David J. Mueller, 81 of Penn Hills passed away on Saturday, July 2, 2022 at his home. Beloved Husband for 35 years of Elizabeth "Betsy" Mueller. Father of Mary Mueller, David (Laurie) Mueller, Kristen (James) Greiner. Step-Father of Eric (Dellaney) Snyder, and Brian (Allison) Snyder. Grandfather of Anna, Mary, Ethan, Samantha, and Maxwell. Brother of Arthur (Adella) Mueller, Gloria (John) O'Neill, Thomas (Cynthia) Mueller, Diane (Dave) Gaupp, Donna Mueller, Rita (Gerald) Kormick, and the late Norman (the late Lois) Mueller, Edmund Mueller, and Mary Grace Muha. He is also survived by his grand puppy, Diego. Dave was employed for 33 years by Westinghouse as the Director, Nuclear Operations Division, was an avid outdoorsman, enjoying camping and canoeing. Friends and relatives will be received on Wednesday, July 6, 2022 from 2-4 & 6-8 p.m. at the BURKET-TRUBY FUNERAL HOME CREMATION & ALTERNATIVE SERVICES INC. 421 Allegheny Ave. Oakmont. Mass of Christian Burial Thursday, July 7, 2022, 10:30 a.m. Holy Family Parish (St. Joseph Catholic Church, Verona). Interment will follow in St. Joseph Cemetery. If desired, contributions may be made in his name to the Little Sisters of the Poor, 1028 Benton Ave, Pittsburgh, PA 15212.