Ah cool setup. I once visited a quite small Airbnb cottage that had 2 Sandens also but I think they may have been separated for HWS and a very small hydronic setup.
Are the LGs on the Australian market yet? There’s so many Euro heat pump models we don’t get like the small Daikin UK air to water heat pumps.
We were considering a hydronic setup but wanted cooling as well, so are installing a Daikin multi split system with 3 built-in bulkhead indoor units plus a very small ducted system for 3 other rooms.
Good luck with your re-design

