Sizing a Pool Heat Pump for Year-Round Swimming in the UAE
A pool that only works for six months of the year is a pool working at half its value. In the UAE, the goal is straightforward: comfortable water from the peak of summer through the cooler December-to-February stretch, without an energy bill that makes you wince. Getting there starts with sizing the heat pump correctly. Undersize it and the water never quite reaches temperature on cold nights; oversize it and you have paid for capacity you rarely use. Here is how to get it right.
Why an Inverter Heat Pump
A heat pump does not generate heat the way an element does. It moves heat from the surrounding air into the pool water, which is why it delivers far more energy than it consumes. The key measure is the Coefficient of Performance (COP): a unit running at a COP of 6 produces six kilowatts of heating for every kilowatt of electricity drawn. In Gulf conditions, where ambient air is warm for most of the year, heat pumps operate in their efficient range far more often than they would in a European climate.
Our Aquora ThermaCore inverter range takes this further. A fixed-speed unit runs flat out or not at all; an inverter compressor modulates its output, ramping down to hold a steady temperature once the pool is warm. That means quieter operation, less wear, and a meaningful drop in running cost over a full season. As a rule, inverter models hold their best COP figures across a wider band of conditions than fixed-speed equivalents.
The Numbers That Drive Sizing
Three factors set the capacity you need:
- Pool volume — the body of water you are bringing up to temperature. A typical 8 × 4 m villa pool at 1.5 m average depth holds roughly 48,000 litres.
- Surface area — the larger and more important figure for ongoing heat loss. Over 90% of a pool's heat escapes from the surface through evaporation, so a wide, shallow pool loses more than its volume alone suggests.
- Target temperature — most swimmers are comfortable at 28–30°C. Each additional degree raises both the initial heat-up demand and the standing energy cost.
The greater the gap between your target temperature and the night-time air, the harder the unit works. This is why winter, not summer, dictates the size you buy.
Sizing for UAE Winters
Summer needs almost no heating; the challenge is December to February, when night air can fall to 14–16°C and an unheated pool drifts to the low twenties. Size the unit to hold your target temperature on a cold winter night, and it will cope effortlessly the rest of the year.
For a standard uncovered villa pool of around 48,000 litres aiming for 29°C, a 13–17 kW inverter unit is typically the right window. Larger or fully exposed pools, or owners wanting reliable heat in January, should plan toward the upper end.
The Single Biggest Efficiency Gain
No heat pump is efficient if the heat escapes overnight. A pool cover is the most effective upgrade you can make: by cutting evaporation it can reduce heat loss by 50–70%, letting a smaller unit do the same job and slashing running hours. Pair a correctly sized Aquora inverter with a quality cover and year-round swimming becomes genuinely economical.
Talk to Aquora
Every pool is different. Share your dimensions, location and how you like your water, and our team will recommend the precise unit to keep you swimming all twelve months — efficiently.