Air Duct Mold Removal in Houston, TX

Air duct mold removal in Houston homes

Most Houston systems put the air handler in a hot attic. Insulated flex branches drop to ceiling registers. One or two oversized hallway returns feed the blower. That layout is the reason mold starts where it does. Return-side leakage pulls humid attic air past the coil. Warm wet air hits a cold metal plenum. Condensation forms. Growth follows on the coil face and inside the return box.

So removal is not a brushing job. Wiping fuzz off a register changes nothing if the drain pan still backs up. We look at the pan, the trap, the slope of the drain line, and the boot connections first. Taped-only boots dumping air into the attic get sealed. Kinked flex gets straightened or replaced. Porous material that is colonized does not clean. Internal fiberglass liner in older metal duct and contaminated flex usually come out instead.

Honest limits matter here. Texas regulates mold remediation above a set area threshold, and a licensed remediator handles that scope. Small, contained growth inside a return box is a different animal.

Check it yourself. Pull the return grille. Shine a light at the coil. Black speckling on the fins means moisture, not dust. So does rust streaking, or a musty smell at startup.