Heat pump vs solar pool heating
On-demand heat versus free-but-fickle sunshine: how the two heating routes compare, and when to combine them.
At a glance
| Heat pump | Solar absorbers | |
|---|---|---|
| Availability | On demand, any weather above ~5 °C | Only when the sun shines |
| Running cost | Electricity at 4–6× efficiency | Near zero |
| Upfront cost | Moderate | Moderate, needs 50–100% of pool area |
| Season stretch | Reliable spring–autumn | Helps shoulders, can't guarantee |
| Space needed | A washing-machine-sized unit | Large roof or ground area |
Our take
The heat pump is the backbone: it guarantees the season. Solar is the bonus that trims its bill when the sun cooperates. If you can only do one, do the heat pump — and put the solar money into a good cover first.
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