Subscribe to our newsletter for $10 off your next order over $99!

Subscribe to our newsletter for $10 off your next order over $99!
Pool Shop Australia Pool Shop Australia
Apr 26, 2024

How Does a Pool Heat Pump Work in Winter?

Hello pool owners! With our beautiful but often unpredictable weather, many wonder how to keep their pools comfortable even in the cooler months. One effective solution is using a pool heat pump, but how does it work in winter? This guide will explore the mechanics of pool heat pumps and how they can keep your pool warm and inviting all year round, even during the winter.

What Is a Pool Heat Pump?

A pool heat pump operates similarly to an air conditioner but in reverse, efficiently maintaining pool temperature by extracting heat from the air and transferring it to the pool water.



Working Principle of a Pool Heat Pump in Winter

Heat Extraction

Even in winter, heat pumps are capable of extracting warmth from the air. They utilize a fan to draw in outside air, passing it over an evaporator coil that contains a cold refrigerant. The refrigerant absorbs the heat from the air, turning from a liquid into a gas.


The gaseous refrigerant is then compressed by the heat pump's compressor, which increases its temperature significantly.

Heat Transfer

This hot gas is then passed through a heat exchanger where the pool water is warmed as it circulates around the heated coils, transferring the heat from the refrigerant to the pool water.

The Cycle Repeats

Once the gas transfers its heat to the water, it cools down and condenses back into a liquid, ready to begin the cycle again.

Efficiency in Winter

While pool heat pumps are highly efficient, their effectiveness can depend on the ambient air temperature. Most heat pumps will operate efficiently down to temperatures around 7°C (45°F). Below this, their efficiency can decrease, and they may require more energy to maintain desired pool temperatures.

Advantages of Using a Pool Heat Pump in Winter

  • Energy Efficiency: Heat pumps use less energy compared to traditional gas heaters or electric heating systems.
  • Cost-Effective: Lower running costs than other heating methods due to better energy efficiency.
  • Extended Swimming Season: Allows you to enjoy your pool for longer periods throughout the year, even during the cooler months.




Considerations for Pool Owners

When choosing a heat pump for your pool, consider the typical winter temperatures in your area. In regions with mild winters, heat pumps provide an excellent year-round heating solution. In colder areas, additional measures like pool covers can help retain the heat and enhance the pump’s efficiency.

For pool owners looking to extend their swimming season, a pool heat pump is a great investment. Understanding how it works in winter helps in making informed decisions about pool maintenance and enjoying warm, comfortable swims even when it's cooler outside.

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.