Smooth-wall 4-inch metal duct — the only material permitted inside walls and ceilings.
Concealed dryer exhaust must be smooth-wall rigid metal, joined so the interior stays smooth in the direction of airflow, with no screws penetrating into the airway. The reason is mechanical rather than bureaucratic: every ridge, seam or projecting screw tip is a shelf that catches lint, and concealed duct cannot be inspected or effectively cleaned.
We work on rigid metal duct every week across DFW. CSIA-certified, written quotes, financing available.
Flat fee confirmed when you book. Same-week scheduling. A pass/fail verdict within 48 hours.
No airflow, overheating dryer, burning smell, or a vent you're not sure about? We answer 7 AM to midnight and the assessment ends in a written safe-to-use verdict — including a do-not-use notice when the evidence supports one. After-hours dispatch runs subject to crew availability.
Emergency line