Chris Leaman
Owner / President

headshot-chris-leamanAs a second-generation owner, Chris leads the organization and functions as its chief financial officer. Prior to joining the family business in 2004, Chris spent ten years with Tyco Electronics in a variety of product design and business development roles. He has a Mechanical Engineering degree from Grove City College and an MBA from J.L. Kellogg Graduate School of Management, Northwestern University. He has a passion for excellence and is thankful for the opportunity he has as a business owner to have a positive impact on our people and our community.

Outside of the office, Chris is an active member of Grace Church at Willow Valley. He lives in West Lampeter Township with his wife, Alison, and two daughters, Anne and Laura. Being a husband and father keeps him very busy, but in his free time, Chris enjoys traveling (especially to new destinations with his wife), working on projects around his house and in his yard, playing games with his family, walking in the woods with his two golden retrievers and playing golf.

Ken Northeimer
Service Manager

headshot-ken-northeimerKen leads the JK team of service technicians, and is responsible for managing all aspects of our service operations, as well as sales and business development. Ken started in the industry as a teenager working summers and remains as passionate and committed today as he was then.

Ken is a father of two, and enjoys golf, movies, music, and auctions. Ken wishes he had more free time to work in his woodshop, spoil his grandchildren, and take more trips to Lancaster Central Market with his wife, Doris.

Tim Heitz
Sales Manager


Tim brings a unique blend of experience to our team, overseeing the sales divisions, marketing efforts and serving on the strategic leadership team. A graduate of Grove City College with a Masters of Divinity degree from Wesley Seminary in Washington DC, Tim applies extensive sales leadership and ministry to his role as Sales Manager.

Prior to joining JK, Tim provided leadership to the advancement efforts at Lancaster Bible College and served as president of Superior Walls of America. In addition to his sales experience, Tim’s faith led him to The United Methodist Church where he served as full-time pastor for 19 years and an additional four years as a part-time pastor.

When not at work, Tim and his wife of more than 30 years, Julie, enjoy camping in their pop-up camper and spending time with their parents, three children and their first grandchild. Tim and Julie are especially proud of their youngest child, who serves in the Marine Corps. When spare time permits, home projects and music are Tim’s relaxation methods.

Tim and Julie attend Ranck’s United Methodist Church located in their hometown of New Holland.

Janet Long
Office Manager

headshot-janet-longJanet is responsible for office operation and management and is a stickler for processes and procedures. With more than 25 years of professional experience in accounting, and business management, Janet brings the knowledge and administrative structure to the JK Team. As part of her role, Janet manages all aspects of accounts payable, accounts receivable, payroll and human resources.

Janet is passionate about her husband, children and is an absolute die-hard Phillies fan. She is member of Grace Church at Willow Valley, where she enjoys singing with the worship team and serving on the Global Outreach Team. Janet also serves on the board of Children’s Fellowship of India. In her free time she enjoys cheering on her children in their sports endeavors and watching her beloved Phil’s.

Ronda Chaney
Client Relations Manager

headshot-ronda-chaneyA people person, Ronda’s goal is to make sure every JK client has a good experience. As Client Relations Manager, Ronda develops and implements strategies to better connect the JK team with its clients. Over the years, Ronda has had the opportunity to experience many aspects of business by working with start-up businesses, as well as well-established companies with an annual revenue over $12 million. These opportunities provided her valuable experience in management, leadership, human resource, client relations, coaching/mentoring, marketing/advertising and general administration. Ronda has accreditations in several professional counseling training programs and leadership training.

Ronda considers her greatest accomplishments to be her 20-year marriage to her husband, Tom and raising their two precious twin sons, Thomas and William. In her free time you may catch Ronda at a college baseball game watching either son pitch, running, or relaxing with her close-knit family. She attends Victory Church of Lancaster, and loves caring for others.

Michael S. Diehl Sr.
Electrical Department Manager

headshot-mike-diehlMike is responsible for both sales and project management of JK Electrical. With more than 24 years in commercial, residential and industrial electric, he has the knowledge to successfully manage a project of any size. Starting as an apprentice in 1989, Mike advanced to foreman and then into management in 2006. He holds a Maryland Master Electrical License and a 3-year degree in Pastoral Studies.

