| Business | Phone |
| Western Boiler Svc Co Po Box 801944, Houston 77280 | (713) 690-1697 |
| Gulf Coast Boiler Svc Co 9408 Summerbell Ln, Houston 77074 | (713) 271-6877 |
| A & H Refractories Inc 317 N Stiles St, Houston 77011 | (713) 923-1301 |
| Aalborg Industries 6005 South Loop E, Houston 77033 | (713) 643-2488 |
| B F & Hlp 5916 W 34th St, Houston 77092 | (713) 666-8186 |
| Boiler Burner Sales & Svc Inc 1507 Penn City Rd, Houston 77015 | (281) 860-0545 |
| Boilers Furnaces & Heaters Svc 10121 Bassoon Dr, Houston 77025 | (713) 666-8186 |
| Cisco Boiler Svc Co 5709 Old Spanish Trl, Houston 77023 | (713) 928-5700 |
| Geo-Per Intl Inc 1146 Sheffield Blvd, Houston 77015 | (713) 453-6189 |
| International Boiler Systs Inc 9125 Airport Blvd C5, Houston 77061 | (713) 947-8400 |
| Jerryco Machine & Boiler Works 2403 Appelt Dr, Houston 77015 | (713) 224-7900 |