Pool heat pump: is it worth it?

Updated in June 2026 · 5 min read

In Switzerland, without heating, a pool is really enjoyable two to three months a year. The heat pump changes the game: it is today the most widespread solution for heating a pool, and by far the most economical in use.

How does it work?

A pool heat pump captures the calories present in the outside air and transfers them to the water. It therefore does not "produce" the heat: it moves it. That is what makes it so efficient, for 1 kWh of electricity consumed, it often delivers 4 to 6 kWh of heat (this is the COP, or coefficient of performance).

How much extra swimming?

With a well-sized heat pump, you easily gain 2 to 4 months of swimming: you start earlier in spring and extend into autumn. Combined with a cover (slatted cover or tarpaulin), which limits heat loss at night, its efficiency climbs even higher.

Choosing the right one

• The sizing: the power must match the volume of the pool and the region. Undersized, the heat pump struggles; oversized, you pay for nothing.
• Inverter technology: it modulates its power, which makes it quieter and more economical.
• The noise level: important if the heat pump is close to the terrace or the neighbours.
• The operating range: some run even in cool weather, useful at the start and end of the season.

And the cost?

The price of a heat pump depends on its power and its technology. In use, its running cost remains moderate thanks to its excellent efficiency, especially with a cover. It is one of the best comfort/investment ratios for a pool. We advise you on the model suited to your pool.