AquaSolis AQS+ Back Discharge 13kW Inverter Ultra-Quiet Pool & Spa Heat Pump w/ WiFi
Engineered for Silence. Tuned for Efficiency. Built for Australian Pools.
The AQS+ Back Discharge inverter heat pump keeps pool and spa temperatures steady without adding noise or fuss to your outdoor space. It runs quietly, adjusts smoothly, and maintains comfort with less effort — so heating feels handled, not managed.
Its back-discharge airflow draws air from both sides and exhausts out the rear, helping keep sound and airflow directed away from patios, windows, and living areas. That makes it a natural fit for everyday backyards, including tighter equipment areas.
Inverter technology continuously matches output to conditions instead of cycling on and off. The result is more consistent water temperature, calmer operation, and efficient performance across the season — including the ability to cool when needed.
Built for Australian conditions, the AQS+ range uses a corrosion-resistant cabinet, R32 refrigerant, and a titanium heat exchanger for long-term durability. Control stays simple: an on-unit touchscreen for day-to-day use, plus built-in Wi-Fi for control from your phone. Use Boost for faster warm-up, or Silence when you want it to fade into the background.
Benefits
Powered by InverPad Technology
Integrated inverter control and back-discharge airflow, tuned to reduce sound while maintaining stable heating performance.
COP of up to 16
High-efficiency operation through inverter modulation and EEV control, delivering strong output with lower power draw.
Adaptive Inverter Operation
Stepless DC fan and compressor adjustment to match real-time demand for smoother temperature control.
Back-Discharge Airflow Design
Air is drawn from both sides and discharged out the rear to minimise disturbance in entertaining areas and tighter installs.
Quiet Operation
Low operating sound levels for comfortable use near patios, windows, and neighbouring boundaries.
Twisted Titanium Heat Exchanger
Efficient heat transfer with strong corrosion resistance for long-term performance in salt and mineral pools.
Cold Weather Performance
Built to operate across a wide ambient range, maintaining performance in conditions down to -10°C with automatic defrost management.
Spa Heating Capability
Heats up to 40°C for spa and swim spa comfort.
Simple Touch Screen Controller
Clear on-unit control for temperature and modes, with straightforward day-to-day operation.
Key Features
- InverPad Technology: Integrates airflow engineering, inverter control, and acoustic shielding to reduce sound output while maintaining stable performance.
- Inverter Power Supply: Supports efficient modulation to maintain consistent temperature control, with a COP of up to 16.
- Mitsubishi Twin-Rotary Inverter Compressor: Smooth, efficient operation with stable output across changing conditions.
- DC Brushless Fan Motor: Quiet, steady airflow with long service life.
- Wi-Fi Enabled: Control key functions remotely with the InverGO app.
Turn on/off
Set water temperature
Timer scheduling
Heating, cooling, and auto modes
Silence and Boost modes
Live weather display
- Touchscreen Digital Controller: Clear on-unit control with real-time temperature feedback and full mode selection. Includes power-down memory to retain settings after power interruptions.
- Reverse Cycle Heating & Cooling: Year-round temperature control with automatic defrost management.
- Three Operating Modes:
Heating Mode: Set water temperature between 18°C–40°C
Cooling Mode: Set water temperature between 12°C–30°C
Auto Mode: Automatically switches between heating and cooling based on inlet water temperature (12°C–40°C)
- Two Performance Modes:
Silence Mode: 20–80% output with reduced sound output (up to 3dB(A))
Boost Mode: 20–100% output for faster heat-up
- Twisted Titanium Heat Exchanger: Corrosion-resistant heat exchanger backed by a 20-year warranty.
- R32 Refrigerant:
R32 is a high-efficiency refrigerant used in modern pool and spa heat pumps, supporting strong performance with lower environmental impact:
- Low Global Warming Potential (GWP) of 675 (approximately 30% of R410A)
- Lower charge volume supports compact system design
- Back Discharge Airflow: Rear-facing exhaust helps minimise disturbance around the pool area.
