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.

There are no companies with Level 4 testers in your area.

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.

American Fire Technologies 2120 Capital Drive Wilmington , NC   Phone: (910)799-9191 Fax: (910)799-3382	E4A,N51	Michael Taylor, Level 3 Antonio Torres, Level 3 Richard Jones, Level 3
Keller\'s Inc Wilmington , NC   Phone: Fax:	N32C,Q56,Q56x2	John Willis, Level 3 Evan Bryce Dixon, Level 2 Joseph McLean, Level 2

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.

Diebold Fire Protection Services Charlotte , NC   Phone: Fax:	Q5E	Donald Coleman, Level 2
Fire Fighter Products Inc. Williamston , NC   Phone: Fax:	970	Jamie Todd, Level 2
SimplexGrinnell, Charlotte NC 9826 Southern Pine Blvd Charlotte, NC  28273 Phone: (704)501-0500 Fax: (704)525-1550	Q56	David Wilson, Level 2
SimplexGrinnell, Raleigh NC 540 Civic Boulevard Ste 105 Raleigh, NC  27610 Phone: (919)279-6400 Fax: (919)255-3401	970HP,Q56	Peter Willie, Level 2
T & S Fire & Security Inc Greensboro , NC   Phone: Fax:	N64C	Dwain Murphy, 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.

Bass Air Conditioning Co Fayetteville NC   Phone: Fax:	K53
Pinnacle Fire Systems Inc. Apex NC   Phone: Fax:	N64C
Protection System Technologies 620 Griffith Road, Suite G Charlotte NC  28217 Phone: (704)525-8905 Fax:	Q46