For Hobbyists & Makers · Heat Pump COP
Heat Pump COP for an EV charger
Built for hobbyists & makers exploring it for fun. Play with real physics and math, no license and no setup — just open and tinker. Simulate an EV charger live below — adjust the inputs and watch it respond, right in your browser.
Heat Pump COPLive
more heat than the energy in
Controls
Presets
A heat pump does not make heat — it moves it, so it can deliver several kilowatts of warmth per kilowatt of electricity. The coefficient of performance is that ratio, capped by the Carnot limit T_hot/(T_hot − T_cold). The colder it gets outside, the harder the pump works and the lower the COP — but even at freezing it beats a resistance heater several times over.
Data Inspector
COP7.74
Carnot max COP15.5
Heat per kW power7.7 kW
vs resistance heater7.7× better
Governing equation
Reading this result: At 2°C the pump delivers about 7.7 kW of heat per kW of electricity — roughly 7.7× a resistance heater — because it moves heat rather than making it.
Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.
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Frequently asked questions
- Is this good for hobbyists & makers?
- Yes — this version of "Heat Pump COP for an EV charger" is framed for hobbyists & makers exploring it for fun. Play with real physics and math, no license and no setup — just open and tinker.
- Do I need to install anything?
- No. It runs in any modern browser, free, with no account required.