Thanks all for the responses. Plenty to go on with from here...
In terms of tap water temp, its pretty warm at the moment. Dont know exactly, but its 'luke warm' to the touch (so guessing low/mid 20's...?)
As far as under the house goes...Perth dwellings are mostly double brick on concrete slabs, so there is no under the house, unless your a lucky bugger with a basement. Which im not.
Anyway, thanks again..will give the bath a crack this weekend and keep eyes peeled for 2nd-hand fridge... :icon_cheers:
If you find a second hand fridge and dont think the missus will let you buy it just give your mate $100 and he can "buy" it and then "give" it to you because "he doesn't have room for it"..... Just need to work out your plan of attack before telling the missus... :unsure: