The iNHEAT 9kW Inverter Pro Heat Pump provides energy-efficient heating for hot tubs and small swim spas. Featuring full inverter technology, ultra-quiet performance and a COP of up to 13, it delivers powerful year-round heating while helping to reduce running costs.
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£1,999
| iNHEAT 9kW Inverter Pro — Technical Characteristics | ||
|---|---|---|
| Air 15°C Water 26°C Humidity 70% |
Heating Capacity | 1.6 ~ 6.7 kW |
| Power Input | 0.21 ~ 1.34 kW | |
| COP | 7.7 ~ 5.0 | |
| Air 26°C Water 26°C Humidity 80% |
Heating Capacity | 1.9 ~ 9.2 kW |
| Power Input | 0.13 ~ 1.28 kW | |
| COP | 14.71 ~ 6.24 | |
| Air 35°C Water 28°C Humidity 80% |
Cooling Capacity | 1.8 ~ 4.6 kW |
| Power Input | 0.28 ~ 1.20 kW | |
| EER | 7.46 ~ 4.47 | |
| Power Supply | 230V ~ / 50Hz (Single Phase) | |
| Max Current | 7.24 A | |
| Water Flow | 3–5 m³/h | |
| Refrigerant | R32 | |
| Pressure | 1.5 / 4.15 MPa | |
| Operating Air Temperature | -15 ~ 43 °C | |
| Compressor | Toshiba Rotary | |
| Waterproof Rating | IPX4 | |
| Unit Dimensions | 950 × 410 × 800 mm | |
| Package Dimensions | 860 × 330 × 668 mm | |
| Noise at 1m | 38.1 ~ 47.2 dB(A) | |
| Noise at 10m | 20.5 ~ 27.9 dB(A) | |
The iNHEAT 9kW Inverter Pro is a high-performance air source heat pump designed to heat hot tubs and swim spas more efficiently in UK conditions.
Using inverter technology, it adjusts output automatically to maintain a stable water temperature while helping reduce electricity use and running costs.

Automatically modulates output to maintain water temperature efficiently and help reduce running costs.

High efficiency performance (COP up to 14.71 in test conditions) for more economical heating.

Low noise levels designed for outdoor living spaces and UK gardens (38.1–47.2 dB(A) at 1m).

Designed to operate in colder weather with an operating air range of -15°C to 43°C.

Reliable Toshiba rotary compressor design for efficient, consistent performance.

Uses eco-friendly R32 refrigerant for modern efficiency and reduced environmental impact.

Space-saving design for easier placement (Unit: 950 × 410 × 800 mm).

IPX4 splash-resistant rating for outdoor installations and long-term use.
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