How the Pool Heating Calculator Works

The calculator estimates how much thermal energy is required to heat your pool water from its estimated current temperature to your desired swimming temperature.

It considers:

• Pool volume in litres
• Postcode and climate zone
• Estimated current water temperature
• Desired pool temperature
• Swim season
• Pool cover use
• Heat pump output required
• 10–12 hour daily run time

The calculator then recommends an Orilux heat pump model designed to achieve the selected temperature within a practical heating window.

Why Pool Volume Matters

Pool volume is one of the biggest factors in heat pump sizing. A larger pool requires more energy to heat than a smaller pool, even when the desired temperature is the same.

As a general rule, the more litres of water in your pool, the larger the heat pump required to heat it efficiently.

Why Postcode Matters

Pool heat pumps use heat from the surrounding air to warm your pool water. This means performance can vary depending on your location.

A pool in Victoria, Tasmania or cooler inland areas may require a larger heat pump than a similar pool in Queensland or northern New South Wales. That’s why the calculator uses your postcode to estimate climate conditions and adjust the heat pump recommendation.

Why Swim Season Matters

The right heat pump size also depends on how you plan to use your pool.

For summer-only swimming, a smaller heat pump may be suitable because the water and air temperatures are naturally warmer.

For extended season swimming through spring and autumn, a larger heat pump is usually recommended.

For year-round pool heating, especially in cooler climates, correct sizing becomes even more important.

Why a Pool Cover Makes a Big Difference

A pool cover can significantly reduce heat loss, especially overnight. Without a cover, pools lose heat more quickly through evaporation and exposure to wind.

Using a pool cover can help:

• reduce heat loss
• improve heating efficiency
• shorten heating time
• reduce running costs
• help maintain a more stable water temperature

For best performance, we recommend using a pool cover whenever possible.

Recommended Orilux Heat Pump Models

The calculator may recommend one of the following Orilux models depending on your pool size and conditions:

• Orilux OX26 11.5kW
• Orilux OX26 17kW
• Orilux OX26 19kW
• Orilux OX26 22kW
• Orilux OX26 26kW
• Orilux OX26 32kW

Each model is selected based on the estimated heat required and the target of achieving your desired pool temperature within a practical timeframe.

Designed for Australian Conditions

Orilux heat pumps are designed for Australian pool owners who want efficient, quiet and reliable pool heating.

The Orilux OX26 range features advanced R290 technology, inverter performance and premium thermal efficiency, making it ideal for homeowners looking to extend their swim season while keeping energy use under control.

Get a Personalised Pool Heating Recommendation

This calculator provides a helpful estimate, but every pool is different. Factors such as wind exposure, plumbing design, shading, pool surface area, installation location and daily usage can all affect performance.

For the most accurate recommendation, speak with an Orilux expert.

Get My Personalised Recommendation

FAQ

What size heat pump do I need for my pool?

The right size depends on your pool volume, location, desired temperature, pool cover use and swim season. Use the calculator above to estimate the best Orilux model for your pool.

Is a bigger pool heat pump better?

A larger heat pump can heat your pool faster and may perform better in cooler climates. However, the best option is the right-sized model for your pool and usage.

How long does it take to heat a pool?

Heating time depends on pool size, starting water temperature, target temperature, heat pump size and weather conditions. This calculator estimates heating time based on 10–12 hours of daily runtime.

Do I need a pool cover?

A pool cover is strongly recommended. It helps reduce heat loss, improve efficiency and maintain temperature overnight.

Can I heat my pool year-round?

Yes, but year-round heating usually requires a larger heat pump, especially in cooler climates such as Victoria, Tasmania, ACT and inland areas.

What temperature should I heat my pool to?

Most pool owners choose around 26°C to 28°C for comfortable swimming. Higher temperatures require more energy and longer heating times.