He was part of the school's senior team that played in the Dr Harty Cup competition.
[3] Heffernan played his club hurling and Gaelic football with Nenagh Éire Óg.
[5] Heffernan added a second Tipperary IFC medal to his collection in 1997 when Nenagh Éire Óg claimed the title after a 3-07 to 1-06 defeat of Carrick Swans in a final replay.
Heffernan's performances at inter-county level resulted in his selection for Munster in the Railway Cup campaigns of 1988 and 1989.
[13] He ended his inter-provincial career without success after Connacht beat Munster after extra-time in the 1989 final.