On Behalf of everyone at Energy Efficiency Design and Development Inc., we want to thank you for trusting us to take care of your professional career development. We have tailored our training courses to give you hands on experience that you can directly apply to your current or future job. If you need training that is not offered currently on our website, please contact us and let us know what you need. Our knowledgeable instructors can create a program tailored directly to suit your needs.

Tammy Knierim

Tammy is co-founder, owner and CEO of Energy Efficiency Design & Development, Inc. She has spent most of her work life involved in various fields including payroll, accounting, insurance and banking. Beginning in 1999, she took the position of administrative assistant for DK Construction in Van Buren. After graduating high school, Tammy attended college at the University of Central Arkansas. She lives in Van Buren with her husband Doug.

Doug Knierim

Doug is co-founder, owner and COO of Energy Efficiency Design & Development. His vision was to establish a unique educational and training program for energy efficiency and weatherization industries.

In 1999, Doug co-founded Knierim Enterprises, Inc. dba DK Construction, holding licensing for General Contractor Commercial/Residential and Municipal/Utility.

In 2009, Doug became involved with utility companies to help develop and implement energy efficiency programs in Arkansas and Oklahoma, which continues today. Doug’s first business, DK Construction has worked exclusively for utility companies since 2009.

Doug attended Memphis State University and Arkansas State University where he studied business marketing and management.

Doug has worked in the construction industry for the past 35 years.

Rick Rosenthal

Rick is a partner and the Training Coordinator at Energy Efficiency Design & Development (E.E.D.D.).

Rick has been delivering training to adults for over twenty-five years.

Rick previously taught in the building science department at NorthWest Arkansas Community College. He was an adjunct trainer at Ozark Technical Community College and Pulaski Technical College

Rick teaches more than a dozen subjects including; Blower Door, Pressure Pan, CAZ, Duct Blaster, Building Science Basics, HVAC Basics, Introduction to Infrared, Zonal Pressure Diagnostics, ASHRAE 62.2.  Rick also teaches the Residential Energy Professional class.

Rick is an OSHA Outreach instructor for the 10 & 30 hour classes for the Construction and General Industries.

Rick has been interested in alternative energy and energy efficiency since he installed his first solar panels on his home in 1982.

Melissa Knierim

Melissa is the Office Manager for Energy Efficiency Design & Development, Inc. She handles end of work processing for many utility companies through E.E.D.D. Inc., edits the website, and provides transportation and catering for E.E.D.D. Inc.’s staff and students.

In 2010, Melissa was hired by Knierim Enterprises, Inc. dba DK Construction. She started as a retrofit installer for energy efficiency programs in Arkansas and Oklahoma, then became a certified home assessor. She has since become Office Manager for E.E.D.D. Inc.

Melissa graduated high school and has consistently worked in customer service industries. She has worked in the energy efficiency industry for 7 years.

Jim Corbell

Jim has been with a gas utility company for more than twenty-three years. He has been in the leak investigation department for more than nineteen years. Jim assists with our Leak Investigation Training.