We are about to undertake an alterations and additions of our 1926 house in Adelaide and are very interested in having hydronic heating / solar evacuated tubes system throughout. We're still in the middle of trying to research more about this vs ducted reverse cycle and have yet to seek quotes.
As such, would love to hear from those who have installed one what your thoughts are. Is worth it? What are the pros and cons? What did you do for cooling (we're thinking ceiling fans throughout the house and a split system unit in 2 of the living areas)? And if you're from Adelaide, who did you go with?