Dryer Vent Repair & Duct Replacement in Orlando

Most dryer vent problems show up the same way: long drying times, a hot laundry room, lint where it shouldn’t be. A cleaning fixes the ones caused by lint. The rest are physical faults in the duct itself, and they come back no matter how often the vent is brushed. This page covers those repairs and the code rules they have to meet.

The code a dryer vent repair has to meet

Florida’s residential code sets the rules in section M1502 (FBC-R 2023 via UpCodes). The points that drive most repairs:

Each rule, with its section number and a worked length example, is explained in our plain-English guide to the Florida dryer vent code.

Crushed transition hose and foil or vinyl connectors

The short connector between the dryer and the wall takes the most abuse. Every time the dryer is pushed back, a flexible hose can fold or flatten behind it, and a flattened hose can cut airflow sharply without anyone noticing. White vinyl hose and thin foil accordion hose are still common, even though the U.S. Fire Administration advises replacing coiled-wire foil or plastic venting with rigid, non-ribbed metal duct.

We replace the connector with the shortest practical run of listed metal transition duct or, where the space allows, rigid or semi-rigid metal with smooth bends. Hose that has been run inside a wall or ceiling is removed from the concealed space entirely, because the code does not allow a flexible transition duct to be hidden in construction. The goal is a connection that still works after the dryer is slid back into place, so we check the airflow with the dryer in its final position.

Disconnected ducts in the attic

Ducts that run through the attic can separate at a joint over time, particularly where they were only pushed together, where a support has failed, or where someone has worked in the attic and knocked a section loose. The dryer then fills the attic with hot, damp, lint-laden air. The USFA notes that exhaust vented into an attic, crawl space or wall can lead to mold and poor indoor air.

Signs include lint on the attic insulation, a musty smell near the laundry, weak airflow at an outside cap even though the reachable duct is clean, or a roof cap that barely moves. We trace the run, replace damaged sections with smooth metal duct, lap the joints so the male end points in the direction of airflow, seal them with foil tape rather than screws, and support the run so it can’t sag or pull apart again.

Replacing termination caps

The cap outside is often the cheapest part and the biggest restriction: stuck flaps, louvers that no longer open, built-in screens and mesh “pest guards” all trap lint. A replacement needs a backdraft damper and no screen. Cap styles, roof caps, birds and clearance rules are covered on the vent cover replacement page.

Recessed dryer boxes and pushing the dryer back

Laundry closets in many homes are shallow, and the dryer ends up pressed against the wall with the hose crushed behind it. A recessed dryer vent box set into the wall gives the connection a pocket to sit in, so the dryer can go back farther without folding the transition duct. Where the wall allows, a recessed box often restores a surprising amount of airflow for a small repair. Low-profile periscope-style metal connectors can solve the same problem when a box isn’t practical.

When the run itself is the problem

Every elbow counts against the 35-foot limit, so a run that measures 25 feet can already be over it. Smoothing sharp elbows and straightening sags are repairs; moving the termination or rebuilding the route is a bigger job, explained under giving the vent a new, shorter route. Where a run truly can’t be shortened, a listed dryer exhaust power ventilator is the code’s fallback, and the booster fan guide explains when one makes sense. An existing fan that alarms or stops running is covered on a dryer booster fan that isn’t working.

Condensation and water in the duct

Warm, wet exhaust can condense where a duct crosses cooler space, and water collects at sags; the USFA notes condensation in long or bent vents attracts lint. The fixes are sloping the duct toward the outside, removing low spots, sealing joints and, where the dryer maker calls for it, insulating the duct. If you’re seeing drips or rust, start with why there’s water in a dryer vent to rule out a roof or cap leak.

Gas dryers

What affects the cost of a dryer vent repair

The biggest factors are how much duct is replaced, whether the run is in an open attic or inside finished walls and ceilings, whether exterior finishes or roofing have to be cut and patched, roof height and material for roof terminations, and the parts involved (caps, recessed boxes, listed power ventilators). The repair is scoped after an inspection and explained before any work is scheduled. Many repairs are found during a dryer vent cleaning, when the airflow reading stays low after the duct is clean.

Fitting a vent where there is not one

Not every call is a repair. Laundry rooms get moved, additions get built, and dryers occasionally turn out never to have been vented outside at all.

A new installation is the same set of decisions as a repair, with the route as the main variable: the shortest practical run to an exterior wall or the roof, rigid metal duct rather than foil flex, and as few elbows as the layout allows, because each one counts as several extra feet against the code length limit.

Where the only available route is long, that is a rerouting conversation rather than a repair — see dryer vent rerouting and relocation. And if the existing duct vents into a wall cavity, an attic or a garage rather than outside, that is doing real damage and should be dealt with promptly.