- Anti-Corrosion ABS/Aluminum Casing: Durable cabinet construction for harsh outdoor environments.
- Protection System: High/low pressure protection and electrical safeguards for safe operation.
- Australian Electrical Approval: Certified for operation in Australia and New Zealand.
Warranty
- 20 years: Anti-corrosion warranty on the titanium heat exchanger coils
- 7 years: Compressors
- 2 years: Parts
- 1 year: On-site Labour
Specifications
| Model | ASHP13 | ASHP17 | ASHP21 | ASHP28 | ASHP35S |
|---|---|---|---|---|---|
| Performance Condition: Air 27°C/ Water 27°C/ Humidity 80% | |||||
| Heating capacity (kW) | 13.0 | 17.5 | 20.8 | 27.8 | 35.0 |
| COP Range | 14.5-7.0 | 15.6-6.9 | 14.6-7.0 | 15.8-7.2 | 15.3-7.0 |
| Average COP at 50% Speed | 10.4 | 10.9 | 10.9 | 11.0 | 10.6 | Performance Condition: Air 15°C/ Water 26°C/ Humidity 70% |
| Heating Capacity (kW) | 8.9 | 12.3 | 14.3 | 18.8 | 24.0 |
| COP Range | 7.5-4.9 | 7.7-4.9 | 6.9-4.9 | 7.8-4.9 | 7.5-5.0 |
| Average COP at 50% Speed | 6.3 | 6.5 | 6.5 | 6.5 | 6.6 |
| Performance Condition: Air 35°C/ Water 28°C/ Humidity 80% | |||||
| Cooling Capacity (kW) | 6.2 | 8.0 | 10.0 | 11.7 | 16.0 |
| Technical Specifications | |||||
| Air temperature operating range | -10°C～43°C | ||||
| Heating temperature setting range | 18°C～40°C | ||||
| Cooling temperature setting range | 12°C～30°C | ||||
| Ambient air temperature for best performance | between 15°C ~ 25°C | ||||
| Reverse Cycle | Standard | ||||
| WiFi | Standard | ||||
| Heat Exchanger | Twisted Titanium | ||||
| Power Supply | 230V 1 Ph | 230V 1 Ph | 230V 1 Ph | 230V 1 Ph | 400V 3 Ph |
| Electrical Connection | 15A Plug | Hard Wired | Hard Wired | Hard Wired | Hard Wired |
| Rated Input Power (kW) | 0.26-1.80 | 0.32-2.51 | 0.38-2.92 | 0.50-3.84 | 0.65-4.80 |
| Rated Input Current (A) | 1.13-7.83 | 1.39-10.9 | 1.65-12.7 | 2.17-16.7 | 0.94-6.96 |
| Maximum Input Current (A) | 12.0 | 15.0 | 17.0 | 20.0 | 10.5 |
| Power Cord (core/mm² | 3x2.5 | 3x4 | 3x4 | 3x6 | 4x2.5 |
| Sound Level at 1m dB (A) | 40.1-48.7 | 41.1-51.8 | 38.9-52.2 | 41.5-52.9 | 40.6-52.6 |
| Sound Level at 10m dB (A) | 20.1-28.7 | 21.1-31.8 | 18.9-32.2 | 21.5-32.9 | 20.6-32.6 |
| Advised Water Flow (L/Min) | 70-100 | 100-130 | 130-170 | 170-200 | 200-300 |
| Water Connection (mm) | 40mm | ||||
| Net Weight (kg) | 59 | 68 | 74 | 94 | 140 |
| Net Dimension L x W x H (mm) | 890x440x658 | 1060x440x658 | 1060x440x758 | 1060x430x958 | 1310x527x990 |
Remarks: This heat pump is designed to operate effectively within an ambient air temperature range of -10°C to 43°C. Performance outside of this range may not be guaranteed. Please note that heating and cooling output may vary depending on environmental conditions.