Mike credits his education in helping him develop the people skills necessary for good client and employee relationships. Mike lives near Lititz and enjoys spending time with his family, including his three children and two grandsons. When not doting on his children and grandsons, Mike can be found hunting, fishing or enjoying the outdoors.

Casey Blackwell
Plumbing Manager

Casey Blackwell, Plumbing ManagerCasey has over 12 years’ experience in the plumbing field, ranging from residential service and new construction to commercial construction. He learned the trade through hands on experience as well as through ABC’s apprenticeship program. He owned and operated Blackwell Mechanical for over 6 years before heading up the JK Plumbing team. He takes pride in his work and strives to do every job to the best of his ability. His responsibilities at JK Plumbing include overseeing all aspects of the Plumbing department including service, new construction and project management.

Casey has been married to his beautiful wife Emily for 8 years. They reside in New Holland with their two daughters, Lilly and Addy. Casey is an avid hunter who loves the outdoors and spending time with his family at their cabin. When not in the woods, he enjoys watching football and baseball. His family also attends Mt. Zion UMC where he serves as the Trustee Chairperson and coaches the churches slow-pitch softball team. To unwind, he enjoys working in the lawn and around his home.


Sales & Comfort Consultants

Robert Clement
Add on Replacement Project Manager

headshot-robert-clementRob is valued member of the family at JK Mechanical utilizing his vast experience in the field of HVAC to manage our team members in the execution of HVAC replacements and additions. Rob has more than a decade of “in the field” experience that allows him to ensure our customers have an exceptional JK experience.

Outside the office, Rob enjoys spending time with his family, including his wife, Jamie and their two little girls. He enjoys taking hikes in the beautiful Pennsylvania countryside, as well as being an avid hunter.

Matthew Kemper
Comfort Consultant

headshot-matt-kemperAs a sales consultant, Matt specializes in designing heating and air conditioning systems that are unique to each of our client’s specific needs. With more than 13 years of heating and air conditioning experience Matt can provide a wide variety of smart heating and cooling solutions.

Matt lives in Drumore with his wife, Angela, and their four children, Gwenyth, Noah, Ellenora, and Lyla. As a family they enjoy vacations, watching movies, trips to the park, and attending church. Matt’s other interests include fishing, hunting, and enjoying the outdoors.

Dan Senft
Comfort Consultant

Dan SenftDan has over 15 years of experience in various residential heating and cooling designs and solutions. In those 15 years, Dan has helped thousands of clients find the best choice for their home’s comfort and energy saving needs. Dan likes to approach each customer request and find the correct solution as if it were his own home.

Dan lives with his wife, Chrissy, and their two English bulldogs in York. Dan has two sons and a daughter. Dan enjoys running, grilling, and relaxing outside with family and friends.

Chris Thomas
Comfort Consultant

Chris ThomasAs a sales consultant for HVAC additions and renovation projects, HVAC replacements and solar installations, Chris understands smart energy solutions. With more than 18 years of experience, radiant floor heat and all types of hot water heat are his specialty. After many years in the industry, Chris still enjoys finding a solution for even the most complex project. Chris is a graduate of Lancaster Bible College.

Chris lives in Conestoga with his wife, Hannah and their five sons. As a family they enjoy hiking, swimming and camping trips. They are active members of Harvest Bible Chapel Lancaster where Chris serves as a small group leader.

Rob Dippner
Solar and Electrical Sales Consultant

Rob Dippner, Solar and Electrical Sales Consultant for JK MechanicalRob has over 15 years of experience in the electrical, plumbing and HVAC fields in installation and management of projects. He brings leadership and excitement to the solar, generator and electrical sales team.

Rob lives in Lancaster, PA in the Conestoga Valley school district. Outside of the office, Rob enjoys his family and time spent together. His wife Kristina, sons Hayden and Jackson, and daughter Lea are huge part of his everyday life. Rob loves coaching his son’s sports teams in football, basketball, and baseball. He also enjoys hunting.


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