Mooroolbark is one of the lower-density parts of Yarra Ranges at around 1734 people per square kilometre. Bigger footprints mean bigger heat loads and more zones to balance. At about 37 kilometres from the CBD, Mooroolbark is outer-ring. Supply capacity is generally healthier, so the constraint moves from the switchboard to the building fabric.
In Yarra Ranges, which covers Mooroolbark, the practical council issues on a heating and cooling job are plant noise at the boundary and, occasionally, an overlay that limits what can be fixed to a street-facing wall. Mooroolbark borders Chirnside Park and Croydon. If we are in one of them, we are minutes from you.
23059 residents at the 2021 census, about 13.3 square kilometres, postcode 3138: that is the scale of Mooroolbark within Yarra Ranges. Day to day we are across Mooroolbark and the streets either side of it: Chirnside Park, Croydon, Croydon North and Kilsyth. Same crew, same rates, same certificate at the end.
The run from Boronia to Mooroolbark is about 8.9 kilometres north. That is a normal day for us, not a special trip. The suburb has Mooroolbark railway station, and in Melbourne a station is usually the oldest point of a suburb with newer housing spreading out from it.