Air Duct Repair in Houston, TX

When one room never cools and the vent barely breathes

That weak register usually is not the equipment. A flex run sags or kinks. Sometimes it pulls off its boot. Tape lets go in attic heat. The collar connection tears first. Conditioned air then dumps into the attic, and the room it was meant for stays hot all August.

Age of the house narrows it fast. Pre-1960 Houston homes have round galvanized sheet metal or octopus trunk-and-branch, sometimes original under-slab ducts in 1950s ranches. Those collect water and sediment. Roots get in too. Abandonment and an overhead rebuild is often the honest call. From the 1960s through the 80s, rectangular trunks carry internal fiberglass liner that erodes and sheds fibers after decades. Patching a shedding liner accomplishes little.

Newer builds use insulated flex, R-6 or R-8, strapped through the attic. It sags between supports and collects dust in low spots. Stored boxes and foot traffic crush it too.

We also look at what the ducts sit next to: condensate dripping from uninsulated plenum seams, mold on returns near the air handler. Return plenums built into stud bays or platform returns pull attic air straight into the system.

You can check some of this yourself. Pull a register cover. Look for daylight or dust ridges. Check for a disconnected boot.