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The Best Heat Pump Hot Water Systems in Australia in 2025

The Best Heat Pump Hot Water Systems in Australia in 2025

Last updated on June 26, 2025

What is a heat pump hot water system?

A heat pump hot water system is an energy-efficient way to heat water for domestic use. It works by extracting heat from the surrounding air and transferring it to the water stored in the tank.

A heat pump system’s key components are an outdoor unit containing the compressor, evaporator, and condenser coils and an insulated storage tank holding the heated water.

Unlike traditional electric or gas hot water systems that generate heat by burning fossil fuels, heat pumps use electricity to power a refrigeration system that absorbs ambient heat.

This makes them much more energy efficient, with some units having over 300% efficiency.

The 5 Best Overall Heat Pump Hot Water Systems

Why Reviews Matter When Choosing a System

Choosing the correct heat pump hot water system can have a huge influence on your home’s energy efficiency, bills, and carbon footprint. Reviews provide first-hand feedback from homeowners and experts who have tried out different models under different circumstances.

They serve to point out reliability, long-term performance, and happiness, and the,s it’s essential when shortlisting your choices.

What This Article Will Cover

This article will:

  • Compare heat pump hot water systems with traditional electric and gas units.
  • Highlight the key factors to consider before buying.
  • Offer expert tips for selecting the right system for your home.
  • Answer common FAQs based on user experience and industry standards.

Here is a concise comparison of the 7 best heat pumps for hot water systems for Australian homes.

BrandCapacityCOPNoise LevelPrice RangeWarrantyBest For
Sanden Eco Plus160L, 250L, 315LUp to 5.0As low as 38 dBHigh (Premium)15 years on stainless steel tankEco-conscious families (3–6 people), cold climates like Tasmania or Southern Highlands
EvoHeat Evo270-1270L3.9 to 4.2As low as 36 dBModerate to High6 years tank, 5 years compressor/parts, 1 year laborTech-savvy users (3–5 people), wanting Wi-Fi control and climate versatility
Ecogenica 245L245LApprox. 4.0★Quiet operationBudget-friendlyLimited (1 year on some parts)Budget-conscious homes (3–5 people), needing basic efficient performance
Emerald All-in-One300LApprox. 4.7★Quiet operationHigher upfront cost10-year warranty on all partsFamilies (4–6 people), new installs needing sleek all-in-one systems
Emerald 270L Split270LApprox. 4.7★QuietHigher (due to install)10-year comprehensive warrantySmaller households (2–4 people), flexible install in cold regions
iStore 270L270LApprox. 4.5★Quiet fanModerate5 years tank warrantySmart homes (tech-focused 3–5 people), integration with automation systems

Now that we’ve looked at what to consider when buying a heat pump hot water system, let’s review some of the best units available in Australia:

1. Ecogenica Heat Pump

Ecogenica heat pump

The Ecogenica 245L heat pump water heater offers high efficiency and quality construction at an affordable price point. This unit has an appealing modern design and includes a useful digital display and programmable timer functions.

Pros

  • Energy rating of 4 stars
  • Large 245L storage capacity
  • Quality weather-resistant casing
  • User-friendly digital controls
  • Quiet operation

Cons

  • Only one year warranty on some components
  • Low ambient compressor performance could be better

Who is this product right for?

The Ecogenica 245L is ideal for households with 3-5 people looking for an attractive and well-performing heat pump water heater. Thanks to its upgraded compressor and fan, it works well even in cool climates.

2. Emerald All-in-One Heat Pump

Emeral heat pump

This integrated unit from Emerald combines a 300L vitreous enamel tank with an efficient heat pump in one seamless cabinet. The neat, all-in-one configuration allows for simple installation.

Pros

  • High energy efficiency with a 4.7-star rating
  • Large 300L storage capacity
  • Integrated modern design
  • Quiet operation
  • 10-year warranty on all parts

Cons

  • Higher upfront cost
  • Unit height is not suitable for some spaces

Who is this product right for?

