Owning a swimming pool is one of life’s greatest luxuries for Perth families, offering fun, relaxation, and a place to unwind. But there’s one problem almost every pool owner faces: when the water gets too cold, swimming becomes uncomfortable and often impossible to enjoy year-round.
Unfortunately, even in Perth’s mild climate with hot summers and cooler winters, the water temperature can drop quickly, leaving your pool unused for months at a time.
This not only reduces the value of your investment but also the joy and health benefits of regular swimming. Many homeowners try solar or gas heating, but these options can be either unreliable in cloudy weather or too expensive to run consistently.
That’s where maintaining year-round comfort in your swimming pool with a pool heat pump becomes the smarter choice. Pool heat pumps are energy-efficient, environmentally friendly, and cost-effective.
They allow you to keep your pool at the perfect temperature throughout the year, often for as little as $2–$5 per day in Perth.
The result? More comfort, more swimming days, and a return on investment that pays itself back in just a few years.
What is a Pool Heat Pump
A pool heat pump is an energy-efficient device that uses electricity to draw heat from the surrounding air and transfer it into your pool water.
Unlike traditional heaters that burn gas or oil to generate heat, a heat pump requires only a small amount of electricity to power a compressor and fan, making it a sustainable and cost-effective choice for Perth pool owners.
How Does a Pool Heat Pump Work?
At its core, a pool heat pump works by capturing natural warmth from the air and transferring it into your pool water. To understand why it is so efficient, it helps to walk through each stage of the process in detail:
1. The Compressor: The Heart of a Pool Heat Pump
The compressor is often referred to as the “engine” of a pool heat pump because it plays the central role in creating the heat that will eventually warm your pool water.
Without the compressor, the system wouldn’t be able to elevate the temperature of the refrigerant gas, and the heat pump would not function effectively.
Here’s how the compressor works step by step:
- Draws in the Refrigerant Gas – The heat pump starts with refrigerant in a low-pressure, gaseous state. The compressor pulls this refrigerant into its chamber.
- Pressurizes the Refrigerant – By applying pressure, the compressor squeezes the refrigerant molecules closer together. This process raises both the pressure and the temperature of the refrigerant.
- Increases Energy Density – Once compressed, the refrigerant is much hotter and carries far more energy than before. This energy is what will later be released into the pool water via the heat exchanger.
- Pushes the Hot Gas Forward – The compressor then pumps the hot refrigerant gas into the heat exchanger, where it can begin transferring its stored heat to your pool water.
This stage is critical because it transforms the refrigerant from a warm gas into a highly pressurised, superheated gas capable of producing meaningful heating power.
Why the Compressor Matters
The compressor is essential for efficiency. The more effectively it compresses the refrigerant, the greater the heating potential of the system.
This is why modern inverter compressors are preferred; they can adjust their speed to match demand, which reduces energy waste and lowers operating costs.
For Perth homeowners, this means that the compressor doesn’t need to work at full capacity all the time. During warmer months, it may run at a lower speed to simply maintain comfortable pool temperatures. In cooler months, it can ramp up to ensure the water stays inviting.
This adaptability is one of the reasons inverter-based pool heat pumps achieve higher COP ratings (10–16) compared to older fixed-speed models.
2. The Fan: Driving Airflow for Heat Transfer
The fan in a pool heat pump may not look as impressive as the compressor, but it plays a crucial role in the heating process. Its main job is to move air through the system, ensuring that the evaporator coil has a constant supply of warm air to work with.
Without the fan, the refrigerant inside the coil could not absorb enough heat from the environment, and the entire system would stall.
How the Fan Works Step by Step
- Pulls in Ambient Air – The fan draws outdoor air into the heat pump housing. Even in Perth’s mild winters, there is still warmth in the air, and the fan makes sure this energy is directed into the system.
- Circulates Air Over the Evaporator Coil – Once inside, the fan forces the air to flow across the evaporator coil. This is where the refrigerant liquid absorbs heat. The more air that moves across the coil, the more energy the refrigerant can capture.
