Best Pool Heat Pump for Sydney and Brisbane
Same coast, two different jobs. Brisbane needs half the heat pump Sydney does for the same pool and the same season.
The best pool heat pump for most Sydney pools is the Fairland AquaX Essential 17.1kW at $4,607, and the best for most Brisbane pools is the smaller Fairland AquaX Essential 13.8kW at $3,873. Both are full inverter units with Wi-Fi, cooling mode and 5 years of warranty on the heat exchanger, compressor and parts, and both run on a normal single phase supply.
The gap comes down to October. An October night in Brisbane averages about 21.6°C. Sydney averages about 18.5°C. Three degrees of air is the difference between a 9 kW job and a 14 kW job on a 40,000 litre pool. Year round swimming changes the answer again, so the shortlist below covers every common case with real prices.
Want your exact size? Our pool heat pump sizing calculator takes your postcode, so it knows the difference between Bondi, Penrith and the Gold Coast, and works out the kW your pool needs with and without a cover.
Short on time? See the Fairland 17.1kW for Sydney, the Fairland 13.8kW for Brisbane, the budget Midea 20kW, or browse every pool heat pump we sell.
The Sydney and Brisbane shortlist at a glance
Each pick below is a live Waternex pool heat pump, ranked for Sydney and Brisbane on output in cooler air, noise, price and fit.
| Pick | Best for | Output at 26°C air | Output at 15°C air | Power | Price NSW / QLD |
|---|---|---|---|---|---|
| Fairland AquaX Essential 17.1kW | Best for Sydney, 40,000L uncovered | 17.1 kW | 11.8 kW | Single phase, hardwired | $4,607 / $4,774 |
| Fairland AquaX Essential 13.8kW | Best for Brisbane, covered Sydney pools | 13.8 kW | 9.8 kW | Single phase, 15A plug | $3,706 / $3,873 |
| Midea M Series 20kW | Best budget, year round Brisbane | 21.8 kW | 17.0 kW (lower ambient) | Single phase, 25A circuit | $3,799 / $3,799 |
| Fairland AquaX Essential 11kW | Small and plunge pools | 11 kW | 7.8 kW | Single phase, 10A plug | $3,182 / $3,350 |
| Fairland AquaX Essential 21.2kW | Year round Sydney, 50,000L pools | 21.2 kW | 14.6 kW | Single phase, hardwired | $5,242 / $5,408 |
| Guardian Platinum 25kW | Big pools, winter swimming | 25.0 kW | 19.9 kW | Single phase, hardwired | $6,864 |
Prices current as of November 2026, AUD including GST. Fairland prices vary by state, so NSW and QLD prices are both shown. Outputs from each manufacturer's spec sheet on the product page.
What size pool heat pump Sydney and Brisbane pools need
A 40,000 litre Sydney pool needs about 14.4 kW of heat pump uncovered to hold 28°C from October to April, while the same pool in Brisbane needs about 9.1 kW. With a pool cover, the Sydney figure drops to about 7.9 kW and the Brisbane figure to about 7.6 kW.
| Pool | Sydney, Oct to Apr | Brisbane, Oct to Apr | Sydney, all year | Brisbane, all year |
|---|---|---|---|---|
| 30,000 litres, uncovered | About 10.8 kW | About 6.8 kW | About 19.9 kW | About 15.7 kW |
| 40,000 litres, uncovered | About 14.4 kW | About 9.1 kW | About 26.5 kW | About 20.9 kW |
| 50,000 litres, uncovered | About 18.1 kW | About 11.3 kW | About 33.1 kW | About 26.1 kW |
| 40,000 litres, with a cover | About 7.9 kW | About 7.6 kW | About 14.6 kW | About 11.5 kW |
Figures from our sizing calculator at 28°C, average wind and part sun, sized on the coldest month you swim (October for the long season, July for all year).
Look at the right hand columns. Year round swimming nearly doubles the size in both cities, because July is the design month instead of October. Brisbane owners are the ones most tempted to heat all year, since winter days are mild. It works. It just needs a 20 kW class unit on a 40,000 litre pool, not a 13.8. The full pool heat pump size chart covers every city and pool size.
Best pool heat pump for Sydney: Fairland AquaX Essential 17.1kW
The Fairland AquaX Essential 17.1kW is the best pool heat pump for Sydney because it covers the 14.4 kW an uncovered 40,000 litre Sydney pool needs for an October to April season, with headroom for a cold snap, at $4,607 in NSW.
