Modern New Zealand home with AquaCore hot water heat pump

Make the switch to AquaCore

The hot water heat pump delivering reliable hot water to Kiwi homes since 2013

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0% Up to 80% hot water cost savings*1
0+ Years proven in NZ
0°C Hot water delivery
-15°C Cold climate performance
Hot water from tap - AquaCore heat pump hot water system

Reduce hot water heating costs by up to 80%*1

Whether you are looking to install a new system or want to keep your existing electric hot water cylinder, reducing your power bill has never been easier with an AquaCore domestic hot water heat pump.

AquaCore delivers an impressive COP of 3.6*2, reducing hot water energy costs by up to 80%.
It's a smart, future-proof alternative to gas or traditional electric systems as energy prices continue to rise.

Why Choose AquaCore?

  • Up to 80% lower hot water energy costs
  • High efficiency COP of 3.6
  • Works with your existing electric cylinder
  • Rapid heat recovery – hot water for a shower in as little as 20 minutes

Yes, you can keep your existing electric hot water cylinder

Convert what you already have into a modern high-efficiency hot water heat pump system

While AquaCore is an excellent option if you are looking for a new hot water heat pump system, one of its key advantages is flexibility.
If your existing electric cylinder is still in good condition, you can keep it and avoid the cost of a full replacement.

Minimal disruption during installation
Extended life of your existing cylinder

Saving on hot water heating has never been simpler.

AquaCore heat pump retrofit - works with existing hot water cylinder NZ
New Zealand winter landscape - AquaCore heat pump performs down to -15 degrees C

Proven performance in real New Zealand winters

Engineered for New Zealand's low ambient temperatures

AquaCore is engineered specifically for New Zealand's low ambient temperatures, delivering reliable performance year-round. Systems installed as far back as 2013 are still operating successfully in the field today.

Patented partial cascade technology means high efficiency and consistent delivery of hot water into the tank even in the sub-zero temperatures.
Exceptional cold-climate performance maintaining 60°C in your hot water tank down to -15°C outdoor temperature.
Superior frost protection because water pipes are not outdoors
62°C Consistent delivery
-15°C Cold climate performance
Family enjoying reliable hot water - AquaCore top-down cylinder heating

Fast-track your payback time with AquaCore

Why keep heating a whole tank when you don't need to?

Have you ever wondered why traditional hot water tanks keep heating all the water whether you're using it or not and how much that's costing you?

Conventional electric hot water cylinders are designed to continuously heat and re-heat the entire tank to maintain a set temperature. This means you're paying to keep water hot 24 hours a day, 7 days a week, even when no one is using it.

Furthermore, traditional systems use electric immersion elements located at the bottom of the cylinder. Because cold water enters at the bottom, it can take hours for hot water to rise to the top of the tank where it's actually drawn off.

AquaCore works differently and smarter.

With AquaCore, water is heated to 62°C by the indoor unit and pumped directly into the top of the cylinder. As a result, the full tank doesn't need reheating, delivering hot water faster when it's needed most.

Less wasted heat Less unnecessary power use Faster access to hot water

Built to perform where all-in-one systems struggle

Why AquaCore is different

Top-mounted heat pump water systems usually require a backup element in colder conditions, as the compressor alone isn't sufficient.

All-in-one integrated systems

  • Often rely on a backup electric element in winter to compensate when outdoor temperatures drop
  • May require an extra backup element to achieve 60°
  • All-in-one outdoor systems with external water pipework are more vulnerable to freezing conditions

AquaCore

  • Engineered to deliver full domestic hot water temperatures using the heat pump alone under normal operating conditions
  • No reliance on an electric element under normal operation - up to 62°
  • Superior frost protection and winter performance, ensuring reliable hot water when you need it most
  • Delivers genuine efficiency and real savings all year round

AquaCore is different.

AquaCore is engineered to deliver hot water using the heat pump alone under normal operating conditions, without reliance on an electric element. With superior frost protection and winter performance, AquaCore ensures reliable hot water when you need it most, delivering genuine efficiency and real savings all year round.

