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Texas Residential Wireman › Tarrant County

Sergio O Casillas

Casillas, Sergio O

Sergio O Casillas holds licenses across 2 Texas trades — Residential Wireman and HVAC Contractor under TDLR License #33811. The license is registered in Tarrant County, Texas. Current status: active.

Verification record

License #33811

  • Residential Wireman

    Residential Wireman · Expires August 14, 2026

    Active

  • HVAC Contractor

    A/C Contractor · Expired June 2, 2026

    Expired
Years in TDLR record
0
TDLR trades held
2
Tenure rank, Residential Wiremans in Tarrant
#42

Scope of work

What these licenses authorize

Residential Wireman

A Residential Wireman license authorizes the holder to install, alter, and repair electrical wiring in one- and two-family dwellings in Texas. The license is narrower in scope than a Journeyman Electrician license — commercial and industrial wiring is out of scope. Qualification requires 4,000 hours of experience plus the TDLR exam, and annual renewal includes continuing education on the current National Electrical Code.

HVAC Contractor

An HVAC Contractor license authorizes a business to install, alter, repair, and service air conditioning and refrigeration equipment in Texas. A Class A license covers equipment over 25 tons; Class B covers under 25 tons. The contractor must designate a Responsible A/C Contractor whose name backs the license and is named on every contract. The license does not cover gas-fired equipment outside the HVAC system, electrical work beyond the unit disconnect, or refrigerant handling for technicians, which requires federal EPA Section 608 certification.

Source

Published from the Texas Department of Licensing & Regulation All Licenses dataset. Record last changed · last verified against TDLR .

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