It was an end-to-end affair as both sides went for the match, the Wanderers especially going for it in the closing stages.
Heart were strong throughout the opening half and could well have opened the scoring in just the tenth minute as Golgol Mebrahtu got in front of his defender and volley Iain Ramsay's cross but it went over the crossbar.
Western Sydney were looking dangerous but should have done better with their chances as Aaron Mooy was put through twice but both times failed to score.
Western Sydney had a solid chance in the 35th minute as a corner allowed Iacopo La Rocca tohead at goal only for Aziz Behich to hack it off the line but Mark Bridge hit the rebound only for Behich to rescue his side again.
Melbourne Heart stunned responded just three minutes later, as they took the lead in bizarre fashion as David Williams' cross somehow beat Ante Covic and everyone else and hit the back of the net.
Just when it looked like Heart would go in to the break in front Western Sydney restored parity with a minute to play Aaron Mooy was left unmarked, turned, and shot powerfully, beating Andrew Redmayne and sending the sides to the break level.
The second half was almost all Wanderers as they dominated possession and barely gave Heart a sniff but the cellar dwellers held firm and kept the Premiers out with some stern defending.
With 18 minutes to play Heart fans had some joy as Harry Kewell came off the bench to play his first match in two months, and looked able to play.
Western Sydney could well have stolen all three points in the closing stages as Matthew Spiranovic hit a header that came back off the post and out to keep it 1-1 at full time.