- Maintains a Steady Flow – To keep the process continuous, the fan operates in sync with the compressor. As long as the compressor is drawing in refrigerant, the fan ensures that fresh, heat-rich air is supplied to the coil.
- Supports Efficiency – By maintaining steady airflow, the fan prevents the system from overworking. This balance keeps the heat pump efficient and cost-effective.
Why the Fan is Essential
The fan isn’t just about moving air; it directly impacts how efficiently your heat pump can harvest energy from the environment. In climates like Perth, where winter nights can dip into single digits but daytime temperatures often remain mild, the fan ensures the system has constant access to usable heat energy.
Modern pool heat pumps use variable-speed fans that can adjust airflow depending on conditions.
3. The Evaporator Coil: Where Heat is Captured
The evaporator coil is one of the most important components of a pool heat pump because it’s the place where heat from the outside air is absorbed into the system. Think of it as the “collector”; it takes the warmth provided by the fan and begins the chemical process that powers the entire heating cycle.
Without the evaporator coil, the heat pump would have no way to capture energy from the air, making this stage essential to the system’s efficiency and performance.
How the Evaporator Coil Works Step by Step
- Exposure to Airflow – Once the fan has drawn in and circulated warm outside air, it directs that air over the evaporator coil.
- Contact with Refrigerant – Inside the coil is a special refrigerant liquid that is extremely sensitive to temperature changes.
- Heat Absorption – As the warm air passes over the coil, the refrigerant absorbs the air’s heat. Even when the air feels cool to us, the refrigerant can extract usable energy.
- Phase Change into Gas – The refrigerant doesn’t just warm up — it transforms. As it absorbs heat, it evaporates from a liquid into a gas. This change of state is what allows the refrigerant to carry energy through the rest of the system.
Why the Evaporator Coil is Essential
The evaporator coil is often considered the “gateway” of efficiency. The better it is at capturing heat from the air, the more effective and economical your heat pump will be.
In climates like Perth’s, where daytime temperatures are moderate even in winter, a high-quality coil can make all the difference in keeping your pool consistently warm.
Because the refrigerant only needs a small temperature difference to absorb heat, the coil can pull energy from the air even when the ambient temperature is as low as 7°C.
4. The Heat Exchanger: Transferring Energy to the Pool
After the refrigerant has been superheated by the compressor, it flows into the heat exchanger, the crucial stage where the energy it carries is transferred into your pool water.
You can think of the heat exchanger as the “bridge” between the internal system of the heat pump and the water circulating in your pool.
How the Heat Exchanger Works Step by Step
- Arrival of Superheated Gas – The refrigerant enters the heat exchanger at a very high temperature and pressure after being compressed.
- Heat Transfer Process – As the hot gas passes through the exchanger, the pool water circulates around or across the exchanger’s coils or tubes.
- Energy Transfer – The refrigerant releases its stored heat into the pool water without the two ever mixing.
- Cooling the Refrigerant – After giving up its energy, the refrigerant cools back into liquid form, ready to cycle back into the evaporator coil and begin the process again.
Why the Heat Exchanger Matters
The efficiency of the heat exchanger determines how effectively the system can deliver heat to your pool. If heat transfer is poor, the compressor and fan must work harder, which increases running costs.
Modern pool heat pumps often use titanium heat exchangers because titanium is highly resistant to corrosion from chlorine and salt, both common in Perth pools. This durability ensures the system maintains peak performance for many years.
5. The Pool Water: Delivering Comfort to Swimmers
The final stage of the cycle is where all the engineering and energy transfer result in something simple: warm, comfortable pool water.
As the water circulates through the heat exchanger, it steadily absorbs heat from the refrigerant gas before returning to your swimming pool.
How the Pool Water Heating Stage Works Step by Step
- Circulation Through the Pump – Your pool’s circulation pump continuously moves water through the heat exchanger.
- Absorption of Heat – As the water passes through, it absorbs the heat from the refrigerant gas.
