The Best Pool Heat Pumps in Australia This Year
Written for Australian pool owners who have opened nine tabs, found nine "top 10" lists written by people who have never installed one, and given up.
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The best pool heat pump in Australia for most backyard pools right now is the Midea M Series 20kW at $3,799, because nothing else in that size gets close on price without giving up build quality. If running cost matters more than the sticker, the Guardian Platinum 20kW inverter at $6,290 is the better long-term buy. For a small pool or a tight budget, the Fairland Aqua X Essential range starts at $1,950 and is a genuine full inverter, not a cheap on/off unit wearing an inverter badge.
That is the whole answer. The rest of this page is why, and which one suits your pool specifically.
The short list
Eight units cover essentially every Australian backyard pool and spa. These are the ones we sell most of and the ones we would put in our own yards.
| Best for | Model | Size | Type | Price |
|---|---|---|---|---|
| Overall value | Midea M Series 20kW WiFi | 20kW | On/off | $3,799 |
| Running cost | Guardian Platinum 20kW Inverter | 20kW | Inverter | $6,290 |
| Premium and quietest | Guardian Lux-V 20kW Top Discharge | 20kW | Full DC inverter | $7,990 |
| Budget and small pools | Fairland Aqua X Essential 7.5kW | 7.5kW | Full inverter | $1,950 |
| Mid-size inverter value | Fairland Aqua X Essential 17.1kW | 17.1kW | Full inverter | $4,140 |
| Simple and reliable | SensaHeat ES Series 20kW | 20kW | On/off | $4,600 |
| Big pools | Guardian Eco Pro 35kW | 35kW | On/off | $9,451 |
| Spas | Spanet SV Series 9kW | 9kW | Integrated spa unit | $2,850 |
Prices are Waternex list prices in AUD including GST, current as of August 2026.
Best overall value: Midea M Series 20kW
The Midea M Series 20kW at $3,799 is the best value pool heat pump in Australia for a standard family pool, and it is our best seller by a wide margin. A 20kW unit suits pools up to roughly 40,000 litres, which covers the large majority of Australian backyards.
Midea is not a boutique pool brand. Midea is one of the largest air conditioning manufacturers on earth, which is why a 20kW unit from them costs what a 13kW unit costs from a specialist. You get WiFi control, a titanium heat exchanger and a compressor built at a scale nobody in the pool industry can match.
The trade-off is honest: it is an on/off unit, not an inverter. It runs at full noise and full draw until the pool hits temperature, then cuts out. Cheaper to buy, more to run than an inverter, and louder while it is working. For a pool that gets heated in bursts rather than held at temperature all season, that is the right trade. Full detail on the Midea 20kW page.
Best running cost: Guardian Platinum 20kW Inverter
The Guardian Platinum 20kW at $6,290 is the pick when the pool stays warm all season and the power bill is the number you actually care about. It carries a rated COP of up to 16, meaning up to 16 units of heat per unit of electricity at the manufacturer's low-lift test conditions.
Treat that 16 as a laboratory ceiling, not a Tuesday in July. Real-world seasonal COP on any pool heat pump lands lower once you factor in cold air, a bigger temperature lift and a pool that loses heat overnight. The comparison that matters is relative: a high-COP inverter genuinely beats an on/off unit of the same kW on running cost, usually by a large enough margin to pay back the extra $2,500 over several seasons if you run a long season.
Short season, warm climate, occasional use? The payback stretches out and the Midea makes more sense. Long season, cold nights, pool held at temperature? The Platinum wins.
Best premium and quietest: Guardian Lux-V 20kW
The Guardian Lux-V 20kW at $7,990 is the quietest pool heat pump we sell, and the top discharge design is why. The fan blows up instead of sideways, so the noise goes over the fence rather than through it, and the unit can sit closer to a boundary without annoying anyone.
Full DC inverter throughout: the compressor and the fan both modulate, so once the pool is at temperature the unit drops to a hum you have to stand next to to hear. If the heat pump is going under a bedroom window or on a narrow side path in a townhouse, this is the one worth the money. The range runs 13kW to 32kW.
If it is not going near a window, the Platinum does most of the same job for $1,700 less.
Best budget buy: Fairland Aqua X Essential
The Fairland Aqua X Essential 7.5kW at $1,950 is the cheapest genuine full inverter pool heat pump in our range, and it is the value story of the year. Most heat pumps under $2,000 are basic on/off units. This one modulates.
The range is broad and the pricing stays sharp all the way up:
- 8.8kW at $2,310 for plunge pools and small courtyard pools
- 13.8kW at $3,330 for small family pools
- 17.1kW at $4,140, the sweet spot for a standard family pool
- 34.5kW at $7,410 for large and lap pools
That 17.1kW at $4,140 is the quiet achiever on this whole page. Full inverter, mid-size, and it undercuts every other inverter here by a serious margin. These units heat and cool, which matters more than people expect in a Perth or Brisbane February when the pool turns into a bath.
Best simple workhorse: SensaHeat ES Series
The SensaHeat ES Series 20kW at $4,600 is for people who want a heat pump, not a hobby. No app, no inverter, no menu diving. A dial, a temperature, and water that gets warm.
