AEP Texas is the regulated transmission and distribution utility — the company that owns the poles and wires — for the Coastal Bend, including Corpus Christi. Even in deregulated Texas, the energy-efficiency programs are run by the wires utility, so Corpus Christi homeowners use AEP Texas programs regardless of who bills them for power.
AEP Texas's residential portfolio lists A/C system duct testing and sealing as a covered measure under the Residential Standard Offer Program. A Standard Offer works differently from a flat rebate: AEP Texas pays an incentive to an enrolled contractor based on the measured energy savings, and that benefit is passed through as a lower project cost. Because it's tied to verified savings rather than a fixed equipment rebate, there's no single dollar figure to quote up front — the enrolled contractor prices the job with the incentive applied. Lower-income households can qualify for the Hard-to-Reach Standard Offer Program, which carries a higher incentive for the same work.
This is why duct sealing — not duct cleaning — is the rebate-relevant duct service: sealing produces measurable energy savings (leaky ducts waste 20–30% of cooling), which is what the incentive pays for. Cleaning improves air quality but doesn't generate the verified kWh savings these programs fund.