Advanced heat pump technology, specified properly.
A heated pool is an asset that earns its keep year-round — but only when the equipment is matched to the water. Inverter heat pumps now move heat at efficiencies gas and electric resistance heaters cannot approach. As Principal Technician, John Brennan has specified and serviced pool heating across NSW, QLD and the NT for over 25 years.
Heat moved, not burned.
A heat pump does not generate heat the way a gas or electric resistance heater does. It transfers it. That single distinction is why inverter heat pumps have become the considered choice for premium pool heating.
It transfers, not generates
An inverter heat pump uses a refrigerant to extract ambient heat from the surrounding air and transfer it into the pool water. No fossil fuel is burned, and no heat is manufactured from scratch — which is precisely why the running cost is a fraction of a gas heater's.
Inverter control is the gain
Full inverter technology varies the compressor speed to match demand rather than cycling on and off. The Madimack InverELITE V4 turns this precision into a Coefficient of Performance (COP) of 22 — the published world-best efficiency rating in pool heating.
Built to outlast the pool
A quality inverter heat pump lasts 15 to 20 years with correct servicing. The InverELITE V4's titanium heat exchanger carries a 25-year warranty and tolerates chlorine, salt and mineral water alike — asset preservation, not a disposable appliance.
Heating is the one upgrade where the cheap option costs you the most. The running cost is where the real price hides. — John Brennan, Practice Lead
The InverELITE V4 — a world-best COP of 22.
COP, the Coefficient of Performance, is the industry's efficiency standard: the ratio of heat produced to electricity consumed. The Madimack InverELITE V4 holds a published COP of 22, the highest in the category, verified under the rated condition of 27°C air, 27°C water and 80% humidity. John Brennan Pools specifies the V4 as its benchmark heat pump.
For every 1 unit of electricity the InverELITE V4 draws, it delivers up to 22 units of heat into the pool. A traditional electric resistance heater returns roughly 1 unit for 1 — the efficiency gap is the entire argument.
The V4's performance comes from a twin-rotary Mitsubishi DC compressor for the fastest heat-up times in its class, the world's first 3-directional airflow design, and triple-layered sound insulation that makes it the quietest pool heat pump in the world — as low as 16 dB(A) at ten metres. It is backed by 7-year all-parts, 15-year compressor and 25-year heat-exchanger warranties.
The InverFLOW Ultra — long-term cost recovered.
Heating is only half the running-cost equation; the circulation pump is the other. The Madimack InverFLOW Ultra runs up to 14 times more efficiently than a traditional single-speed pump, with full inverter control adjusting capacity between 30 and 100% on demand. Pair it with a heat pump and the savings compound. See John Brennan Pools' guide to energy-efficient pool pumps.
On a 50,000L pool running 8 hours a day at 30c per kWh, the InverFLOW Ultra costs about $238 a year in energy versus roughly $937 for a single-speed pump. It reaches cost break-even in Year 2 and is around $2,097 ahead by Year 5 — the cheaper purchase price is recovered, then overtaken.
The Ultra carries an IP55 weather rating, a quiet DC brushless motor with Sound Suppression Technology, WiFi and AI/MI control, and an Active Energy Monitor — so the savings are visible, not assumed. For the broader case, read how inverter equipment lowers running costs.
The heating cycle, step by step.
An inverter heat pump runs a continuous refrigeration cycle in reverse — pulling warmth from the air and depositing it in your water. Here is the sequence the InverELITE V4 repeats until the set temperature is reached.
Air drawn in
A commercial-grade centrifugal fan pulls ambient air across the evaporator. The warmer and more humid the air, the more heat is available to harvest.
Refrigerant absorbs heat
The R32 refrigerant absorbs heat from the passing air and evaporates into a low-pressure gas — even in air as cold as -20°C, within the V4's operating range.
Compressor raises it
The twin-rotary Mitsubishi DC compressor compresses the gas, sharply increasing its temperature and pressure ready to give that heat up.
Heat exchanger transfers
The hot gas passes through the titanium heat exchanger, transferring its heat into the circulating pool water — the only point the two ever meet.
Expansion valve resets
The cooled refrigerant flows through an expansion valve, dropping its temperature and pressure back to the starting state.
The cycle repeats
The loop runs continuously until the water reaches your set point, then the inverter throttles back rather than switching off — holding temperature efficiently.
Efficiency falls in colder, drier air, so correct sizing matters — an undersized unit runs longer and costs more. Read the real cost of cheap imports.
Sizing is where most heating jobs are won or lost. Get it right once and the pump barely has to work. — John Brennan, Practice Lead
Is your current setup costing you?
If you recognise more than one of these, your heating and circulation are likely overdue for a considered review.
A fixed-speed pump can cost around $937 a year to run — roughly four times an inverter pump on the same pool.
Gas running costs are up to five times that of an electric inverter heat pump, with a shorter lifespan to match.
Most heat pumps reach end of efficient life at 15–20 years. Older units lose performance well before they fail.
