Harenc played mostly for amateur teams, including the Gentlemen of Kent and the Gentlemen of England, although he made two appearances for Kent in 1840 before the formation of the first Kent County Cricket Club. Harenc is not recorded as having played cricket at school, but was an effective bowler in amateur cricket. Whilst serving in the Army he played for Canada against the United States at Montreal in 1845. His brothers, Charles, Henry and Edward also played, Charles for Kent teams.