- Return to the Pool – The now-warmed water is pushed back into the swimming pool, slowly increasing the overall water temperature.
- Continuous Cycle – This process repeats as long as the heat pump is running, ensuring the entire pool warms evenly over time.
Why This Stage Matters
The way heat is delivered to the water affects comfort, efficiency, and cost. Unlike gas heaters, which can cause rapid spikes in temperature, heat pumps warm water steadily and consistently. This means the pool remains at a stable, comfortable temperature, making it possible to swim any day of the year in Perth.
Why Choose a Heat Pump for Perth Pools?
Owning a pool in Perth is a great lifestyle choice, but keeping it warm year-round can be difficult.
Gas heaters are fast but expensive, and solar systems are eco-friendly but unreliable during cooler or cloudy days.
A pool heat pump offers the best balance, providing consistent heating, lower costs, and a sustainable way to enjoy your pool in every season.
1. Year-Round Comfort in Perth’s Mild Climate
Perth’s climate makes heat pumps ideal. They perform efficiently even when air temperatures drop to around 7°C, meaning you can swim comfortably throughout the year without relying on sunny conditions.
Benefits:
- Works efficiently in Perth’s mild winters
- Provides stable water temperature year-round
- Not dependent on the weather
2. Affordable Running Costs
Heat pumps are cost-effective to operate, making them a smarter choice compared to gas or solar. In Perth, most systems run for just $2–$5 per day.
Benefits:
- Lower daily operating cost
- Predictable energy bills
- Cheaper long-term than gas heaters
3. Energy Efficiency and Long-Term Savings
Heat pumps transfer heat instead of creating it, which makes them far more efficient. With COP ratings of 10–16, they deliver multiple units of heat for every unit of electricity consumed.
Benefits:
- Up to 80% more efficient than gas
- Significant annual energy savings
- Pays back investment within a few years
4. Reliable and Durable
Modern pool heat pumps are built to last with corrosion-resistant materials and reliable technology. With minimal maintenance, they can operate efficiently for many years.
Benefits:
- Average lifespan of 10–15 years
- Titanium heat exchangers resist pool chemicals
- Low maintenance requirements
5. Environmentally Friendly
For eco-conscious Perth families, heat pumps are a sustainable choice. They use less power and do not produce emissions, helping reduce your carbon footprint.
Benefits:
- No harmful emissions
- Uses eco-friendly refrigerants (R32)
- Supports sustainable living
6. Return on Investment
While the upfront cost is higher than other systems, the low running costs mean most families recover their investment within a few years. The ongoing savings and comfort make heat pumps the most cost-effective pool heating choice in Perth.
Key Factors to Consider
When choosing a heat pump, it’s important to match the unit to your pool’s needs. Factors like pool size, climate, and target temperature all play a role in finding the right fit.
- Pool size and volume
- Local climate conditions
- Desired water temperature
- Brand and model features
At 1PoolCare, we supply a wide range of reliable, energy-efficient pool heat pumps from leading brands. Our local, owner-operated technicians bring years of hands-on experience, ensuring every system is installed correctly and maintained with care. With our expertise, you can enjoy the comfort of a perfectly heated pool without the hassle or worry.
Don’t let the seasons limit your swimming. Contact us today or visit our website to explore our pool heat pump options and discover how we can keep your pool warm, efficient, and inviting all year round.
Maintenance Tips for Year-Round Efficiency
A pool heat pump is relatively low-maintenance, but a few regular checks and servicing tasks will keep it operating at peak efficiency.
Proper care helps reduce energy costs, extend the system’s lifespan, and ensure consistent heating all year.
1. Regular Filter Cleaning
Your pool’s filter directly affects how well the heat pump can circulate water. A clogged filter reduces efficiency and forces the system to work harder. Regular cleaning ensures smooth water flow and consistent heating.
