| Business | Phone |
| Mechanical Dynamics 701 Brazos St, Austin 78701 | (512) 320-9028 |
| Concurrent Design 12310 Rr 620 N, Austin 78750 | (512) 219-8501 |
| Cobb Mechanical Contractors 8222 N Lamar Blvd, Austin 78753 | (512) 836-5445 |
| Mike's Mechanical 700 Little Oak Dr, Austin 78753 | (512) 832-5239 |
| Fox & Hearn Inc 4400 Brandt Rd, Austin 78744 | (512) 282-3646 |
| Hy Tech Controls 10404 Thomaswood Ln, Austin 78736 | (512) 288-2429 |
| J & J Mechanical 1804 Bench Mark Dr, Austin 78728 | (512) 350-8266 |
| Mechanical & Process Syst 7000 Tesoro Trl, Austin 78729 | (512) 219-0330 |
| Porter Co Clean Room 3913 Todd Ln 608, Austin 78744 | (512) 707-1330 |
| Raintree Construction 9600 Brown Ln C, Austin 78754 | (512) 719-5754 |
| Systems Chemistry Inc 12100 Samsung Blvd, Austin 78754 | (512) 832-8762 |
| Triad Mechanical Svc Inc 7001 Us Highway 183 S, Austin 78744 | (512) 243-2214 |
| 5-F Mechanical Co 826 Prairie Trl, Austin 78758 | (512) 251-6880 |
| Alton Copeland's Ac & Heating 10803 Arikara River Dr, Austin 78748 | (512) 280-8041 |
| H-Industrial Construction Svc 2110a Boca Raton Dr 202, Austin 78747 | (512) 280-0244 |
| C & J Electro Mechanic 12915 Dessau Rd, Austin 78754 | (512) 990-3511 |
| Climatech Mechanical 9701 Brown Ln # 306, Austin 78754 | (512) 832-6706 |