Ductwork, Sealing & Airflow Balancing
The reason one room never cools is almost never the air conditioner.
What's actually involved
A Dallas attic reaches 150° in July. Every leak in the ductwork up there is air you paid to cool, dumped into the hottest space in the building — and the industry estimate is that a typical home loses twenty to thirty percent of it that way.
When someone calls about an upstairs bedroom that never gets comfortable, the answer is almost never a bigger air conditioner. It is leakage, an undersized return, poor balancing, or a duct run that has come apart entirely.
Room-by-room airflow measurement
Actual CFM at every register, compared against what that room should be receiving.
Static pressure testing
The single most revealing measurement in HVAC, and the one most rarely taken.
Leak location and sealing
Mastic and mesh at every joint and boot — not tape that lets go in attic heat.
Return air correction
Undersized returns strangle the whole system. We resize rather than work around them.
Duct insulation
R-8 where it belongs, so cooled air survives the trip across the attic.
Before and after readings
Documented, so the improvement is a measurement rather than a claim.
How the job runs
- 01
Airflow audit
Static pressure, temperature split and register-by-register CFM recorded across the house.
- 02
Findings explained
You see the numbers and the photos from the attic, with the fixes ranked by impact per dollar.
- 03
Sealing and repair
Joints sealed, damaged runs replaced, returns corrected and insulation brought up to spec.
- 04
Rebalance and verify
Dampers set, readings retaken, and the difference documented for you.
Questions we get every week
Heat rises, attic ducts leak, and a single-zone system serving two storeys will always favour the return closest to it. Sealing, balancing and sometimes zoning fixes it — a larger system usually does not.
Something not covered here? Call +1 (214) 555-0147 and talk to a licensed HVAC technician directly.
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