On 5 September 2010, Heffernan was a non-playing substitute as Tipperary won their 26th All Ireland title, beating reigning champions Killkenny by 4–17 to 1–18 in the final, preventing Kilkenny from achieving an historic 5-in-a-row, it was Heffernan's first All-Ireland winners medal.[3] Six day's later on 11 September 2010, Tipperary clinched the All Ireland Under-21 title by defeating Galway by 5–22 to 0–12 at Semple Stadium, with Heffernan starting at corner forward scoring two points.[4]
In 2012, Heffernan was part of the Tipperary team that won the Munster Intermediate Hurling Championship and the All-Ireland Intermediate Hurling Championship.[5][6][7]
He started the All-Ireland final at full forward and scored one goal and four points in the 3–13 to 1–17 victory against Kilkenny at Semple Stadium.[8]
Heffernan created a piece of history by adding the All-Ireland Intermediate medal (2012) to the Minor (2006, 2007), Under-21 (2010) and Senior (2010) titles that he had already won.[9]
