John W. Heisler III (Jack)
February 01, 1958 - June 23, 2025
Visitation: Thursday & Friday 4-8 pm; Devlin Funeral Home of Cranberry Township
Service: Saturday, June 28, 2025, Noon; Divine Grace Parish, St. Ferdinand Church
John W. Heisler III (Jack), a cherished husband, devoted father, and respected business owner of Allegheny Refrigeration, passed away peacefully on June 23, 2025, at the age of 67, surrounded by his loving family. Born in Pittsburgh, Pennsylvania, he was the son of the late John W. Heisler II and DeSales Heisler. Jack leaves behind a legacy rooted in love, hard work, and an unwavering passion for life.
He is lovingly remembered by his wife, Susan Heisler, with whom he shared a joyful marriage since October 11, 1986. Together, they built a close-knit family that brought him immense pride and happiness. Jack is survived by his children: John W. Heisler IV (Donna), Lauren Ratkus (Sean), and Brooke Heisler (Dillon Miller). He was a proud and doting “Pap” to his beloved 5 grandsons: Jack, Max, Sam, Calvin, and Arthur—whose laughter and love were the center of his world.
Jack was not only a family man, but also a lifelong car enthusiast. He found joy in restoring and tinkering with his collection of classic cars, always appreciating the craftsmanship behind each engine. His garage was a place of both precision and passion—where every detail mattered and projects were pursued with care and pride.
As a business owner, Jack exemplified integrity, dedication, and excellence. He took great pride in his work, leading by example and always showing up for others. Outside of work, he enjoyed the quiet peace of fishing and hunting, and he treasured beach vacations with his family—moments that became cherished traditions filled with stories, laughter, and love.
He is also survived by his sister, Leslie, and brother-in-law, Jimmy May, who will continue to honor Jack’s spirit of warmth, loyalty, and strength.
Family and friends are welcome to pay their respects on Thursday and Friday from 4–8 PM at Devlin Funeral Home of Cranberry Township, 2678 Rochester Road, Cranberry Township. A Mass of Christian Burial will be celebrated on Saturday at Noon at Divine Grace Parish, St. Ferdinand Church, with entombment to follow at Resurrection Cemetery, Moon Township.
In lieu of flowers, memorial donations may be made Make-A-Wish, greater PA & WV.
Though he may be gone, Jack’s legacy lives on in the hands he held, the engines he brought back to life, and the family whose lives he so deeply shaped. He will be forever missed and lovingly remembered.
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Dear Sue and Family,
I was saddened to hear of the passing of Jack. Will be keeping your family in my thoughts.
Your California Cousin,
Joan Weiss
Living right across the street for many years…. We will certainly miss the friendly honking of the horn ….and the wave of the hand ….of Jack leaving in his work truck…… whenever we spoke it was always a kind word…. could not ask for a better Neighbor… wish we could’ve got to know him better….. but work just gets in the way …..rest in peace …our thoughts and prayers are with your family
Living across the street for many years… you observe you listen… and you learn …. and you become used to certain things…… there was always a friendly wave and honk of the horn ,as Jack would would be pulling out in his work truck…. Truly a good neighbor, you will be missed ..rest in peace. Our prayers and thoughts are with your family.
Family, friends and “The Ridge” has lost a wonderful neighbor. Im so very sorry he had to leave us all so soon. My sincerest sympathy Sue.
Lauren, Sean, Calvin, Arthur, Diggy/Sue and the entire Heisler Family,
Our deepest condolences to such a beautiful family.
Praying for strength and peace as you navigate through this time of loss.
Your Dad/Pap/Husbands love will continue to shine through all of his handsome grandchildren.
We are here for all of you and you will remain in our continued prayers.
All our love, Brad, Lauren, Parker and Lola Simmons
John & family-
We all know Jack was a one of a kind…a truly inspired soul who uplifted all the lives he touched. In all my years at ENP I’ve met many amazing people, and Jack would be one towards the top of that list! Please allow me to share two examples of how Jack blessed my life. I pray these examples, along with all the other kind words you’ll hear from others about him, bring you pride and comfort. You truly had an amazing man in your family.
