David J. Zimmerman

David J. Zimmerman, a cherished husband, father, grandfather, and brother, passed away peacefully on October 23, 2024, at the age of 85 in Lake Forest, IL. Born on September 29, 1939, in Chicago, IL, to parents David M. Zimmerman and Dorothy Zimmerman, David's life was marked by love, laughter, and an unwavering dedication to his family, career and his community. David was raised in Chicago, IL and graduated from Kelvyn Park High School in the city. He furthered his education by attending Wright Junior College and the Coyne American Institute. His pursuit of knowledge set the foundation for what would become a remarkable career as a mechanical engineer at Johnson Controls. David's entrepreneurial spirit led him to acquire Narowetz Mechanical Contractors and Mid-Continental Heating & Air Conditioning Companies, showcasing his expertise and leadership for over six decades until his retirement. In his personal life, David was the beloved husband of Ann E. McMaster Zimmerman, with whom he shared many loving years. He was a devoted father to his sons David, Robert, Karen, and the late Michael Zimmerman; stepfather to Tate and Carl Peterson; grandfather to Andrew, Jake and Cole Zimmerman; step-grandchild Sydney Peterson and brother to Daniel Zimmerman. David's infectious laugh, humor, friendliness, and handy nature were the cornerstones of his personality, touching the lives of those around him. He was an active member of the US Olympic Committee fundraiser events, where his contributions and spirit of giving back were deeply appreciated. David was an avid Chicago Cubs fan and enjoyed traveling, fishing, and golf. Following his distinguished family history in the military, David served in the military as a National Guardsman. He and his wife Ann found great pleasure in spending winters at their home in Naples, Florida, where they created countless memories together. He also loved the community of Lake Forest and knew everyone in the neighborhood and known as someone who enjoyed life and lived to the fullest. David's life was a testament to his ability to balance a successful career with his interests and family life. He had a willingness to lend a hand wherever needed. David's life was a beautiful journey that has left an indelible mark on the hearts of his family, friends, and all who were fortunate enough to cross paths with him. A Celebration of Life will be held at 1pm on Saturday, November 23, 2024 at Donelli’s Pub & Eatery, 515 Rockland Road, Lake Bluff, Illinois 60044. Interment will be private. In lieu of flowers, the family requests contributions in the memory of David’s name may be made to the Wounded Warriors Project at https://www.woundedwarriorproject.org/. Make-A-Wish Foundation at https://wish.org/, American Cancer Society at https://www.cancer.org/ or a charity of your choice. For more information, contact Reuland & Turnbough Funeral Directors of Lake Forest at (847) 234-9649 or www.RTfunerals.com .

David J. Zimmerman

September 29, 1939 - October 23, 2024