It gives 11.8 kW at 15°C air with a COP of 7.3 to 4.7, and a seasonal COP of 7.6. At 50 percent capacity the COP is 10.3, which matters because a correctly sized inverter spends most of a Sydney spring at part load. Input power at 15°C air ranges from 0.32 to 2.51 kW. Sound is 44.8 to 56.2 dB(A) at 1 metre. It weighs 60 kg, measures 962 x 349 x 654 mm, and it is hardwired on 230V single phase. Cooling is 5.5 kW, which a shallow pool in a Western Sydney January will actually use.
Why not bigger? Because in Sydney a 21 kW unit on a normal 40,000 litre pool mostly loafs, costs $635 more, and takes more pad space. Buy bigger only if you want to swim through winter or the pool is over 45,000 litres.
View the Fairland AquaX Essential 17.1kW →
Best pool heat pump for Brisbane: Fairland AquaX Essential 13.8kW
The Fairland AquaX Essential 13.8kW is the best pool heat pump for Brisbane because a 40,000 litre Brisbane pool only needs about 9.1 kW for an October to April season, and this unit covers it with margin at $3,873 in Queensland.
It gives 9.8 kW at 15°C air, which is colder than Brisbane ever gets in swimming season, with a COP of 7.8 to 4.6 and a seasonal COP of 7.6. It is quiet at 41.8 to 54.2 dB(A) at 1 metre, weighs 49 kg, and runs from a 15 amp outlet rather than a hardwired circuit. The outlet still has to be suitably rated and installed by a licensed electrician.
Brisbane is the easiest heat pump climate on the east coast. Warm, humid air is exactly what a heat pump wants, so the COP stays high and the running cost stays low. The common mistake here is buying a Sydney size unit for a Brisbane pool. It works. It is just $700 to $1,500 you did not need to spend.
The same unit is also the right call for a covered Sydney pool up to about 45,000 litres.
View the Fairland AquaX Essential 13.8kW →
Best budget pool heat pump: Midea M Series 20kW
The Midea M Series 20kW is the best budget pool heat pump for both cities, rated at 21.8 kW, or 17.0 kW in lower ambient conditions, for $3,799 delivered anywhere.
Headline COP is 5.2, falling to 3.6 in cooler air. It needs a 25A dedicated circuit (23A maximum draw), runs at 54 dB(A) normally or 40 dB(A) in silence mode at about 60 percent capacity, and carries a 5 year residential warranty. It is our top selling pool heat pump nationally.
For Brisbane owners who want to swim all year, this is the standout. A 40,000 litre Brisbane pool needs about 20.9 kW for year round heating, and the Midea delivers 21.8 kW for less than the 13.8 kW Fairland costs in Queensland. The trade off is efficiency in cold air, where the Fairland range has the higher COP. In Sydney it is the budget answer for a 40,000 to 50,000 litre pool heated spring to autumn.
View the Midea M Series 20kW →
Best for small and plunge pools: Fairland AquaX Essential 11kW
The Fairland AquaX Essential 11kW is the best pool heat pump for small and plunge pools in Sydney and Brisbane, at $3,182 in NSW and $3,350 in QLD, and it plugs into a normal 10 amp outlet.
It gives 11 kW at 26°C air and 7.8 kW at 15°C, with a COP of 7.3 to 4.8 in cool air and a seasonal COP of 7.3. Sound is 41.3 to 53.4 dB(A) at 1 metre, it weighs 47 kg and it is 872 x 349 x 654 mm. That suits a 30,000 litre Brisbane pool (about 6.8 kW needed for October to April) or a 20,000 to 25,000 litre Sydney plunge pool. The 10 amp plug is the real win: no new circuit for most homes, though an electrician should still check the outlet.
View the Fairland AquaX Essential 11kW →
Best for year round Sydney swimming: Fairland AquaX Essential 21.2kW
The Fairland AquaX Essential 21.2kW is the best pool heat pump for year round swimming in a covered 40,000 litre Sydney pool, or a 50,000 litre pool heated October to April, at $5,242 in NSW.
It gives 14.6 kW at 15°C air with a COP of 7.6 to 4.5 and a seasonal COP of 7.3, and it ramps down to as little as 0.38 kW to hold temperature. Sound is 45.1 to 57.0 dB(A) at 1 metre. It is hardwired on single phase, with 7.7 kW of cooling. A 40,000 litre Sydney pool heated all year needs about 14.6 kW with a cover. That lines up with this unit almost exactly. Without a cover, year round in Sydney is a 26 kW job, and the next pick is the better fit.
View the Fairland AquaX Essential 21.2kW →
Best for big pools and winter swimming: Guardian Platinum 25kW
The Guardian Platinum 25kW is the best pool heat pump for a large Sydney or Brisbane pool heated through winter, delivering up to 19.9 kW at 15°C air for $6,864.
