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Mar 28, 2024

How Does a Pool Heat Pump Work? Understanding the Basics

Hello, pool owners! With the varied climate of Australia, keeping your pool at a comfortable temperature year-round can be quite the task. That's where a pool heat pump comes into play. But how does this clever device keep your water pleasantly warm, even when the Aussie weather decides to be a bit unpredictable? Let's dive into the mechanics of a pool heat pump and how it can be your pool's best mate through all seasons.

The Science Behind Pool Heat Pumps

Pool heat pumps operate on a simple yet effective principle known as the refrigeration cycle. But instead of cooling, they use the cycle to heat your pool. Here's a step-by-step breakdown of the process:

1. Absorbing Heat

The heat pump draws in outside air through its fan, passing it over an evaporator coil that contains a refrigerant. This refrigerant absorbs the heat from the air, turning from a liquid into a gas.

2. Compressing the Refrigerant

This warm gaseous refrigerant then moves to the compressor, where it's pressurised, increasing its temperature significantly.

Madimack Elite Max

3. Heating the Pool Water

Next, the hot gas flows through the heat exchanger. Pool water is pumped through the heat exchanger, where it absorbs the heat from the gas. This process cools the gas down, turning it back into a liquid.

4. Repeating the Cycle

The cooled liquid refrigerant returns to the evaporator coil to absorb more heat from the outside air, and the cycle begins anew.

Why Choose a Pool Heat Pump?


Heat pumps are renowned for their efficiency. They use a small amount of electricity to transfer heat, rather than generating it directly. This can be a boon for Aussie residents mindful of their energy consumption and bills.


Unlike solar pool heaters that rely on sunny days, heat pumps can maintain your desired pool temperature efficiently, regardless of the weather—perfect for the unpredictable Aussie climate.


With proper maintenance, a pool heat pump can last you a good 10 to 15 years, making it a solid investment for your home in Australia.

Madimack Pool Eclipse Series (Top Discharge)

Installation and Maintenance

Choosing the right size and model is crucial and might require a chat with a local expert. Regular maintenance, such as cleaning the air filter and ensuring adequate airflow around the unit, will keep your heat pump running smoothly for years.

A pool heat pump is a fantastic investment for any Aussie pool owner looking to enjoy their backyard oasis all year round. By harnessing the ambient air temperature and using a bit of science, it efficiently warms your pool, ensuring comfort, cost savings, and eco-friendliness. Ready to take the plunge into warmer waters? A pool heat pump might just be your pool's new best mate.

Pentair MasterTemp 125HD LPG

About Pool Shop

Pool Shop is one of Australia's leading suppliers of pool and spa products, offering a wide range of essentials like cleaners, pumps, lights, chlorinators, filters, chemicals, spare parts, and more. We stock the highest quality products as authorised sellers of leading brands such as Zodiac, Astral Pool, Maytronics, Hayward, Madimack, Polaris, Pentair Onga and more. With a price match guarantee and fast delivery, we ensure a seamless shopping experience.

Visit our shop in Unanderra near Wollongong for personalised service and expert advice or order online.

Contact us on or call 02 9137 8914.