Checklist:
- Clean or replace filters regularly
- Check for blockages
- Maintain steady water circulation
2. Coil and Airflow Maintenance
The evaporator coil and fan must have clear airflow to capture heat effectively. Dirt, dust, and leaves can build up around the coil, lowering efficiency. Keeping the area clean allows the system to run smoothly.
Checklist:
- Clear debris around the fan and coil
- Maintain at least 500 mm clearance
- Gently clean the coil when needed
3. Seasonal Inspection Checklist
At the start and end of each season, it’s smart to inspect your heat pump for any signs of wear or obstruction. Small problems caught early prevent bigger issues later.
Checklist:
- Remove debris and check airflow
- Inspect water connections for leaks
- Listen for unusual sounds
- Ensure electrical connections are safe
4. Annual Professional Servicing
While owner maintenance is important, professional servicing once a year ensures everything runs as it should. A qualified technician can test, fine-tune, and protect the system.
Checklist:
- Full system inspection
- Refrigerant level check
- Performance testing
- Warranty protection
Key Features to Look For in a Heat Pump
- Inverter technology – Adjusts power output to match demand, reducing energy use and improving efficiency.
- R32 refrigerant – Modern, eco-friendly refrigerant with lower global warming potential than older alternatives.
- Smart Wi-Fi control – Lets you set schedules and adjust temperatures remotely from your smartphone.
- Noise levels – Ideal units operate under 50 dB, ensuring quiet backyard comfort.
- Warranty and support – Multi-year coverage and access to local service for long-term peace of mind.
Top Pool Heat Pumps for Perth in 2025
Choosing the right pool heat pump can feel daunting with so many options available. To help you decide, we’ve reviewed three of the most popular and reliable models for Perth homeowners.
Each of these units offers a balance of efficiency, quiet operation, and long-term durability, making them ideal for local conditions.
1. Madimack Elite V3
The Madimack Elite V3 is one of the most efficient heat pumps available in Australia, making it an excellent choice for Perth homeowners. With a COP of up to 16.4, it offers unmatched energy savings.
Noise Level
The Elite V3 operates at around 38 decibels, which is quieter than most air conditioners. This makes it perfect for residential settings where noise control is important.
Features
- Titanium heat exchanger for durability
- Wi-Fi connectivity for remote control
- Advanced inverter technology for variable speed efficiency
- Ultra-quiet operation
Average Perth Running Cost
Most pools in Perth can be heated for just $2–$3 per day, making this one of the most cost-effective choices on the market.
2. AstralPool Viron Inverter
The AstralPool Viron Inverter is known for its durability and trusted performance, backed by one of Australia’s leading pool brands. It offers a COP of up to 12.5, giving it strong efficiency and reliability.
Noise Level
This model runs at about 45 decibels, quiet enough not to disturb family activities but slightly louder than the Elite V3.
Features
- Proven brand reputation in Australia
- Inverter technology for energy savings
- Robust build designed for outdoor conditions
- Consistent, dependable heating
Average Perth Running Cost
Homeowners can expect running costs of around $3–$4 per day, depending on pool size and temperature settings.
3. EvoHeat Force-i
The EvoHeat Force-i is a customer favourite thanks to its affordability and strong reviews. With a COP between 10 and 14, it provides reliable efficiency and comfort.
Noise Level
Operating at roughly 40 decibels, the Force-i is a quiet performer, suitable for suburban backyards.
Features
- Smart inverter technology for energy efficiency
- Quiet mode for minimal disruption
- Positive customer feedback for reliability
- Designed to suit both residential and larger pools
Average Perth Running Cost
Depending on usage and pool size, the EvoHeat Force-i costs $3–$5 per day to run in Perth conditions.
Installation & Sizing: Getting It Right in Perth
Choosing the right pool heat pump is not just about the brand or features; it’s about matching the unit to your pool’s size, usage, and location.
Proper sizing and correct installation ensure your system performs efficiently, keeps running costs low, and extends the lifespan of the equipment.
