18kW Inverter Pool Heat Pump | R32 | Single Phase | Free NZ Delivery
The 18kW Inverter Pool Heat Pump is an energy-efficient heating solution for medium to large residential swimming pools in New Zealand. Inverter technology automatically adjusts output to match demand, delivering steadier water temperatures, quieter operation, and lower running costs compared to fixed-speed systems. Free nationwide delivery to any address included. Installation by a qualified electrician and plumber is required and not included. Best suited to
- Pool volume with cover. 50,000L to 80,000L
- Pool volume without cover. 40,000L to 65,000L
- Use case. Summer plus shoulder-season swimming
- Ideal for. Homeowners wanting efficient, low-cost heating with quieter operation Pool cover strongly recommended. A thermal pool cover reduces heat loss, improves efficiency, and lowers ongoing running costs significantly. Final sizing depends on pool volume, exposure, wind, location, and desired temperature. Key features
- Inverter technology. Adjusts output automatically for efficiency and steady water temperature
- R32 refrigerant. More efficient and lower-impact than older refrigerants
- Heating capacity. 3.1 to 18.01kW at Air 27°C / Water 26°C
- Shoulder-season performance. 2.4 to 13.8kW at Air 15°C / Water 26°C
- Operating range. -7°C to 43°C air temperature
- Sound pressure. 49.2 to 52.5 dBA at 1m
- Warranty. 3-year parts, 5-year compressor Technical specifications
- Model reference. WH000643
- Refrigerant. R32
- Power supply. 220 to 240V / 50Hz, single phase
- Rated input power. 4.96kW
- Max current. 15.72A
- Water connections. 40mm
- Minimum water flow. 7.4 m³/hr
- Max water pressure drop. 6kPa
- Fan speed. 500 to 750 rpm
- Compressor. Inverter
- Dimensions (L x W x H). 1002 x 453 x 767.5mm
- Net weight. 59kg Performance data
- Air 27°C / Water 26°C / Humidity 80%. Heating 3.1 to 18.01kW, COP 13.0 to 5.68
- Air 15°C / Water 26°C / Humidity 70%. Heating 2.4 to 13.8kW, COP 7.4 to 4.7
- Cooling at Air 35°C / Water 29°C / Humidity 70%. 4.41 to 7.65kW, EER 2.89 to 2.50 Frequently asked questions
- Is this suitable for pools? Yes, well suited to medium to large residential pools for extended season swimming.
- Is installation included? No. A qualified electrician and plumber are required. if you need a recommendation.
- Is a pool cover recommended? Yes, strongly. It reduces heat loss and improves efficiency significantly.
- What warranty is included? 3-year parts warranty and 5-year compressor warranty.
Not sure if the 18kW is the right size for your pool? Contact our team and we will help you choose the right unit.