Dominion Air & Heat LLC is a Mechanical, HVAC company. Dominion is a woman owned SBE certified through COH, Port of Houston, Metro. HUB certified, Section 3 Certified, Hire Houston First. We have proudly been serving the Texas HVAC market since 1988. Dominion has a solid reputation and extensive background in HVAC/ Mechanical installation and design build projects for commercial, industrial and institutial construction. Dominion provides its customers with the highest possible quality in materials and workmanship. Dominion holds a class A state of Texas Air Conditioning and Heating License.