Your tubular, self-supporting, steel or wooden pool deserves water at 28 °C. A compact mini heat pump (3 to 7 kW) connects to the existing filtration pipe in a few minutes and heats small pools of 10 to 30 m³. Five times more economical than an electric heater, it extends your swimming season by several weeks.
The concrete benchmarks to heat a small pool well without oversizing or getting the connection wrong. Useful figures, no marketing.
Mini models are more than enough for an above-ground pool. At our Belgian latitudes, count on roughly 1 kW per 4 to 5 m³ of water to warm up in two to three days, with a cover on at night.
For 1 kWh of electricity, the pump delivers 4 to 5 kWh of heat by drawing warmth from the air. That is five times better than an electric heater, where 1 kWh paid gives 1 kWh of heat.
Standard Ø32/38 mm fittings and a bypass kit: the pump slots into the existing filtration circuit, after the filter. No heavy plumbing, no earthworks, start-up in under an hour.
The filtration pump supplied with your pool must provide a minimum flow through the exchanger. Most above-ground pool pumps are suitable; the bypass fine-tunes the water passage.
The sweet spot for compact models: round or oval tubular, self-supporting, steel or wooden garden pools. Above 30 m³, you move up to a more powerful range.
A simple reinforced socket or a dedicated single-phase circuit is enough. Low electrical draw (often 0.7 to 1.5 kW absorbed), compatible with a standard domestic installation.
* Indicative values for standard-range mini pool heat pumps. The real warm-up depends on the volume, sunshine, wind and use of a cover — specified during the survey.
No solution is perfect in every case. Here, honestly, is where the mini heat pump excels and where its limits need to be known.
It comes into its own whenever you want to heat a small garden pool with no building work. A few cases where it shines:
Inflatable and tubular pools of 10 to 20 m³ are the ideal target: the mini heat pump connects to the filter unit supplied with the pool and heats quickly.
For a semi-fixed above-ground pool of 20 to 30 m³, a compact heat pump keeps the water at 27–28 °C all summer without blowing up the electricity bill.
Want to swim from May right through to September despite cool air? The heat pump stabilises the temperature and makes the pool pay off across the whole fine season.
For an in-ground pool or a volume above 30 m³, look instead at the pool heat pump range. And to work out the exact output for your volume and your region, follow our sizing method.
The client barely swam two weeks a year in water at 19 °C. We installed a 5 kW mini heat pump connected plug & play to the existing filter unit, with a bypass kit and a bubble cover. The result: stable water at 28 °C from May to September, at a negligible electricity cost thanks to the COP of 4.8.
5.0/5 · 3verified reviews
« Châssis, panneaux et pompe à chaleur en une seule fois : on a eu un seul devis, un seul planning et zéro paperasse pour les primes. Le résultat est impeccable et notre facture d'énergie a chuté. On ne pensait pas que ce serait aussi simple. »
« Passage du mazout à une pompe à chaleur air-eau. Chantier propre, anciens radiateurs conservés. La maison est mieux chauffée pour bien moins cher. »
« PAC air-air réversible installée avant l'été. Confort été comme hiver, et le SAV répond vite. Très satisfait du suivi. »
The heat pump for an above-ground pool wins on budget and fitting simplicity. Compare it with the full range and the sizing method, then open the page that concerns you.
| Critère | Above-ground pool heat pumpVous êtes ici | Pool heat pump (range)Voir la gamme → | SizingVoir la gamme → |
|---|---|---|---|
| Target volume | 10–30 m³ | All volumes | Bespoke calculation |
| Output | 3–7 kW compact | 5 to 20 kW | Depends on the pool |
| Fitting | Plug & play | Depends on the model | Upfront advice |
| Indicative price | € — entry level | €€ to €€€ | Free (quote) |
| Type of pool | Above-ground | Above-ground & in-ground | All types |
| Efficiency (COP) | 4 to 5 | 4 to 6 | Optimised at calculation |
| Ideal for | Small pool, tight budget | Any pool project | Choosing the right output |
Our whole offer of pool heat pumps, from the small above-ground pool to large in-ground pools.
See the whole range →The method to calculate the exact output for your volume, your region and the temperature you want.
Calculate the output →Run your pool heat pump on your own solar electricity: warm swimming almost for free.
See the panels →Air-to-water, air-to-air, pool: understand the heat pump families and how they work before choosing.
Understand the types →Get a costed estimate for your above-ground pool, with the recommended model and the fitting budget included.
Request a quote →An overview of our heat pump solutions for the home and for the pool in Belgium.
Back to the heat pump guide →The price depends on the output, the pool volume and the connection kit. Compact models stay very affordable. Here are benchmarks for an installed mini heat pump.
See the complete pool heat pump range →* Indicative ranges for a mini above-ground pool heat pump supplied and connected, excluding specific configurations. Costed estimate during your free quote.
Yes, it is its natural home in fact. Compact models connect directly to the filter unit supplied with your tubular, self-supporting, steel or wooden pool. The filtration pump just needs to provide a minimum flow, which is the case with most off-the-shelf kits.
Plug & play: we slot the pump onto the filtration pipe, after the filter, using standard Ø32/38 mm fittings and a bypass kit. No earthworks or heavy plumbing. Start-up takes under an hour and the power supply is 230 V single-phase.
Count on roughly 1 kW of thermal output per 4 to 5 m³ of water under the Belgian climate. A 15 m³ pool needs only a 3 to 4 kW heat pump, while a 25 to 30 m³ pool calls for 5 to 7 kW. For a precise calculation for your region, see our sizing page.
No, that is the whole point. With a COP of 4 to 5, it delivers 4 to 5 kWh of heat for 1 kWh used. In peak season, the cost is around €0.30 a day, five times less than an electric heater. A solar installation makes it almost free.
Strongly recommended. Without a cover, the pool loses much of the heat gained during the day overnight, and the pump runs for nothing. A simple bubble cover retains the heat and reduces evaporation: it is the accessory that pays off your heat pump the most.
May to September really. The heat pump draws warmth from the air: its efficiency drops when the air turns cold. In the depths of a Belgian winter, it is not suitable. Its role is to extend the swimming season into the shoulder seasons, not to heat an outdoor pool in winter.
Recommended model for your pool, plug & play connection and a costed budget. Describe your pool in under a minute.