August 27Aug 27 I have created a Heat Pump vs Electric Geyser Calculator.The calculator sizes the appliance swap itself, the tank and recovery rate you actually need, then shows a realistic running-cost payback next to the nameplate COP a quote leans on. A heat pump recovers slower than a 3 kW element, so an undersized tank quietly falls back on its electric backup during the morning peak. The tool flags that. The single biggest lever is whether your geyser is already dead: if it is, you are only staking the extra over a same-size electric replacement; if it still works, the full installed cost is on the heat pump, because a working geyser has no resale value. Starting prices are real 2026 retail figures from Builders. Overwrite them with your own quote.Anyone interested can have a look here:Heat Pump vs Electric Geyser Calculator Edited August 27Aug 27 by TheOracle
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