Commercial Sales and Management

Doug Bomberger
Director of Commercial and Residential Construction

Having been a business owner, Doug brings a unique blend of experience. He’s been responsible for growth, leadership, and support. He also has sales and project management experience in the building material industry. As a civic-minded individual, Doug participated and provided a leadership role in numerous community organizations and committees.

Doug is a member of the Lititz Moravian Church, is a passionate hiker and bicyclist, is an ardent supporter of those who serve in our United States Military. He seeks daily to carry our the core values of JK Mechanical.


Fred Bentley
Commercial HVAC Estimator

Fred joined JK Mechanical in 2015 and brings years of experience in estimating and managing commercial HVAC projects. Having earned the Penn State Certification for Project Management, this resident of the Lancaster area for 54 years loves his family. He has been married for 33 years, has five children and 4 grandchildren.

Dave Harnish
Commercial Department Project Manager

The one-time Operations Manager for all of JK Mechanical, Dave has now turned his attention to Commercial HVAC Install and is the Project Manager for all Commercial HVAC construction projects. Dave has been with JK Mechanical for 28 years and when not at work, enjoys outdoor activities such as hiking, hunting, and mountain biking.

Stacie Drebenstedt
Commercial Administrative Assistant

Stacie has been a member of the team since mid-2014. Stacie holds a Legal Administrative Assistant Degree from the Consolidated School of Business. Born & raised in Lancaster County, Stacie is a proud Mom of two sons. She enjoys reading, international movies, a variety of music (including her collection of 78’s she plays on her beloved Victor Victrola up to whatever her children have introduced her to recently). Time spent with her family playing card/board games is her favorite. She also participates in the Hershey Walk to Defeat ALS in honor of her Step-Dad, Rick.

Chris Broyles
Commercial Service Manager

Chris lives in Middletown with his very active 4-year-old son, Aaron. When he isn’t running after his son, Chris develops BroylesLinux and enjoys playing video games.