ES2's owners have long been proponents of sustainable energy management initiatives.


ES2 is led by Bill Kinser, a licensed P.E. with a degree in Mechanical Engineering from the University of Oklahoma. Bill has been in the building automation and commissioning business since 1990. He is a NEBB Certified Professional in four disciplines – Testing Adjusting and Balancing; Whole Building Technical Commissioning; Sound Measurement, and Vibration Measurement.


Michael Halcomb has been in the HVAC industry since 1995. He is a NEBB Certified Professional in Whole Building Systems Technical Commissioning and Testing Adjusting and Balancing. He holds a degree in Heating, Ventilation, and Air Conditioning and Refrigeration Technology from the Oklahoma State University Institute of Technology.


Justin Stonehocker carries multiple certifications as a BAS Controls Engineer/Technician under several DDC platforms. He received his BA from the University of Central Oklahoma in 1997.

Bill Kinser
OKC Branch President
Michael Halcomb
Justin Stonehocker
Tulsa Branch President

Our Team Leaders


Rhonda Terry

Corporate Administrator

Brian Glass

TAB Department Head

Heather Hussey

Creative Director

Jesse Gentling

Director of Sales

Claire Farr

Director of Operations

Arthur Adkison

BAS Department Head

Tim Sheehan

Mechanical Department Head



We serve our community, customers, and colleagues with the highest standards.


We continuously improve and develop innovative solutions.


We optimize the efficient use of resources in every opportunity. 


We operate with integrity by doing what is right, honest, and fair.


We partner with our customers and employees to empower them to grow and prosper.