The Emerald All-in-One is ideal for a family of 4-6 people who want a single, integrated heat pump water heating solution. It’s great for a new installation where height is not an issue.

3. Rheem Ambiheat 270 Heat Pump

The Rheem 270L split system pairs a high-performance outdoor heat pump unit with a 270-litre indoor storage tank. This configuration offers flexible installation, with the option to mount the tank on the floor or wall.

Pros

  • High energy efficiency
  • Large 270L tank capacity
  • Flexible installation options
  • Operates effectively in colder climates
  • Backed by a trusted brand with solid warranty support

Cons

  • Installation requires the connection of refrigerant lines
  • Higher upfront cost compared to standard systems

Who is this product right for?

The Rheem 270L Split is ideal for households of 2–4 people seeking an energy-efficient, reliable hot water solution that performs well in cold climates. The split design offers added flexibility for installation in varied home layouts.

4. iStore Heat Pump

iStore heat pump
iStore

The iStore 270L heat pump water heater delivers excellent energy efficiency along with useful smart features. It can integrate with home automation systems for remote monitoring and control.

Pros

  • High 4.5 energy star rating
  • Large 270-litre tank
  • Built-in WiFi for app control
  • Scheduled operation
  • Quiet fan operation

Cons

  • Only 5 years of tank warranty
  • Installation of optional accessories is complex

Who is this product right for?

With its smart connectivity options, the iStore 270L suits tech-savvy households who want to integrate their water heater with home automation systems. Convenience features make hot water management easier.

5. Reclaim Energy Heat Pump

Reclaim Energy Heat Pump

This locally made system from Reclaim Energy offers a large 315L tank coupled with an efficient heat pump capable of operating in freezing conditions. A 10-year warranty across all components backs it.

Pros

  • High energy efficiency with a 4-star rating
  • Large 315L tank capacity
  • Advanced frost-resistant technology
  • Durable and corrosion-resistant stainless-steel tank
  • 10-year comprehensive warranty

Cons

  • Higher purchase price
  • An external ball valve can leak over time

Who is this product right for?

The Reclaim Energy 315L is ideal for a family of 4-6 that needs a high-capacity heat pump water heater that can cope with cold climates. It’s a good long-term investment backed by strong warranty terms.

6. Sanden Eco Plus Heat Pump

The Sanden Eco Plus is a high-grade, Japanese-built split-system heat pump that is characterised by its outstanding energy efficiency and eco-friendliness.

Featuring CO₂ (R744) refrigerant, the product has a high Coefficient of Performance (COP) of up to 5.0, reflecting outstanding energy efficiency. The product comes in 160L, 250L, and 315L tank capacities and can serve different family sizes and is very efficient in Australia’s colder climate.

Pros:

  • It is capable of a COP of as much as 5.0, reducing electricity consumption considerably over conventional systems.
  • Operates with CO₂ (R744), a low Global Warming Potential (GWP) gas.
  • Works at as little as 38 dB noise levels, which is acceptable for residential applications.
  • Has a stainless steel tank warranted for 15 years for durability.
  • Does not lose efficiency even in low ambient temperatures.

Cons:

  • Has premium features that require a larger initial outlay than some other models.
  • As a result of its split-system structure, professional installation is required.

Who is this product appropriate for?

The Sanden Eco Plus is ideally suited to environmentally friendly families looking for a long-term, energy-efficient hot water option. It is optimally suited for homes in cooler regions of Australia, such as Tasmania or the Southern Highlands, where its performance at low temperatures will be beneficial.

A family size of 3 to 6 people will find its tank sizes ideal for their hot water needs.

7. EvoHeat Evo270-1 Heat Pump

The EvoHeat Evo270-1 is a product of Australian engineering that is an integrated all-in-one heat pump solution combining energy efficiency with smart technology.

It has a 270L tank capacity and suits medium to large-sized homes. It is supplied with an easy-to-use LCD touch screen controller and features the option of Wi-Fi connectivity for remote monitoring and control.

