HVAC Duct Cleaning in Houston, TX

Why Houston ducts get dirty faster

The cause is usually the return side, not the supply. Most Houston homes run one or two oversized hallway returns. The return box is often framed into drywall, taped at best. Negative pressure pulls 135°F attic air through every gap. That air carries attic dust, insulation fibers, and gypsum grit. The blower then distributes it through the whole house. Humidity does the rest. Wet dust on an evaporator coil becomes a mat, and the coil stays damp most of the year.

A real cleaning visit is not just hoses in registers. We open the plenum. We look at the coil face and the inside of the return box. Mold growth there is common, and it is the actual odor source at startup. Drain pans rust, drain lines clog, ceilings stain. Those get addressed the same trip.

Flex branch runs matter too. Sagging and kinked flex starves the far bedrooms. Boot connections that were only taped have usually let go, dumping cold air into the attic. Cleaning a duct that is disconnected accomplishes nothing.

Cadence here runs shorter than national advice. Three to five years for most homes. Sooner after remodeling, roof work, flooding, or if someone in the house has asthma.