Ductwork repair and airflow balancing in Austin, TX.

In most Central Texas houses the ductwork lives in the attic, which for four months a year is the hottest place on the property. A duct system up there is doing two jobs badly at once: leaking conditioned air into a space that is already 140 degrees, and gaining heat through insulation that was never great to begin with. It is genuinely common for a house to lose a meaningful share of the capacity it is paying for between the air handler and the register — and none of it shows up as an equipment fault.

The mechanical failures are just as ordinary. Flex duct crushed under storage boxes or kinked around a truss. A boot that pulled loose from the ceiling drywall years ago and has been feeding the attic ever since. Returns sized for a system two sizes smaller than the one that eventually got installed, so the blower is fighting static pressure it was never designed for. A plenum sealed with duct tape, which is the one material in the building that will not stay stuck to sheet metal in an attic.

The reason this matters is that it is invisible from the thermostat. High static pressure raises the blower's power draw, drops the airflow across the evaporator, and makes the coil colder and more likely to ice — which then looks exactly like a refrigerant problem. Measuring static pressure and actual airflow separates the two in minutes, and it is the reason we look at the duct system on repair calls, not only when someone asks for duct work.