Level 4 Enclosure Integrity Testers

These companies own door-fan test equipment and Windows software for testing enclosure integrity. They employ at least one Level 3 certified technician who has been certified to conduct the NFPA blower door test procedure.

Level 4 testers are certified on ISO testing and advanced pressure venting tests, both using complicated multi-point techniques.

C & N Fire Systems Ltd Fort Worth , TX   Phone: Fax:

N32

Mike Costello, Level 4

Level 3 Enclosure Integrity Testers

These companies own door-fan test equipment and Windows software for testing enclosure integrity. They employ at least one Level 3 certified technician who has been certified to conduct the NFPA blower door test procedure.

Level 3 testers are certified to perform multiple blower tests for large enclosures, NFPA lower leak measurement using ceiling neutralization, extended discharge systems and sub-floor only testing.

DSI Detection & Supression International 10935 Cutten Road Houston , TX  77066 Phone: (281)453-4600 Fax: (281)453-4699	N64C	James Flayler, Level 3
Hagemeyer North America 1202 E Sam Houston Pkwy. S. Pasadena , TX  77503 Phone: (713)456-1002 Fax: (803)753-6852	60 guage,E43	Jim Blaa, Level 3
Industrial Fire and Safety 7235 Up River Road (Rear) Corpus Christi, TX  78409 Phone: (361)289-7949 Fax:	Q5E	Scott Tilton, Level 3
SimplexGrinnell Houston TX 7604 Kempwood Drive Houston , TX  77055-1322 Phone: (713)644-8872 Fax: (281)485-4113	*32,Q5E	John Genaro, Level 3
SimplexGrinnell Dallas TX Dallas , TX   Phone: Fax:	970 hp	Brian Scott, Level 2 Wade Tilley, Level 3

Level 2 Enclosure Integrity Testers

These companies own door-fan test equipment and Windows software for testing enclosure integrity. They employ at least one Level 2 certified technician who has been certified to conduct the NFPA blower door test procedure.

Level 2 testers are certified on the NFPA single blower door fan tests & field calibration tests.

AFA INC dba AAA Fire Lubbock , TX   Phone: Fax:	970HP,Q5E	Lawrence Fithen, Level 2 Stan Fithen, Level 2
Firetrol Protection Systems 3800 Distribution Houston, TX  77018 Phone: (713)343-1600 Fax: (713)343-1604	Q5E,Q5Ex2	Timothy Zuck, Level 2 Karl Warrick, Level 2
Firetron Inc Stafford , TX   Phone: Fax:	Q5E	Joseph E. Cantrell, Level 2 Timothy Bui, Level 2
Great Southwestern Fire & Safety Dallas , TX   Phone: Fax:	E43	Larry Miller, Level 2
Liberty Building Technologies, Inc PO Box 1354 Prosper, TX  75078 Phone: (972)347-2462 Fax: (972)347-2610	Q4E	Larry Clay, Level 2
M-Jacks Fire & Safety PO Box 790508 San Antonio , TX  78279-0508 Phone: (210)344-2361 Fax: (210)344-2616	K53	Jody Cruson, Level 2
Multiservicios Ronquillo 12065 Waterside Dr El Paso , TX  79936 Phone: (915)856-9216 Fax:	E53C	Roberto Castro Santana, Level 2
Northstar Alarm & Suppression System LLC Carrollton , TX   Phone: Fax:	N32	Ben Adcox, Level 2
Security International Inc PO BOX 3323 McAllen, TX  78502 Phone: (956)381-6655 Fax: (956)380-3473	Q4E	Tyler Wychopen, Level 2
SimplexGrinnell San Antonio TX San Antonio , TX   Phone: Fax:	970	Glen Peters, Level 2 Mike Goff, Level 2
TFT Fire Protection Inc. Houston , TX   Phone: Fax:	Q56	John PeLata, Level 2 Autumn Lara, Level 2
Webb, Murray & Associates 2525 Bay Area Boulevard Houston, TX  77058 Phone: (281)218-7277 Fax: (281)218-7277	Infiltec fan with DM2	Tracy Peters, Level 2 Antonio Herrera, Level 2 James Emmons, Level 2

Level One Certified Techniciains

These companies own door-fan test equipment and Windows software for testing enclosure integrity. They employ at least one Level 2 certified technician who has been certified to witness the NFPA blower door test procedure.

Level 1 testers are trained in enclosure theory & design, and are certified to witness but but not perform the NFPA blower door test.

There are no companies with Level 1 testers in your area.

Companies that own Retrotec Equipment but don't have registered technicians.

Companies listed below own Retrotec equipment, but have not been certified by Retrotec to perform the NFPA blower door test.

A-1 Fire Equipment Company Inc. 12711 East Freeway Houston TX  77213 Phone: (713)455-0296 Fax: (713)455-4323	Q4E
Advantage Interests Inc. Houston TX   Phone: Fax:	970
Air Worth A/C & Heating Hurst TX   Phone: Fax:	Q56
Assurance Fire Protection LLC El Paso TX   Phone: Fax:	E43
Bon Air Service Co Inc Grand Prairie TX   Phone: Fax:	Q56
Century Fire Systems LLC El Paso TX   Phone: Fax:	E43
Engineered Air Balance Co Inc Houston TX   Phone: Fax:	900
Firecon Austin TX   Phone: Fax:	E43
Granbury Air Conditioning & Heating Granbury TX   Phone: Fax:	Q56
Keys & Walsh Construction 12633 State Hwy 30 College Station TX  77845 Phone: Fax:	Q46
Koetter Fire Protection Service Dallas TX   Phone: Fax:	970
Siemens Cerberus Division Irving Irving TX   Phone: Fax:	60Pa,970
SimplexGrinnell Round Rock TX Round Rock TX   Phone: Fax:
SimplexGrinnell Round Rock TX Round Rock TX   Phone: Fax:	970
SimplexGrinnell, Round Rock TX 1608 Royston Ln - Building #1 Round Rock TX  78664 Phone: (512)634-1800 Fax: (512)634-1819	Q5Ex2,Q5E
Texas Air Doctors 5213 Davis Blvd., Suite K N Richland Hills TX  76180 Phone: (817)329-0334 Fax: (817)488-8978	Q56
Total Safety US Inc. 11111 Wilcrest Green Drive Houston TX  77042 Phone: (832)472-4363 Fax: (713)785-1475	E43
Walker Air Conditioning & Heating Inc McKinney TX   Phone: Fax:	Q56
Westfire Inc Austin TX   Phone: Fax:	900 rental,920
Wilson Fire Equipment & Service Co Houston TX   Phone: Fax:	L32