At a Glance: Quantum Energy Heat Pump Scores 2.0 of 5
Scoring is based on the Solar Choice Heat Pumps Score Card which applies a consistent methodology across price, company backing, warranty, customer reviews and functionality to compare hot water heat pumps available in the Australian market.
- Company Backing and Trust – 3/5: Quantum Energy is an Australian heat pump specialist with more than 20 years in the market. The company focuses on residential and commercial heat pump hot water systems and has Australian-based operations and support. However, it is smaller and less diversified than major multinational appliance brands, so it receives a mid-tier score for company backing on the Solar Choice scorecard.
- Warranty – 2/5: Quantum’s current published warranty for its domestic heat pump range is 5 years on the tank and 2 years on electrical and refrigeration components. That remains shorter than some competing heat pump brands, especially on the parts most likely to matter if repairs are needed after the first few years. For homeowners comparing long-term peace of mind, this is one of Quantum’s weaker areas on the Solar Choice scorecard.
- Customer Reviews – 1/5: Solar Choice currently has no customer reviews listed for Quantum heat pumps, but third-party public review sentiment is weak. ProductReview shows Quantum Energy AC4 Series at 2.3 out of 5 from 76 reviews, with recurring complaints around reliability and support, so Quantum scores 1/5 for customer reviews on the Solar Choice scorecard.
- Functionality: The heat pumps operate in a wide range of temperatures (-15°C to +40°C), offer stainless steel tank options and use environmentally friendly R290 refrigerant. However, they are loud compared to others on the market at 48dB and lack many key features like a heating element, LCD screen and Wi-Fi App control. Score: 2 points
Company Background
Quantum Energy Heat Pump Model and Ranges

- Quantum 150L Heat Pump (Model 150-08AC6-290): With a storage size of 150L and a rated delivery of 130L, this model offers a heating output of 3.61kW and a Coefficient of Performance (COP) of 4.3. Suitable for small households of up to 3 people.
- Quantum 200L Heat Pump (Model 200-08AC6-290): Featuring a 200L storage capacity and 175L rated delivery, it shares the same heating output and COP as the 150L model. Ideal for small to medium households of up to 4 people.
- Quantum 270L Heat Pump (Model 270-08AC6-290): This model provides a 270L storage size and 250L rated delivery, with a slightly higher heating output of 3.81kW and a COP of 4.53. Designed for average households of up to 5 people.
- Quantum 340L Heat Pump (Model 340-08AC6-290): The largest in the range, offering 340L storage and 315L rated delivery, with the same heating output and COP as the 270L model. Best suited for larger households of up to 7 people.
What’s the Cost of Quantum Energy Heat Pumps?
Quantum Energy Heat Pump – Review of Features
Energy Efficiency
Environmentally friendly Refrigerant Type
Operating Temperature Range
Loud Noise Level
No Booster Heating Element
No LCD Screen or Wifi Controller
Quantum Heat Pump Warranty Details Review
Warranty coverage is an important factor when comparing heat pump hot water systems, particularly for homeowners looking for long-term reliability and protection against repair costs. Quantum’s domestic heat pump range currently provides 5 years warranty on the tank and 2 years on electrical and refrigeration components, with labour included within those same warranty periods.
This means that if a covered fault occurs during those timeframes, both the replacement parts and the labour required to repair the unit are covered under the manufacturer warranty. While the 5-year tank warranty is reasonable for the category, the 2-year cover on electrical and refrigeration components is shorter than some competing heat pump brands, which may offer longer protection on key components. As a result, Quantum scores lower on the Solar Choice warranty scorecard compared with brands offering more comprehensive coverage.
