Hot Water Heat Pumps in Wantirna

Wantirna's rapid urbanisation came after the Knox shire was formed in 1963, so much of the housing dates from the decades that followed, and at the 2021 Census 90.3% of occupied dwellings were separate houses. Houses of that age usually have room outside for a heat pump and a switchboard that can take a new dedicated circuit, though some older boards need upgrading first.

Gas reaches streets in Wantirna, and where a house runs gas hot water, moving to a heat pump involves a new circuit plus capping the gas line. A heat pump uses much less power than an element tank, and a timer lets it run when rooftop solar is producing. The Scoresby Research Institute station, about 14 km away, averaged a July minimum of 5.9 °C, which most heat pumps handle well. With 19.6% of homes rented, landlords arrange some replacements. Wantirna sits at about 91 m in the AusNet Services network, which owns the meter.