Specifications and technical parameters are subject to change without notice as part of ongoing product development and improvements. For the most accurate and current information, please refer to the ID plate on your heat pump.
In The Box
- 1 x Heat Pump Unit
- 2 x Barrel Union 40mm
- 1 x Drainage Kit (hose and fitting)
- 1 x Installation Manual
Basic Heater Sizing Guide for Extended Swimming Season
The table below provides a general guide for sizing your pool heat pump to extend your swimming season from September to April. Please note that many factors influence the correct heater size, and we strongly recommend having a professional sizing assessment completed prior to purchase.
These recommendations are based on average temperatures, humidity, and wind conditions in each listed location.
| 20,000L | 40,000L | 60,000L | 80,000L | |
|---|---|---|---|---|
| Brisbane | 9–13kW | 9–13kW | 13–17kW | 20–21kW |
| Sydney | 9–13kW | 13kW | 20–21kW | 24–28kW |
| Melbourne | 13kW | 20–21kW | 28kW | 35kW |
| Canberra | 13kW | 20–21kW | 28kW | 35kW |
| Hobart | 13kW | 20–21kW | 28kW | 35kW |
| Adelaide | 13kW | 16–17kW | 24–28kW | 35kW |
| Perth | 9–13kW | 16–17kW | 21–24kW | 28kW |
Please Note: This chart is intended as a guide only. It assumes a target water temperature of 28°C for an extended swimming season (Sept–Apr), with an average in-ground pool fitted with a thermal cover, operating for 10 hours per day. Performance may vary depending on factors such as water volume, exposure to wind, shade, soil type, time of year, cover quality, and local weather conditions.
Frequently Asked Questions
How quiet is the AquaSolis AQS+ heat pump?
The AQS+ operates from approximately 40dB(A) at 1 metre in Silence Mode. Sound is directed rearward through the back-discharge airflow system to help reduce disturbance near patios, windows, and living areas.
Can it operate in cold weather?
Yes. The unit is designed to operate within an ambient air range of -10°C to 43°C. Automatic defrost management supports stable winter performance.
Does the AQS+ provide both heating and cooling?
Yes. The AQS+ features reverse cycle operation with heating (18°C–40°C), cooling (12°C–30°C), and Auto Mode for automatic adjustment based on water temperature.
How energy efficient is the AQS+?
With a COP of up to 16, inverter modulation and electronic expansion valve control allow the system to adjust output to match demand, reducing energy consumption compared to traditional on/off systems.
Can it heat a spa or swim spa?
Yes. The unit supports temperature settings up to 40°C, suitable for spa and swim spa applications when correctly sized.
Is Wi-Fi control included?
Yes. Built-in Wi-Fi allows remote monitoring and temperature adjustment via the InverGO App (iOS and Android).
What happens after a power interruption?
The heat pump includes a power-down memory function. Settings are retained and operation resumes automatically once power is restored.
| SKU | SP-ASHP13 |
|---|---|
| barcode | SP-ASHP13 |
| Package Height | 68 cm |
| Package Length | 91 cm |
| Package Width | 45 cm |
| Warranty | 20 Years Heat Exchanger, 7 Years Compressor, 2 Years Parts, 1 Year On-site Labour |
| Manufacturer | AquaSolis |
| Model | ASHP13 - Back Discharge Heat Pump 13kW |
| Specific Product Type | Heat Pump |
| Shipping Type | Standard |
| Heat Capacity (kW) | 13 |
| Power Input | 0.26 - 1.80 kW |
| C.O.P. | 14.5 - 7.0 |
| Max Amps | 12 |
| Connection Type | 15A Plug |
| Water Flow Rate | 70 - 100 L/m |
| Noise (Decibels) | 40.1 - 48.7 at 1m dB (A) |
| Plumbing | 40mm |
