AC Repair & Duct Testing in Round Rock, TX

An air handler on a platform in a hot Round Rock attic with flexible ducts branching from the plenum and a secondary drain pan beneath it.

The attic

Where the capacity usually went

In nearly every house in this county the ductwork, and often the air handler itself, lives in an attic that runs well above 130°F on an August afternoon. Air passes through that space on its way to you. A leak on the supply side is cooling the roof; a leak on the return side is pulling attic air directly into the system, all day, every day.

So we measure. Static pressure across the system and a leakage test, not a torch and a verdict. A house that has never been comfortable since it was built is very often a duct problem that has been treated as a capacity problem for a decade.

If the house is newish

What we do in houses

Six things

No cooling, no heat

Checked in order of cost. Capacitors, contactors, float switches, filters, thermostats and breakers before anything expensive gets discussed, and the reading shown to you either way.

Annual service

Once a year for most houses, with combustion tested on gas heat, defrost proved on heat pumps and the figures written down so next year’s visit means something.

Duct testing and repair

Measured, then put right where the measurement says to. Straightening a crushed flex run costs very little and is regularly worth more than any equipment change.

The room that never keeps up

A damper, a kinked duct, a missing return, or a bonus room that was finished without anybody adding duct to it. We find out which before proposing anything.

Condensate

Primary drain, secondary pan and float switch, all tested. With the air handler above your ceiling this is the cheapest insurance in the house and the most commonly neglected.

Replacement

Sized from the house in writing, with the ductwork assessed first. A correct system on poor duct will disappoint you exactly as reliably as the old one did.

Three things worth hearing early

They will save you money whether or not you ring us

Bigger is not safer

An oversized system satisfies the thermostat quickly and stops, and drying only happens while the machine runs. That is how you get a house that is cold and still feels clammy, along with a compressor that starts and stops all day.

A dusty house is usually a filter path

Not the grade — the path. If the cabinet does not seal around the filter, or the return is drawing from the attic through a gap at the plenum, a better filter changes very little because most of the air goes around it.

Vents you can hear are telling you something

Whistling and roaring registers are a sign of high static pressure, which usually means undersized or restricted ductwork. It is not cosmetic: the same restriction is shortening the life of the blower and the compressor.

One more

If your house is under ten years old

Read the new-build page before you spend anything. Williamson County put up a great many houses in a hurry, and when one of them has never cooled properly the equipment is usually the part that is working. There may also be a warranty route that is cheaper than any contractor, including us, and the page says how to use it.

New-build houses Book a visit

Houses