Texas Industrial Infrastructure Services operates strictly as a general contractor. All heating, ventilation and air‑conditioning (HVAC) services—including design, installation, replacement and maintenance—are performed by our network of licensed HVAC subcontractors. We’ve carefully vetted these firms and maintained long‑term partnerships with them, relying on their trusted expertise and state‑issued licenses. TIIS does not hold an HVAC contractor license; rather, we coordinate and oversee the work of these trusted, long‑standing industry partners to maintain compliance and consistent quality.