Pros:

  • Takes a COP of 3.9 to 4.2, resulting in high energy savings.
  • Fitted with an LCD touch screen and Wi-Fi connectivity as an option, for easy usage.
  • Operates at as low as 36 dB to reduce disturbance.
  • Designed to operate effectively in the Australian climate.
  • Promises a 6-year tank, 5-year compressor and parts, and 1-year on-site labour warranty.

Cons:

  • Although increasingly popular, EvoHeat is a relatively younger brand out there.
  • Since it is an all-in-one system, it needs enough space for installation.

Who is this product perfect for?

The EvoHeat Evo270-1 is perfect for tech-savvy homeowners who value energy efficiency as well as newer technology.

It is particularly helpful for families of 3 to 5 people who reside in various Australian climates because of its adaptive design. Individuals who would like to integrate their hot water system with home automation technology will appreciate the optional Wi-Fi feature.

Benefits Compared to Electric and Gas Systems

Heat pump water systems are energy efficient. In contrast to direct electric resistance or gas systems, heat pumps pull heat out of the ambient air—consuming up to 70% less energy.

This equates to:

  • Lower electricity bills
  • Reduced carbon emissions
  • Eligibility for government rebates and incentives

They may have a higher upfront cost, but the long-term savings and environmental benefits make them a smarter investment.

Key Factors to Consider Before Buying

Energy Efficiency (COP Ratings)

The Coefficient of Performance (COP) is a measure of the efficiency of a system. A 3.0 COP is where the device generates three times more heat energy than the electrical energy it uses. Opt for units with a high COP to save more in the long run.

Storage Capacity (for Small vs. Large Families)

  • Small households (1–2 people): A 150–200L capacity is usually sufficient.
  • Medium households (3–4 people): 200–300L is recommended.
  • Large families (5+ people): Look for systems above 300L to avoid running out of hot water.

Noise Levels

Heat pump systems use a compressor and fan, which may generate noise. Quiet models operate around 40–50 decibels—roughly the level of a modern fridge. Always check noise ratings if you plan to install the unit near bedrooms or living areas.

Brand Reputation and Warranty

A reputable brand ensures reliability, service availability, and support. Look for manufacturers offering:

  • At least 5–10 years warranty on tanks
  • 2–5 years on the compressor or electrical components
  • Accessible customer service and repair options

Installation Cost and Eligibility for Rebates

Installation can range from $500 to over $2,000, depending on location, access, and plumbing needs. Many regions offer rebates for installing energy-efficient systems, which can significantly reduce upfront costs. Always check eligibility before purchasing.

Climate Suitability (Cold vs. Warm Regions)

Heat pumps perform best in mild to warm climates. In colder regions, look for models designed with:

  • Active defrost cycles
  • Back-up electric elements
  • Insulated tanks

This ensures optimal performance even when outdoor temperatures drop below freezing.

Expert Tips: Choosing the Right Unit for Your Home

When to Go for High-Capacity

Opt for a larger unit if:

  • You have a big household
  • You use hot water for multiple tasks simultaneously (e.g., showering and washing)
  • You expect high demand during peak times

Choosing Based on Climate

  • Warm climates: Most models will perform efficiently.
  • Cold climates: Choose systems with integrated defrost mechanisms and enhanced insulation.

Matching Energy Efficiency with Household Habits

Families with high hot water usage benefit most from higher COP systems. Consider:

  • Time-of-use tariffs (running the unit during off-peak hours)
  • Solar PV integration to further reduce costs

Heat Pump Water Heaters: Common Questions Answered

Do heat pump systems work at night or in winter?

Yes, though efficiency may decrease in colder weather. Many systems include a backup element to maintain performance.

How long do they last?

With proper maintenance, heat pump water heaters can last 10–15 years or more.

Are they noisy?

Some models produce noise similar to a refrigerator. Quiet brands and proper placement can minimise disturbances.

Is maintenance required?

Occasional servicing, such as cleaning filters and checking the compressor, ensures optimal performance and longevity.

