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To reduce carbon emissions to the environment and curb global warming, an R290 Full DC Inverter Heat Pump has been developed. Compared to R410A refrigerant with a GWP of 2100 and R32 with a GWP of 675, R290 has a GWP of less than 20 and is recognized by the industry as the most eco-friendly refrigerant with high development potential.
The perfect performance of the R290 FULL DC INVERTER Heat Pump meets house heating, cooling, and domestic hot water needs throughout the year. Operating modes include:


Under low ambient temperatures, normal heat pumps often face limited stability. The R290 FULL DC INVERTER unit operates efficiently in extremely cold regions down to -25ºC, maintaining a high COP and outputting 75ºC hot water reliably.

Equipped with a DC Inverter Compressor, Stepless DC Inverter Fan Motor, and DC Inverter Water Circulation Pump. This technology allows the unit to intelligently adjust operating frequency, saving up to 50% energy compared to ON-OFF units and 75% compared to traditional electric boilers.
5-Inches large touch screen with "Smart Life" App support. User-friendly design supports multiple local languages.
Features 4 modes: Powerful, Smart, Silent, and Vacation to optimize energy consumption based on actual needs.
Passed ERP A+++ class tests. Reaches A+++ at both 35°C and 55°C water temperatures with a SCOP up to 4.86.
Uses triple-layer sound insulation and noise reduction technology for smooth, quiet mechanical operation.
The IoT cloud management platform allows remote monitoring via Wi-Fi or DUT. It records all operating parameters, enabling quick synchronization of error reports to service providers for immediate solutions.

| Model | PW030-D/S | PW040-D/S | PW050-D/S | PW040-D | PW050-D | PW060-D |
|---|---|---|---|---|---|---|
| Heating Condition (Ambient 7/6ºC, Water 30/35ºC) | ||||||
| Capacity Range (kW) | 3.2~9.0 | 4.2~11.8 | 5.6~16.0 | 4.2~11.8 | 5.6~16.0 | 7.7~22.0 |
| COP Range | 4.13~4.71 | 4.17~4.75 | 4.21~4.83 | 4.17~4.75 | 4.21~4.83 | 4.21~4.86 |
| DHW Condition (Ambient 7/6ºC, Water 15/55ºC) | ||||||
| Capacity Range (kW) | 2.5~7.2 | 3.3~9.4 | 4.5~12.8 | 3.3~9.4 | 4.5~12.8 | 6.2~17.6 |
| Cooling Condition (Ambient 35/24ºC, Water 12/7ºC) | ||||||
| EER Range | 2.65~3.04 | 2.67~3.06 | 2.71~3.10 | 2.67~3.06 | 2.71~3.10 | 2.73~3.12 |
| ErP Level (35°C) | A+++ | |||||
| Refrigerant | R290 | |||||
| Noise dB(A) | ≤47 | ≤50 | ≤52 | ≤50 | ≤52 | ≤53 |

Established in 2004, this high-tech enterprise focuses on air source heat pump innovation. With a complete industry chain, products include swimming pool units, residential heating/cooling, and industrial high-temperature solutions. The export volume of inverter heat pumps has consistently ranked among the top in the region, serving over 60 countries including Germany, France, and Poland.



Supported by senior engineers and over 500 experienced production personnel, the facility holds more than 80 patents. All products are ISO 9001, ISO 14001, CE, and ERP certified, ensuring the highest standards of quality and environmental protection.




Retro Pumps