The following manufacturer documents provide the detailed warranty terms and specifications for each model in the Quantum domestic heat pump range:
| Quantum Model | Tank Warranty | Electrical & Refrigeration Components | Official Warranty & Specification Document |
|---|---|---|---|
| Quantum 150L Heat Pump | 5 years | 2 years | Warranty and specs doc for 150L heat pump |
| Quantum 200L Heat Pump | 5 years | 2 years | Warranty and specs doc for 200L heat pump |
| Quantum 270L Heat Pump | 5 years | 2 years | Warranty and specs doc for 270L heat pump |
| Quantum 340L Heat Pump | 5 years | 2 years | Warranty and specs doc for 340L heat pump |
These documents outline the full warranty conditions, including installation requirements, operating conditions and water quality limits that must be met for the warranty to remain valid. Homeowners should review the manufacturer documentation or speak with their installer to ensure the system is installed within Quantum’s guidelines.
Overall, Quantum’s warranty structure provides reasonable coverage for the tank but more limited protection for key components, which is why it receives a 2/5 score on the Solar Choice heat pump scorecard.
Pros and Cons of Quantum Heat Pumps
Pros:
- Wide Operating Temperature Range: Suitable for varied climates, maintaining efficiency from -10°C to +40°C.
- Environmental Benefits: Use of R290 refrigerant with lower environmental impact.
- Stainless Steel Tank and Sizing: Quantum heat pumps come in stainless steel tanks with vitreous enamal lining and offer a number of tank sizes ranging up to 340L.
Cons:
- Lack of Features: Missing key functionalities like heating element, LCD screen and Wi-Fi App control.
- Noise Levels: Slightly higher operating noise levels compared to some other models in the market.
- Weak Third-Party Review Sentiment: Public review sentiment remains poor, with ProductReview showing Quantum Energy AC4 Series at 2.3 out of 5 from 76 reviews.
Quantum Energy Domestic Heat Pump Models
| Feature | 150L Heat Pump | 200L Heat Pump | 270L Heat Pump | 340L Heat Pump |
|---|---|---|---|---|
| Model | 150-08AC6-290 | 200-08AC6-290 | 270-08AC6-290 | 340-08AC6-290 |
| Storage Size | 150L | 200L | 270L | 340L |
| Rated Delivery | 130L | 175L | 250L | 315L |
| Heating Output | 3.61 kW | 3.61 kW | 3.81 kW | 3.81 kW |
| Power Input | 0.84 kW | 0.84 kW | 0.84 kW | 0.84 kW |
| Coefficient of Performance (COP) | 4.3 | 4.3 | 4.53 | 4.53 |
| Compressor | Rotary | Rotary | Rotary | Rotary |
| Refrigerant | R290 | R290 | R290 | R290 |
| Electrical Supply | 220–240V / 50Hz / 1Ph | 220–240V / 50Hz / 1Ph | 220–240V / 50Hz / 1Ph | 220–240V / 50Hz / 1Ph |
| Circuit | 10 Amps | 10 Amps | 10 Amps | 10 Amps |
| Water Connections | RC3/4” | RC3/4” | RC3/4” | RC3/4”* |
| PTR Valve Setting | 850 kPa | 850 kPa | 850 kPa | 850 kPa |
| Expansion Control Valve (ECV) Setting | 700 kPa | 700 kPa | 700 kPa | 700 kPa |
| Pressure Limiting Valve (PLV) Without ECV | 500 kPa | 500 kPa | 500 kPa | 500 kPa |
| PLV With ECV Fitted | 350–500 kPa | 350–500 kPa | 350–500 kPa | 350–500 kPa |
| Operating Sound Level | 50 dB | 50 dB | 48 dB | 48 dB |
| Dimensions (Height x Diameter) | 1620 x 540 mm | 1950 x 540 mm | 1900 x 650 mm | 2200 x 650 mm |
| Nett (Empty) Weight | 100 kg | 115 kg | 135 kg | 170 kg |
| Ambient Operating Temperature | -10°C to +40°C | -10°C to +40°C | -10°C to +40°C | -10°C to +40°C |
| Water Temperature Setting | 58°C | 58°C | 58°C | 58°C |
| Maximum Tank Temp Setting | 60°C | 60°C | 60°C | 60°C |
| Hot Water Production Rate | 72 L/hr | 72 L/hr | 75 L/hr | 75 L/hr |
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