Organization

President
Chief Executive Officer

Herb L. Smith

Vice Presidents

John Gilbert | Mark Mendenhall 

Associates

Mark Corder | Fred Barnes | George Hertensteiner | Will Bowden
Tommy BowdenTommy M. Ford | Tom Williams | Don Littrell


 

Herb L. SmithPresident/Chief Executive Officer - Southeast Office
Contact: herbs@phahou.com

Education: 

University of West Florida,
Pensacola Junior College

herb smith
Professional Associations:

Qualified Elevator Inspector NAESA #619
Certified Elevator Inspector State of Florida #113
Certified Elevator Inspector State of Alabama #372
Texas Department of License and Regulation Inspector #363
Florida Certificate of Competency #CC324

 Experience: Dover Elevator Company 11 Years
Field Engineer/Modernization Sales
New Equipment and Modernization Sales
District Manager
Herb resigned from Dover Elevator Company in September of 1989 and joined the Houston office of Persohn/Hahn Associates, Inc., as an Associate.  In 1992 he was made a Partner.  Herb assumed the position of Vice President in May, 1994. In January of 2000, Herb became the President and Chief Operating Officer.  In January of 2009, Herb became CEO.

 

John P. Gilbert
Vice President - Houston Office
Contact: jgilbert@phahou.com

Education: 

B.S. in Electrical Engineering University of Missouri, Rolla

John Gilbert 
Professional Associations: National Association of Elevator Safety Authorities

 Experience:

Westinghouse/Schindler Elevator Company - 26 years
Service Engineer
Service and New Sales
Regional Modernization Manager Southwest Region - Houston, Texas

John joined Persohn/Hahn Associates, Inc. in January 1998 as an Associate. John was promoted to Vice President in December 2005.

 

Mark Mendenhall
Vice President -Austin / San Antonio Office

Contact: mem@phahou.com

Education: 

B.S. in Business Adminstration, University of Arkansas, Fayetteville, Arkansas

 Mark Mendenhall
Professional Associations:

Texas Department of License and Regulation Inspector
National Association of Elevator Safety Authorities

Experience:

Dover Elevator Company 19 Years
New Equipment and Modernization Sales
Branch Manager – San Antonio, TX

Mark joined Persohn/Hahn Associates, Inc. in January 2000 as an Associate. Mark was promoted to Vice President in December 2007.

 

 Mark Corder

Associate - Houston Office

Education:  Houston Community College
San Jacinto Jr. College
University of Houston
 Mark Corder
Professional Associations: Qualified Elevator Inspector NAESA #C4644
Elevator Inspector City of Houston
Elevator Inspector State of Texas
Texas Department of License and Regulation Inspector #20085
Experience:

Dover and ThyssenKrupp Elevator Company 42 Years
Construction Mechanic
Construction Supervisor
Service Superintendent
Construction Manager
Regional Construction Manager

Mark joined Persohn/Hahn Associates, Inc., in 2011, as an Associate.

 


 

Tommy Bowden
Associate

Contact: tbowden@phahou.com

Education:  International Union Elevator Constructors
ThyssenKrupp Business Academy
Tommy Bowden 
Professional Associations:

Qualified Elevator Inspector NAESA #C4944
Elevator Inspector City of Houston

Texas Department of License and Regulation Inspector #20169

 Experience:

Otis Elevator Company 5 Years
Field Installation
Schindler Elevator 1 Year
Field Installation
Montgomery/Montgomery & KONE/KONE 30 Years
Field Installation
Construction Management
Construction and Modernization Management
Construction and Modernization Management
National Modernization Director
ThyssenKrupp Elevator 7 Years
Vice President Modernization

Tommy joined Persohn/Hahn Associates, Inc., in January 2013, as an Associate.

 

Fred Barnes
Associate - Dallas Office

Contact: fredbarnes@phahou.com

Education:

Texas Christian University, Ft. Worth Texas
University of Texas, Arlington Texas

Fred Barnes 
Professional Associations:

Qualified Elevator Inspector NAESA #4578
Texas Department of License and Regulation Inspector #20079

 Experience:

Dover Elevator Company 31 Years
Elevator Installation Mechanic
Construction Superintendent
Construction Manager
Regional Operations Manager
ThyssenKrupp Elevator Company 11 Years
Modernization Sales Manager
Service Manager
Construction Manager

Fred joined Persohn/Hahn Associates, Inc., in February 2010, as an Associate.

 

George Hertensteiner
Associate – Oklahoma Office

Contact: georgeh@phahou.com

 Education:

B.S. Business Management Drexel University
M.B.A Drexel University

 
Experience: Otis Elevator Company/United Technologies 38 Years
Service, Modernization and New Equipment Sales
Branch Manager
District Service Manager
Manager of District Operations
National Marketing Manager Modernization
National Manager Non-Otis Equipment
Regional Modernization Manager
Regional Sales Manager
George joined Persohn/Hahn Associates, Inc., as an Associate in December 2008.

 

Will Bowden
Consultant – Houston Office

Education:  University of Houston Will Bowden 
Professional Associations: Qualified Elevator Inspector NAESA #C5352 OSHA Certified
Experience: Montgomery KONE Elevator Inc. 10 Years
Apprentice in Construction, Modernization and Service
Service Sales Consultant
Construction/Modernization Supervisor
Amtech Elevator Services 5 Years
Modernization Account Manager
Schindler Elevator Corporation 4 Years
Modernization Sales Specialist
Lerch Bates, Inc. 2 Years
Consultant
Will joined Persohn/Hahn Associates, Inc., in April 2015, as a Consultant.

 

Tommy M. Ford
Senior Consultant – Arizona Office

 Contact – tford@phahou.com

 Education:  Bakersfield Junior College
Glendale Junior College
University of Phoenix 
Tom Ford 
Professional Associations:  Qualified Elevator Inspector NAESA #C3282 
 Experience: Oliver & Williams Elevator
Field New Installation and Sales Manager
U.S. Elevator
Branch Manager and District Manager
Ford Elevator Products
President
Amtech Elevator
Modernization Sales
General Elevator
District Manager
Republic Elevator
Sales Manager
Dover and ThyssenKrupp Elevator Company
District Manager
Branch Manager
Lerch Bates Inc.
District Manager 
 Tommy joined Persohn/Hahn Associates, Inc., in October 2014, as a Senior Consultant. 

 

Tom Williams
Senior Consultant – Dallas Office

 Contact – twilliams@phahou.com

 

 Education:   B.S. University of New Haven, CT  Tom Williams
 Experience:

Otis Elevator Company 30 Years
Sales
General Management
Construction Superintendent

 
Tom joined Persohn/Hahn Associates, Inc., in June 2015, as a Senior Consultant.

Don Littrell
Associate - Tennessee Office

 Contact – dlitpha@gmail.com

 

 Education:   Miami University, Ohio  
 Experience:

Otis Elevator Company 35 Years
Sales and Service Representative
Manager Montgomery Area
Manager Knoxville Area
Regional Sales Manager
Manager of District Operations

 
Don joined Persohn/Hahn Associates, Inc., in October 1993, as an Associate.

 

logo2

Go to top