Yep, my aircon evaporator failed, blowing hot air, leaking gas.
Unfortunately it's buried in the dash and requires the entire dash removal to get at it.
It's looking like a hot summer here in Australia, so it was becoming an issue very quickly!
Unfortunatly for me, the right hand drive WK (aka WH) has it's own evaporator, because it needs to be a different shape to fit where your LHD steering column is
$840 farkhing dollars for the part, and another $1,100 to diagnose, remove/replace, and re-gas..... fark me, not cheap! Nearly $2k and I've got cold aircon again..... SO WORTH IT!