Dryer Vent Repair, Rerouting and Replacement
If your dryer still takes two cycles a month after the vent was cleaned, the duct itself is the problem. Crushed runs, prohibited foil flex, too many elbows and screened terminations — all fixable, usually in half a day.
Dryer vent repair starts at $149 for a crushed duct behind the dryer — the most common fault, and one that frequently fixes drying time on its own. Replacing prohibited foil or vinyl flex with rigid metal is from $249, and a full re-route is from $399. Call Dans Hollywood Chimney & Air Duct Cleaning at (818) 536-7759.
Rigid periscope behind the dryer
Replaced with code-compliant rigid metal
Shorter path, fewer elbows, done properly
Backdraft damper, no screen, nest-resistant
Cleared and fitted so it cannot recur
Where a long run genuinely cannot be shortened
When Cleaning the Vent Is Not Enough
A dryer vent that is merely dirty gets cleaned. A dryer vent that is crushed, too long, routed wrongly, built from the wrong material or terminating somewhere it should not needs repairing, and no amount of cleaning will fix any of those. The symptom that distinguishes them is persistence: if your dryer takes two cycles to dry a load, and it still does a month after the vent was cleaned, the duct itself is the problem.
This matters more than it sounds, because a restricted dryer vent is a genuine fire risk rather than an inconvenience. Lint is extremely combustible, a restricted duct accumulates it faster than a clear one, and the dryer's own heating element runs longer and hotter when it cannot exhaust properly. Clothes dryers cause thousands of residential fires in the United States every year and failure to clean and maintain the vent is the leading identified cause.
The installations we find in Los Angeles housing are frequently wrong in ways the homeowner has no reason to know about. Flexible foil or vinyl duct that should never have been used indoors — it is explicitly prohibited by code for this application because it traps lint in its ribs and burns. Runs that are far longer than the permitted equivalent length, with too many elbows. Ducts crushed behind a dryer pushed hard against a wall. Terminations into a crawlspace, an attic or a garage rather than outdoors.
The repair is almost always a matter of making the installation correct rather than anything exotic: rigid or semi-rigid smooth-wall metal duct, the shortest practical route, a proper exterior termination with a backdraft damper and no screen, and mechanical support. It is a half-day job in most houses. Call (818) 536-7759.
What Goes Wrong With Dryer Vents and How We Fix It
Four findings account for most dryer vent repair work. Three of them are installation faults rather than wear, which means they have been costing the homeowner time and money since the day the dryer was fitted.
Crushed Duct Behind the Dryer
The most common single finding, and usually caused by pushing the dryer back against the wall to gain floor space. Flexible duct behind the appliance gets folded flat or kinked into a tight radius, and the airflow through it collapses. Most people never see it because the dryer is in front of it. The repair is a rigid periscope-style duct or a properly supported semi-rigid section with a correct bend radius, which also lets the dryer sit closer to the wall than a flexible duct safely can. It is inexpensive and it frequently fixes the drying time outright.
Wrong Material — Foil or Vinyl Flex
Flexible foil and plastic vinyl duct are sold in hardware shops and are prohibited by code for dryer exhaust, for good reason. The ribbed interior traps lint at every ridge, the material offers far more flow resistance than smooth-wall duct, and foil and vinyl will burn or melt in a lint fire rather than contain it. We find it constantly, often concealed inside a wall cavity where it should never be. Replacement with rigid smooth-wall metal duct is the fix, and inside a wall or any concealed space rigid metal is the only acceptable material.
Run Too Long, Too Many Elbows, or Badly Routed
Code limits dryer duct to a maximum equivalent length, and every elbow counts as several feet of additional equivalent length against that allowance. A run with four or five elbows can exceed the limit while being short in actual measured distance, which is why a 'short' vent can still perform badly. Second-floor laundries and laundries relocated into interior closets are the usual offenders. The repair may be re-routing to a shorter path, reducing the elbow count, or where neither is possible, fitting a booster fan designed for the application.
Bad Termination, Screens and Bird Nests
The exterior termination should have a backdraft damper that opens with airflow and closes when the dryer stops, and it must not have an insect screen — a screen on a dryer vent clogs with lint within weeks and is a frequent cause of a vent that was cleaned and promptly blocked again. We also find terminations discharging into attics, crawlspaces and garages, which dumps warm moist lint-laden air into the structure. Bird nests in the termination are common across the Valley; the fix is removal plus a proper damper hood that excludes nesting without screening.
Signs Your Dryer Vent Needs Repair, Not Just Cleaning
The distinguishing symptom is persistence. If these continue after the vent has been cleaned, the duct itself is at fault and cleaning it again will not change anything.
How a Dryer Vent Repair Runs
Most repairs are completed in a single visit of two to four hours. A full re-route through finished space takes longer and we tell you that before starting.
Inspect the whole run, not just the ends
We trace the duct from the dryer to the exterior termination, measure the actual and equivalent length, count elbows, identify the material, and check the termination. Photographed throughout.
Airflow measurement
We measure airflow at the exterior termination with the dryer running, which gives a number to compare against after the repair rather than an impression.
Written findings and options
You get the findings with the code issues identified, and where there is more than one way to fix it — re-route versus booster fan, for example — we give you both with the costs.
Carry out the repair
Rigid or semi-rigid smooth-wall metal duct, the shortest practical route, mechanically supported, joints taped with foil tape in the correct direction and never fastened with screws that project into the airflow to catch lint.
New termination and verification
A proper hood with a backdraft damper and no screen, then airflow re-measured so you can see the before and after figures, and a full cycle run to confirm the damper operates.
Dryer Vent Repair — Frequently Asked Questions
Where We Provide This Service
Get Your Dryer Vent Repaired Properly
Code-compliant rigid metal, the shortest practical route, a proper damper hood with no screen, and airflow measured before and after. Serving the San Fernando Valley and East LA from 6330 Camellia Ave, North Hollywood, CA 91606.
Dryer Vent Cleaning by City
Dan covers the whole Valley and East LA — CSIA-certified, written estimate first.