Heckman's first eight years as a minister were spent in
Port Byron, New York. In January 1857 he responded to a missionary call and preached for four and a half years in both
Portage and
Janesville,
Wisconsin. He then took his preaching to
Indianapolis, Indiana, for three years. By 1870 he agreed to take over as president, taking over the presidency at a trying time for the college. During his nine years as president at Hanover, Heckman was known for erecting the President's house, securing $50,000 in funding from alumni contributions, and "laid foundations for the future growth and stability of the institution." Towards the end of his presidency the college came into financial crisis when a bad investment by the school's treasurer greatly reduced the college's income. Heckman, unable to provide for his family at a now reduced salary, resigned as president in 1879. Upon the conclusion of his duties in this office in 1889 he agreed to take the role as pastor in
Reading, Pennsylvania. ==Personal life==