When I started at ENP corporate… well, I was green to say the least. I was eager yet often “blonde” in my learning process. I often felt like an annoyance or a dumb woman when pursuing answers, information, next steps, etc. I wanted to give up so many times those first six months at the office. I lacked the professional presence those corporate folks like and surely felt like a fish out of water. It was Jack, who on a weekend emergency call strengthened my spirit. He encouraged my questions, explained mechanical and technical information to me in a way I could understand without making me feel like a dumbass. He laughed at my eccentric personality and encouraged me to keep on keepin’ on. I believe I would have quit ENP corporate a decade before I resigned if it wasn’t for Jack. He was my favorite vendor for how he treated me… not for the amazing work he did for our company (although heaven knows that was great. too) Jack always made me feel like I belonged in Facilities. Something I didn’t often receive from certain leaders. I often think of him when I feel like the odd duck out or “not enough.” He had a wonderful way of lifting people up. I pray John continues that personal touch to the business, should he be taking it over.
Several years later I found myself in a dire situation. My mother was in need of movement to a personal care home. Only I needed to pay $200 to get her evaluated and moved, per her insurance. That money was on top of paying bills she hadn’t paid, paying her landlord back rent, etc.. I did not have any more money to help her. AND the only person I could think to call to ask for help was Jack. I was awkward and embarrassed asking him to loan me $200. But I think I went to him because he felt like a father or mentor figure, and I felt safe with him. He agreed to lend me the money and expected to be paid back. Yet, I never squared the debt up before resigning. This failure ways heavy on my heart even years later. Please know he was generous to me in a difficult time. And he never hounded me or asked for that money back. Sometimes I’d be pained talking to him because I felt I had failed to repay the debt and keep his trust. He was a true gentleman who never treated me differently because of my failure. One day I’d like to send Mrs. Heisler that $200 back so that I know I honored Jack properly. One day…
I never said goodbye to Jack when I left Eat n’ Park. I was too ashamed of my alcoholism to say goodbye to anyone. Yet over these last 4 years being away from the office, I have thought of Jack often. I’ve missed his friendship, his ornery attitude, sarcastic humor, his work ethic, his deep cigarette smoker voice (which I also have). He impacted my life in such a way very few other work friends have. I adored Jack, like many did. I thank God I met him.
I pray you all find comfort, strength, hope, and peace in this time. I cannot send $200 but I can send prayers abundantly to exceed that amount. May God bless you all as you walk through this season of grief. May you celebrate having such a special person in your life and blood line.
Sue and Family,
We are so sorry for your loss of Jack. Thoughts and prayers are with you and your family.
Jack was a good man. Always nice to talk too. Heaven gained another angel. He will always be with you in your hearts.
Sorry for your loss i considered jack a friend and mentor he was always a phone call away to offer advise and support rest in peace
Dear Sue and family:
We are so sorry for Jack’s passing. We remember the last time we spent time with you and your beautiful family. He was so proud of his family and his grandsons! We send you all a big hug and may God give you comfort during these sad times.
Soooooooo sorry for your loss. Knew Jackie while I was younger
Dearest Sue, Lauren and family
We are extremely sad for you during this difficult time. We pray God helps you find strength and peace. God Bless you all. Love Jeff & Liz Hess
Aww Sue you have to know you have had more in your married years that people never can imagine such a wonderful loving husband and family xo Jack and you both grew such a Beautiful Family together and he was so Blessed to have you!Sue I am praying for all of you because I know how much Jack will be missed.You have got to be The Kindest Person on the Planet and you will keep him in everyone’s memory till everyone is together someday 🙏🙏🙏🙏God Bless you Sue,Rena
Dear Susie
We were so sorry to hear of your loss. We have such warm memories of Jack and all of your family. Please feel free to reach out if there is ever anything we can do. Keeping you and your family in our prayers.
So sorry to hear about Jackie as we knew him growing up playing basketball in his driveway. He was always friendly and took pride and was passionate with everything he did. May his memory be eternal.
We will always miss you ‘uncle Jack’. You always had a warm hug or a hearty handshake for all of us.
Love you always,
Beth,John,Sam & Kearstyn
Dear Susan & Family,
I am so terribly sorry for your loss. Jack was a wonderfully warm and kind person and welcoming beautiful soul. My son loved talking to him about his passion for cars. I watched how he loved his family especially the grandkids. May you find peace in all the wonderful memories you have of him. God bless you, Kathy and Matt
Always loved seeing Jack come to our shop. He always made me smile. So incredibly sorry for you all.