A correctly sized unit should reach temperature inside 16 hours. Longer points to an undersized or ageing heater.
If no Coefficient of Performance figure was quoted at purchase, you have no measure of what the unit costs to run.
An undersized heater runs constantly and may never reach the set temperature on cold days — the most expensive way to heat.
An undersized heater is the false economy people regret every winter. Size for the worst day, not the average one. — John Brennan, Practice Lead
Heat pump questions, answered.
How efficient is the Madimack InverELITE V4 pool heat pump?
The Madimack InverELITE V4 achieves a world-best Coefficient of Performance (COP) of 22, meaning it delivers up to 22 units of heat for every 1 unit of electricity it consumes. This figure is rated under standard conditions of 27°C air, 27°C water and 80% humidity, and is independently testable as COP is the heat pump industry's standard efficiency measure. John Brennan Pools specifies the InverELITE V4 as its benchmark heat pump for Central Coast properties.
How much can the Madimack InverFLOW Ultra pool pump save on running costs?
The Madimack InverFLOW Ultra costs approximately $238 per year in energy versus around $937 for a single-speed pump, saving roughly $2,097 over five years. This modelling assumes a 50,000-litre pool running 8 hours a day at 30c per kWh. The InverFLOW Ultra runs up to 14 times more efficiently than a traditional single-speed pump and reaches cost break-even against the cheaper single-speed unit in Year 2.
How long does a pool heat pump last?
A quality inverter pool heat pump lasts 15 to 20 years with proper maintenance and regular servicing. The Madimack InverELITE V4 backs this longevity with a 7-year all-parts warranty, a 15-year compressor warranty and a 25-year warranty on the titanium heat exchanger. John Brennan Pools recommends an annual service to protect both performance and warranty cover.
Can a pool heat pump work through cold Central Coast winters?
Yes — the Madimack InverELITE V4 operates in air temperatures from -20°C to 43°C, well beyond any Central Coast winter. Efficiency does reduce in colder, drier air because a heat pump draws warmth from the surrounding air, so John Brennan Pools sizes each unit for the coldest expected day rather than the average. Running the pump during warmer daytime hours further improves cold-weather efficiency.
How much does a pool heat pump cost to buy and install?
Pool heat pumps range from approximately $2,500 to $12,500 depending on brand, model and pool size. The variation reflects heating capacity, build quality and efficiency rating — a higher COP unit costs more upfront but far less to run. John Brennan Pools provides a fixed quote after assessing your pool volume, location and how you use the pool across the year.
Is the Madimack InverELITE V4 noisy to run?
No — the Madimack InverELITE V4 is the quietest pool heat pump in the world, measuring as low as 16 dB(A) at ten metres. This near-silent operation comes from triple-layered sound insulation combining condensed fibre, foam and a metal jacket. For premium residences and luxury holiday rentals where ambient noise matters, this makes the V4 the considered choice.
The Heating Series.
Uncompromising StandardsHeat your pool properly.
John Brennan Pools supplies, installs and services premium inverter heat pumps and energy-efficient pumps across the NSW Central Coast — sized to your pool, fitted to standard, and delivered with Master-Level Care. Because your pool is an investment, not just a backyard feature. No upselling, no call centres.
Written by John Brennan
John Brennan is the Practice Lead and Principal Technician of John Brennan Pools, a specialist pool and spa practice serving the NSW Central Coast since 2019. As Principal Technician, John brings over 25 years of hands-on technical experience — across QLD, the NT, and NSW — in diagnostics, clinical water chemistry, and asset preservation. As Practice Lead, he sets the clinical standards every technician on the team is trained to meet, so every engagement is delivered with the same Master-Level Care.
John specifies and services inverter pool heating across the Central Coast, selecting equipment such as the Madimack InverELITE V4 and InverFLOW Ultra on measured efficiency rather than headline price. Correct sizing, clean installation and annual servicing are where heating systems either earn their running-cost savings or quietly lose them — and that is the standard the practice holds.
Fully Licensed & Insured · ABN 11 202 829 652 · Contact John
References & Standards We Follow
The technical figures on this page are drawn from manufacturer specifications and recognised efficiency standards:
- Coefficient of Performance (COP) — the heat pump industry's standard efficiency ratio of heat output to electrical input; Madimack units are tested by TÜV Rheinland.
- Madimack InverELITE V4 — published world-best COP of 22, rated at 27°C air / 27°C water / 80% humidity; operating range -20°C to 43°C; warranties of 7 years (parts), 15 years (compressor) and 25 years (heat exchanger).
- Madimack InverFLOW Ultra — energy figures modelled on a 50,000L pool running 8 hours per day at 30c per kWh; "14× more efficient" stated relative to a traditional single-speed pump. Prices are indicative RRP only.
- NSW & AS/NZS electrical standards — all heating and pump installation carried out to current Australian requirements by licensed trades.
This page offers general guidance only. Always defer to current NSW regulations and accredited professionals for your specific property.
Across the Central Coast.
Full pool servicing across 90+ suburbs — from Umina to Lake Munmorah and everywhere between.