The ES range spans 13kW at $3,200 through to 24kW at $5,500. Fewer electronics means fewer things to fail in ten years, which is a real argument and not just nostalgia. If you want the same simplicity with WiFi and quieter running, the SensaHeat TDX 14kW at $3,879 is the step across.
Best for big pools: Guardian Eco Pro 35kW
The Guardian Eco Pro 35kW at $9,451 handles pools past 55,000 litres, which is where lap pools and large family pools live. Below that size the Eco Pro range steps down through 28kW, 24kW, 20kW, 16kW, 12kW and 9kW, so there is a rung for every pool.
Big pools punish undersizing harder than small ones. A 20kW unit on a 60,000 litre pool never stops running and never quite gets there, so it costs more to run than the 35kW that reaches temperature and idles. Buy the kW you need. Our pool heat pump sizing guide walks through the volume maths.
Best for spas: Spanet SV Series 9kW
The Spanet SV Series 9kW at $2,850 is the pick for a spa, because a spa is a different problem to a pool. Spas hold far less water, want far higher temperatures, and need to get there fast. A pool heat pump sized for a pool will heat a spa eventually, in the same way a garden hose will eventually fill a bath.
The SV Series integrates with Spanet spa controls, which is the practical reason to choose it over a generic unit. A 12kW version is available at $4,000 for larger swim spas.
How we picked these
Three things decide whether a pool heat pump is right, and price is not the first of them.
Match the kW to the pool, not to the budget
Undersizing is the most expensive mistake in pool heating and it is the one people make trying to save money. An undersized unit runs flat out around the clock, never reaches temperature on a cold snap, and wears itself out doing it. A correctly sized unit reaches temperature and then idles. Roughly: under 20,000L wants 9kW to 13kW, 20,000L to 40,000L wants 13kW to 20kW, and past 55,000L wants 28kW and up.
Inverter or on/off, decided by season length
Inverters win on running cost, on/off units win on purchase price, and season length is the tiebreaker. A unit that runs six months a year holding a pool at 28 degrees will repay an inverter premium. A unit that gets switched on for a fortnight either side of summer will not. Be honest about which one you are.
Noise and where the unit physically goes
Noise complaints are the most common regret we hear, and they are entirely avoidable at purchase. Walk to where the unit will sit and look at what is on the other side of the fence. If that is a neighbour's bedroom, buy the top discharge inverter and stop thinking about it. If it is a side path nobody uses, save the money.
What is not on this list
Marketplace imports and no-name units are deliberately absent. A pool heat pump is a refrigeration appliance plumbed into your pool and wired into your switchboard, and when a no-name unit fails in year three there is nobody to call, no spare parts, and no gas charge available. The money saved evaporates the first time it breaks.
Gas heaters are also absent, for a different reason. Gas beats a heat pump only when you want a cold pool hot in a hurry a few times a year. On anything resembling regular use it loses badly, and our gas vs electric vs heat pump comparison has the numbers.
Frequently asked questions
What is the best pool heat pump in Australia in 2026?
The Midea M Series 20kW at $3,799 is the best pool heat pump in Australia for most backyard pools, on price against build quality for a standard 30,000 to 40,000 litre pool. For lowest running cost the Guardian Platinum 20kW inverter at $6,290 is better, and for the quietest operation the Guardian Lux-V 20kW at $7,990 leads.
What is the best value pool heat pump for a small pool?
The Fairland Aqua X Essential 7.5kW at $1,950 is the best value option for a plunge pool or small courtyard pool in Australia. It is a genuine full inverter at a price where most competitors are basic on/off units, and it cools as well as heats.
Is an inverter pool heat pump worth the extra money in Australia?
An inverter is worth it if you run a long season or hold the pool at temperature, and it is not worth it for occasional summer top-ups. Inverters modulate output instead of cycling on and off, which cuts running cost and noise, but the purchase premium is typically $2,000 or more and needs several seasons of real use to repay.
What is the quietest pool heat pump in Australia?
The Guardian Lux-V range is the quietest pool heat pump we sell, thanks to top discharge airflow and full DC inverter control on both compressor and fan. Top discharge sends noise upward rather than at the neighbouring fence, which matters on narrow blocks and townhouse sites.
How much does a good pool heat pump cost in Australia?
Expect $1,950 to $4,000 for a small to mid-size unit, $3,800 to $6,300 for a 20kW unit suiting a standard family pool, and $7,400 to $9,500 for 32kW to 35kW units on large pools. Prices are Waternex list prices including GST, current as of August 2026, and exclude installation.
Which pool heat pump brand is most reliable in Australia?
Reliability comes down to correct sizing, a titanium heat exchanger and a licensed install more than the badge on the front. Every brand in the Waternex range uses titanium exchangers and carries Australian warranty support, which is the actual dividing line between these units and a marketplace import.
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This guide is general information for Australian pool owners and is not a substitute for advice on your specific pool and site. Pool heat pumps are electrical appliances and must be connected by a licensed electrician. Prices and models are current at the date of publication and change without notice. Confirm final sizing with us or your pool professional before you buy.