Cold air COP is 8.0 to 5.2 at 15°C, it runs down to minus 15°C, and the compressor is a Mitsubishi rotary inverter. Sound pressure is 44 to 53 dB(A) at 1 metre. It is hardwired on 220 to 240V single phase, 1330 x 548 x 930mm and 172 kg, so plan the pad and the access path first. For an uncovered 40,000 litre Brisbane pool heated all year (about 20.9 kW needed) or a 50,000 litre Sydney pool on the long season (about 18.1 kW), this is the unit with real reserve.
View the Guardian Platinum 25kW →
Sydney and Brisbane conditions that change the choice
Four local conditions change which pool heat pump you should buy in Sydney or Brisbane: Western Sydney cold nights, Brisbane humidity, coastal salt air and summer storms.
Western Sydney nights
Western Sydney and the Hills run colder overnight than the coastal suburbs, so a Penrith or Castle Hill pool needs more heat pump than the same pool in the eastern suburbs. Put your postcode into the calculator rather than using the Sydney average.
Brisbane humidity
Warm, humid Brisbane air carries more heat for a heat pump to extract, so units run at a higher COP and cost less per degree than in Sydney. Running cost on a 40,000 litre Brisbane pool for an October to April season comes out around $630 at 33c per kWh in our calculator, against about $1,090 in Sydney. Those are model estimates, not bills.
Coastal salt air
A pool heat pump within a few hundred metres of the ocean, from the Northern Beaches to the Gold Coast, faces salt laden air on its fins and casing. Every unit here has a titanium heat exchanger for the pool water side. Hose the coil down with fresh water every few months and keep it out of direct sea spray.
Summer storms
Queensland and Sydney summer storms bring power surges and flash flooding, so mount the heat pump on a raised, level pad clear of where water pools in the yard. A surge rated circuit is worth asking your electrician about.
Do not forget the pool pump
A pool heat pump only heats while the filtration pump pushes water through it, so the pool pump has to run whenever the heater does. Pair it with a variable speed unit from our swimming pool pumps range and set the low speed high enough to meet the heat pump's minimum flow.
Installation in Sydney and Brisbane
Every pool heat pump on this list must be connected by a licensed electrician, and the hardwired units need a dedicated circuit.
Check your switchboard has room before the unit arrives. Leave the airflow clearances in the manual, sit the unit on a solid level pad, and keep it away from bedroom windows on your side and the neighbour's. Councils in both cities act on noise complaints, which is a point for the quieter Fairland 11kW and 13.8kW units. Our guide to pool heat pump installation requirements covers the detail.
Frequently asked questions
What is the best pool heat pump for Sydney?
The best pool heat pump for most Sydney pools is the Fairland AquaX Essential 17.1kW at $4,607, because it covers the 14.4 kW an uncovered 40,000 litre Sydney pool needs to hold 28°C from October to April. The Midea M Series 20kW at $3,799 is the budget pick (prices as of November 2026).
What is the best pool heat pump for Brisbane?
The best pool heat pump for most Brisbane pools is the Fairland AquaX Essential 13.8kW at $3,873, because a 40,000 litre Brisbane pool needs only about 9.1 kW for an October to April season. For year round swimming in Brisbane, the Midea M Series 20kW at $3,799 is the better fit (prices as of November 2026).
What size pool heat pump do I need in Sydney?
A Sydney pool needs about 14.4 kW of heat pump for a 40,000 litre pool uncovered from October to April at 28°C, or about 7.9 kW with a pool cover. Heating the same pool all year needs about 26.5 kW uncovered or 14.6 kW covered.
What size pool heat pump do I need in Brisbane?
A Brisbane pool needs about 9.1 kW of heat pump for a 40,000 litre pool uncovered from October to April at 28°C, or about 7.6 kW with a pool cover. Heating the same pool all year in Brisbane needs about 20.9 kW uncovered or 11.5 kW covered.
How much does it cost to run a pool heat pump in Brisbane?
Running a pool heat pump on a 40,000 litre uncovered Brisbane pool from October to April costs around $630 for the season at 33c per kWh, based on our calculator model. The same pool in Sydney costs around $1,090. A pool cover cuts both figures substantially, and real bills vary with weather and tariff.
Want a Sydney or Brisbane sizing done properly?
Send us your pool volume, your suburb, whether you use a cover and when you want to swim. We will size the heat pump against cooler air output, not the brochure number, and tell you straight if a smaller unit will do.
Comparing cities? See the best pool heat pump for Melbourne, the best pool heat pump for Perth, our national best pool heat pumps in Australia roundup, or contact us with any question.
This guide is general information for Australian pool owners and is not a substitute for advice on your specific pool and site. Sizing and running cost figures are rules of thumb from our calculator model. Pool heat pumps are electrical appliances and must be installed by a licensed electrician on a suitably rated circuit. Confirm final sizing with us before you buy.