Wet floor passangersside Astra G coupé

Hi everyone,

I have a thing going on with my Astra G. When I was cleaning out the interior I noticed the floor was wet (passangersside, where the feet rest). I pressed my hand on the floor and it smelled like cooling liquid (that sweet, soury smell). I also noticed the level I had to refill the cooling liquid.

So I took away the center console so I could take a closer look on the heater and the O-rings. I've heard those two things are known to leak in the Astra G. I checked it with a cold...

Wet floor passangersside Astra G coupé