Can they be powered by solar panels?

Yes, many households pair heat pump systems with solar PV for maximum efficiency and cost savings.

Best Heat Pump Water Heater Based on Purpose

1) iStore 270L Heat Pump

Best for: Solar Integration & Value for Money

  • Why it’s best: Designed for easy integration with rooftop solar PV systems and offers one of the best price-to-performance ratios.
  • Tank size: 270L
  • Features:
    • 4 operating modes (including vacation and hybrid)
    • Built-in smart controller
    • Government rebates available
  • Ideal for: Homes with solar panels looking for affordable, energy-smart hot water

2) Reclaim Energy CO₂ Heat Pump Hot Water System

Best for: Smart Control & Customisation

  • Why it’s best: Offers advanced timer-based control and exceptional integration with solar systems. It uses CO₂ refrigerant for low environmental impact, but with more programmable features.
  • Tank sizes: 160L, 250L, 315L, 400L
  • Features:
    • Highly customisable heating schedules
    • Integrates well with solar PV
    • Extremely energy-efficient (up to 80% energy savings)
  • Ideal for: Tech-savvy or solar-equipped homes that want maximum control and flexibility

3) Rinnai Enviroflo Heat Pump

Best for: Affordability & Trusted Brand Support

  • Why it’s best: A budget-friendly, reliable option from a well-known brand with broad service availability across Australia.
  • Tank size: 250L
  • Features:
    • Quiet operation (48 dB)
    • Operates in temperatures as low as -7°C
    • 6-year cylinder and 5-year heat pump warranty
  • Ideal for: Budget-conscious households looking for brand-backed reliability and a broad installer network

Conclusion- heat pump hot water systems in Australia

Heat pump hot water systems provide an energy-efficient and environmentally friendly solution for domestic hot water heating needs. When choosing a system, key factors to consider are capacity, energy rating, performance in colder conditions, tank type, and warranty terms.

The Ecogenica 245L provides an attractively priced option with generous tank capacity. For larger families, the Emerald All-In-One 300L is a seamlessly integrated solution. The Emerald 270L Split offers maximum installation flexibility.

Those who want smart features should look at the iStore 270L. For cold climates, the Reclaim Energy 315L utilises advanced frost protection.

Consider your hot water requirements, climate, and budget when selecting the heat pump water heater that can best meet your needs. With their exceptional efficiency and green credentials, heat pumps are a smart investment that pays back through energy savings over time.

Frequently Asked Questions Answered

What is the best heat pump hot water system for a family of 4?

For a typical family of 4, a 270L system such as the Rheem, Emerald, or iStore 270L is ideal. These models balance efficiency, capacity, and reliability for mid-sized households.

What heat pump is most suitable for commercial or high-demand use?

For commercial settings or large households, the Reclaim 315L or Ecogenica 300L models offer higher capacity and excellent performance, especially when a consistent hot water supply is critical.

Which heat pump works best in colder climates?

The Emerald 270L Split and Reclaim Energy heat pumps are designed for superior performance in low ambient temperatures (down to -15°C), making them ideal for cold regions.

What is the quietest heat pump hot water system available?

The Reclaim and iStore systems are known for their ultra-quiet operation, making them suitable for homes with close neighbours or limited outdoor space.

Which heat pump is best for a small home or apartment?

The iStore 180L or Ecogenica 200L models are compact and efficient, making them great for smaller households or spaces with limited installation area.

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E-Green Electrical

E-Green Electrical is a top tier energy efficiency company based in Sydney. We focus on utilising government rebates to help reduce our clients energy consumption by installing energy efficient solutions. E-Green boasts a rich heritage within the realm of energy efficiency, consistently staying up to date with cutting-edge technologies to deliver optimal results for our valued customers.

We don't just sell products and services; we also provides tips and information on how to help reduce energy consumption. We believe in using energy wisely and teaching others how to do the same. For E-Green, it’s important to share knowledge with the community. That's why we regularly write articles about saving energy, new government rebates available and increasing sustainability.

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