Jack Edward Cleaver was born November 24, 1944 in St. Louis, MO. He was the son of William Walter and Mary Lavern (nee Taylor) Cleaver. He passed on October 28, 2026 at Missouri Baptist Medical Center in St. Louis, MO at the age of 81 years. He is survived by his daughters, Kristine Ann (Tim) Helvey, Valles Mines, MO and Michelle Ann (Ken) Kemp, De Soto, MO; grandchildren, Justin (Trisha) Jeffries, Aaron Jeffries, Nick Jeffries, Tyler Kemp, Emma Kemp, Lindsey (Matt) Smith; great-grandchildren, Charlee, Cole, Zayn, Mila, Remy, and Lorelei. He is preceded in death by his parents; wife, Barbara Ann (nee Kujath) Cleaver; great-granddaughter, Jordan Jeffries; and one sister, Rose Richardson. As the founder and owner of an HVAC company for over 20 years, he has dedicated his career to building a successful business from the ground up. Through hard work, determination, and a commitment to quality service, he has established a company built on integrity, reliability, and customer satisfaction. His years of experience and hands on leadership reflect his passion for the HVAC industry and his dedication to the business he created. He also taught HVAC at Jefferson College, Ranken Technical College and North County Technical College. As an expression of sympathy memorial donations may be made to the American Heart Association, P.O. Box 840692 Dallas, TX 75284-0692.