whichever type you have, the attachment method is the same—the connection points are standardized across dryer brands.

Key Takeaways

  • The dryer outlet is a 4-inch round or rectangular opening on the back of the machine, and you attach the hose there first before moving to the wall.
  • Most dryers use either a screw clamp (tighten with a screwdriver) or a spring clamp (squeeze the tabs to loosen), and you should tighten it firmly enough that the hose does not slip but not so hard that you crush the hose.
  • The wall vent opening is usually 4 inches wide, and the hose slides into it until it stops naturally—do not force it or you will damage the duct.
  • After both ends are attached, check that the hose has no kinks or bends tighter than a 45-degree angle, because crushed sections trap lint and reduce airflow.

Gather your tools and materials

You need the dryer hose itself, a screwdriver (usually Phillips head, but check your clamp), and possibly a new hose clamp if the old one is rusted or missing. If you are replacing an old hose, have a trash bag ready—old lint inside the hose will fall out as you remove it.

Before you start, turn off the dryer and unplug it from the wall outlet. If your dryer is gas-powered, also turn off the gas valve at the wall. Move the dryer away from the wall far enough that you can reach behind it comfortably—usually 12 to 18 inches is enough. If the dryer is built into a cabinet or laundry center, you may need to remove a panel or access cover first; check your dryer manual for the exact steps.

Remove the old hose if you are replacing one

Locate the clamp at the back of the dryer where the hose connects. If it is a screw clamp, turn the screw counterclockwise with your screwdriver until it is loose enough to slide off. If it is a spring clamp (two metal tabs sticking out), squeeze both tabs toward each other and slide the clamp off. Once the clamp is loose, twist the hose gently and pull it straight out of the dryer outlet.

Now go to the wall vent opening and pull the other end of the hose out. It should slide out easily; if it is stuck, do not yank it—twist gently while pulling, or you may tear the hose or damage the duct. Once both ends are free, dispose of the old hose.

Attach the hose to the dryer outlet

Slide one end of the new hose onto the dryer outlet opening at the back of the machine. Push it on straight and all the way in—you should feel it seat firmly. The hose end should cover the outlet completely with no gaps.

Now slide the clamp over the hose, positioning it so it sits on the ribbed part of the hose (not on the smooth dryer outlet itself). If you have a screw clamp, turn the screw clockwise with your screwdriver until the clamp is snug. Tighten it firmly—the hose should not spin or slide when you try to twist it—but do not over-tighten, or you will crush the hose and reduce airflow. If you have a spring clamp, push it onto the hose until it clicks into place; the tabs should point downward or to the side, not upward where they will catch on something.

Route the hose to the wall vent

Carefully pull the dryer away from the wall, guiding the hose as you go so it does not kink or get pinched. The hose should follow a path with no bends tighter than 45 degrees. If your dryer sits in a corner or tight space, you may need to use a 90-degree elbow fitting (a short curved connector) to change direction smoothly—these screw onto the dryer outlet instead of the hose itself.

As you route the hose, keep it as short as possible. Long runs of hose trap lint and reduce the dryer's ability to push air outside. If the hose must travel more than 8 feet, consider upgrading to rigid aluminum duct, which has less resistance than flexible hose.

Attach the hose to the wall vent opening

Slide the free end of the hose into the wall vent opening. Push it in straight until it stops—it should go in about 2 to 3 inches and then hit a slight resistance from the duct behind the wall. Do not force it further, or you will bend the internal duct. The hose should sit flush with the wall opening with no gaps around the edges.

If your wall vent has a clamp or collar around the opening, tighten it now to hold the hose in place. Some vents use a setscrew; others use a spring clamp. Tighten firmly but not so hard that you crush the hose. If the vent opening is loose or damaged, you may need to caulk around the hose with silicone caulk to prevent air leaks, but this is optional for indoor ducts.

Check your work before pushing the dryer back

Before you move the dryer back into its final position, inspect the entire hose from the dryer to the wall. Look for kinks, crushed sections, or places where the hose is pinched. Gently flex the hose with your hand—it should bend smoothly without cracking or creasing. If you see any damage, replace that section of hose or the entire hose if the damage is near a connection point.

Verify that both clamps are tight by trying to twist the hose at each end. It should not move. Now push the dryer back into place slowly, making sure the hose does not get pinched between the dryer and the wall or cabinet. Once the dryer is in its final position, plug it back in and turn on the gas valve if applicable. Run a test cycle with no clothes inside to make sure air is flowing freely and there are no unusual noises.

Frequently Asked Questions

What size hose do I need for my dryer?

Most household dryers use a 4-inch hose, which is the standard size. Check the outlet opening on the back of your dryer—it will be labeled 4 inches. Some older or commercial dryers may use 3.25 inches or 5 inches, so measure the opening before you buy a replacement hose.

Can I use duct tape to seal the hose connections?

No. Duct tape degrades in the heat from the dryer exhaust and sheds fibers into the duct, which traps lint and creates a fire hazard. Use only the clamp that came with your hose or a replacement clamp rated for dryer use.

How tight should the clamp be?

Tight enough that the hose does not slip or rotate when you try to twist it, but not so tight that you can see the hose material crushing or flattening. If you crush the hose, you reduce airflow and trap lint. A good test is to try rotating the hose by hand—it should not move more than a quarter turn.

What if the hose is too short to reach the wall vent?

Buy an extension hose or a longer hose. Do not stretch the existing hose or use multiple short pieces connected with duct tape. Each connection point is a place where lint can escape into your walls. If you must extend the hose, use hose couplers (metal sleeves that slide over both hose ends and are clamped on both sides).

Should the hose go inside or outside the wall?

The hose should run on the outside of the wall, from the dryer to the vent opening. Never run a dryer hose inside a wall cavity—lint will accumulate inside the wall and create a fire hazard. The hose should be visible and accessible for cleaning.