Why do all-in-one systems struggle?
Shower running with AquaCore quiet hot water heat pump

Why top-down cylinder water heating matters

Fast, practical hot water when you need it

Unlike other hot water heat pumps, the AquaCore system heats water from the top down, delivering fast and practical hot water without compromise even in the depths of winter.

Hot water for a shower in as little as 20 minutes from a cold tank
Ideal for larger families and high water use households
Consistent hot water so no one has to wait when it matters most

This proven technology has been operating in New Zealand homes for over 12 years, delivering reliable domestic hot water to families nationwide – a true testament to durability and performance.

How much you can save

Proven long-term water heating savings

According to EECA*3, hot water heat pumps are the lowest-cost method of heating water over time.

Over a 10-year period, total cost of ownership is:

21% cheaper than gas continuous flow* Over 10 years
27% cheaper than traditional electric hot water cylinders* Over 10 years
30% of the average NZ Household energy* Save from day one

Domestic hot water accounts for approximately 30% of the average New Zealand power bill. Upgrading to AquaCore can deliver meaningful savings from day one and even greater returns over time.

Hot water heat pumps in the home | EECA

Return on Investment

Start benefitting from low DHW heating costs now with an ROI of under 5 years*4.

Based on an average 4 person home, the return on investment compared to purchasing a standard electric cylinder could be under 4 years and for a gas system under 5 years. If retrofitting to an existing cylinder the ROI can be reduced further to under 3 years!

AquaCore hot water heat pump ROI savings comparison graph
AquaCore Wi-Fi control app on smartphone - manage hot water remotely

Smart hot water with Wi-Fi control for everyday convenience

Heat your water when you need it, not all day

AquaCore heats and stores hot water automatically, with Wi-Fi Control giving you extra flexibility to manage it around your routine. Instead of heating continuously, you can optimise when and how your system runs.

Using the app, you can check your tank temperature and start an extra heating cycle if needed – perfect for times when demand is higher than usual, like when guests arrive.

Monitor your tank temperature and manage your system from wherever you are
Set a schedule so your hot water is ready when it suits your routine
Use "Heat Now" to add an extra heating cycle when you need more hot water than usual
Switch to "Holiday Mode" to pause heating while you're away, then turn it back on before you return - also ideal for holidays or second homes
Make the most of off-peak or free power periods to help reduce running costs

AquaCore comes ready with Wi-Fi Control. Simply connect the indoor unit to your router and download the Mitsubishi Electric App for easy, optional control of your hot water system.

Learn more about Wi-Fi control
AquaCore heat pump hot water system installed in New Zealand residential home

Quiet, compact, neighbour-friendly design

Designed for residential environments

Many all-in-one Monobloc outdoor systems can be noisy and are often tall enough to extend above boundary fences, increasing the risk of noise transmission between neighbouring properties.

The AquaCore system is different. Designed as a quiet, low-profile powerhouse, AquaCore features a compact outdoor unit with a small footprint that is easy to position discreetly. This ensures minimal visual impact, reduced noise disturbance, and greater flexibility in installation making it ideal for residential environments.

How an AquaCore hot water heat pump works

The system

Three key components working seamlessly together

1
Outdoor unit

The Outdoor Unit

Absorbs freely available warmth from the air with a super-efficient COP of 3.6. This can reduce hot water heating costs by up to 80%* compared to traditional direct electric systems.

2
Indoor heat exchanger

The Heat Exchanger

Heats water to 62°C and feeds it directly into the top of your cylinder. This indoor unit is manufactured locally and specially designed for New Zealand low temperature conditions.

3
Hot water cylinder

The Cylinder

Works with your existing or new hot water cylinder no replacement required.

AquaCore hot water heat pump case studies - New Zealand homes

Real world results

View case studies

See AquaCore in action across New Zealand homes.

Explore case studies

If you're tired of short showers and high power bills, it's time to switch.

Request a free quote

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Ready to make the switch?

Start saving on your hot water bills today.

Find a dealer Contact us

Or call us: 0800 784 382

  • *1. Savings can vary based on energy prices, usage, installation and ambient temperature.
  • *2. COP tested to AS/NZS 5125 with a high draw off load.
  • *3. Based on information provided by EECA.
  • *4. ROI based on an Auckland home with 4 people using MBIE current energy pricing data with projected electricity and gas charges year on year.
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