Sizing Guide: Matching Pool Volume to Capacity
The first step is to size the heat pump correctly. If the unit is too small, it will run constantly and struggle to maintain the desired temperature. If it’s too large, you may overspend on upfront costs without gaining efficiency.
General guideline:
- Small pools (up to 20,000L) – 9–13 kW unit
- Medium pools (20,000L to 50,000L) – 14–20 kW unit
- Large pools (50,000L to 75,000L) – 21–28 kW unit
- Extra-large pools (above 75,000L) – 30+ kW unit
For Perth, where winters are mild, you may not need as large a unit as in colder regions, but correct sizing is still crucial to avoid performance issues.
Placement Tips for Maximum Efficiency
Where you position your heat pump will directly affect its performance. Proper airflow and protection from environmental factors can make a significant difference in efficiency.
- Place in an open area with unrestricted airflow
- Keep at least 500mm clearance on all sides
- Avoid placing the unit near walls, fences, or landscaping that block air circulation
- Position away from windows or entertaining areas to reduce noise impact
- Provide some shade to prevent overheating in summer, but ensure it remains well-ventilated
Importance of Professional Installation
Even the best heat pump won’t perform properly if it’s not installed correctly. A professional installer ensures the system is connected to your pool’s circulation system efficiently, the electrical work is done safely, and the unit is positioned for long-term reliability.
For Perth homeowners, choosing a local specialist like 1PoolCare means your system is installed by technicians familiar with local conditions, pool sizes, and water chemistry. This expertise reduces the risk of problems and ensures you get the best performance from your investment.
Why professional installation matters:
- Correct electrical setup and safety compliance
- Proper water flow connection to maximize efficiency
- Warranty protection (most brands require professional installation)
- Expert advice tailored to Perth’s climate and pool designs
Cost of Running a Pool Heat Pump in Perth
One of the main reasons Perth homeowners choose heat pumps is their affordability. While upfront costs can be higher than solar or gas systems, the long-term operating expenses are much lower, making them the most cost-effective choice for year-round pool heating.
Daily and Seasonal Cost Breakdown
On average, running a modern inverter pool heat pump in Perth costs between $2 and $5 per day, depending on pool size, water volume, and target temperature. Over a six-month swimming season, this typically adds up to around $360–$900, which is significantly lower than gas heating.
ROI vs Gas and Solar Heating
- Gas Heating: Heats pools quickly but at a much higher daily cost, often 3–4 times more expensive than a heat pump. Gas is best for spas or occasional heating, not year-round use.
- Solar Heating: Very cheap to run once installed, but completely dependent on sunny weather. In winter or cloudy conditions, it often underperforms, leaving your pool too cold to enjoy.
- Heat Pumps: Provide reliable heating in all weather with far lower daily costs than gas. Over time, energy savings typically repay the initial investment within a few years.
How to Reduce Running Costs
Smart usage and minor adjustments can make a big difference in lowering daily costs:
- Use a pool cover to retain heat overnight and reduce evaporation losses.
- Schedule heating cycles for off-peak electricity times where possible.
- Choose inverter models that adjust output to demand and consume less energy than fixed-speed units.
- Maintain your system with regular servicing to keep it operating at peak efficiency.
Frequently Asked Questions
To Wrap Up
A pool heat pump is the most efficient way to enjoy your swimming pool year-round in Perth. With daily running costs as low as $2–$5, quiet operation, and a lifespan of up to 15 years, it offers comfort, savings, and sustainability that gas and solar systems can’t match.
At 1PoolCare, we provide quality heat pumps from leading brands, installed and maintained by local experts who understand Perth conditions. With our guidance, you’ll get the right system, professional installation and setup, and reliable pool servicing for years of worry-free swimming.
With over 20 years of industry experience, Adrian Mole is the founder of 1 Pool Care, a leading mobile pool service in Perth. Known for his expert knowledge and reliable service, Adrian delivers professional pool cleaning, equipment repairs, and water balancing across the metro area. Backed by SPASA accreditation, he’s committed to quality, convenience, and customer satisfaction.
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