| Business | Phone |
| Air Conditioning Industries 308 W Hamilton St, Houston 77091 | (713) 691-0131 |
| Birdwell Co 3708 Greenhouse Rd, Houston 77084 | (281) 492-1786 |
| Domestic Manufacturing Corp 2415 Mcallister Rd, Houston 77092 | (713) 682-2574 |
| Thermo King 3203 Produce Row, Houston 77023 | (713) 923-1996 |
| Goodman Manufacturing Co Lp 2550 North Loop W 400, Houston 77092 | (713) 861-2500 |
| Matticks Industries Inc 11232 Brittmoore Park Dr, Houston 77041 | (832) 243-0662 |
| Marc Climatic Controls Inc 1611 Elmview Dr, Houston 77080 | (713) 464-8587 |