Hawthorn, Sunday 16 August 2026. The system charged on cheap midday energy, switched the compressor off at 1:45pm, and the house was still 21.1°C at 9pm.
Room temperatureCompressor currentEvening peak, 5 to 9pm
12:00 amOvernight. Nothing runs; the house drifts down slowly on heat stored the day before.
Drag
And it repeats, evening after evening.
Each dot is one evening. Green: the heat pump never ran between 5pm and 9pm.
0of the last 63 evenings with the heat pump off right through the 5pm to 9pm peak, measured across Hawthorn and Gippsland.
Redrawn from unit telemetry at 15-minute resolution: 2.6 compressor-hours that day against a 3.8-hour average. Storage carries the house through the evening instead of the heat pump.