4KW Monoblock Ground Source Heat Pump
Brand:RFJ
Model:RFJ-WW-4X
Heating capacity:4KW
Refrigerant:R32/R410
Voltage:220V/1/50Hz
OEM/ODM:Support
Description
High-Efficiency GMCC Rotary Compressor
Powered by a premium GMCC rotary compressor, the RFJ-WW-4X delivers reliable, high-COP heating performance for residential applications. By utilizing constant underground ground-source temperatures, this system cuts energy consumption by up to 60% compared to traditional fossil-fuel or electric heating boilers.
Dual-Side Plate Heat Exchanger Assembly
Equipped with high-efficiency dual-side plate heat exchangers, the RFJ-WW-4X optimizes thermal energy transfer between the ground loop circuit and the indoor water distribution system. This compact water-to-water heat exchanger layout ensures max thermal efficiency within a small footprint.
Built-in Flow Protection & Simple Controller
To safeguard system operation against low water flow or freezing, the RFJ-WW-4X features an integrated internal water flow switch. Paired with an intuitive, user-friendly electronic controller, the unit offers straightforward temperature management and system monitoring.
Applications
Residential Hydronic Space Heating
Ideal for small homes, apartments, and villas utilizing underfloor radiant heating loops or low-temperature panel radiators.
Domestic Hot Water Supply
Serves as a dedicated heat source for domestic hot water storage tanks.
Ground Loop Energy Adaptability
Connects smoothly with vertical borehole ground probes (rock), surface soil horizontal loops, groundwater wells, or surface water lake collectors.
Parameter Table
| Model | RFJ-WW-4X |
| Nominal Heating Capacity | 4 kW |
| Operating Mode | Heating-Only |
| Compressor Type | GMCC Rotary Compressor |
| Power Supply | 220V / 1Ph / 50Hz |
| Refrigerant Options | R32 / R410A |
| Heat Exchanger Type | Dual-Side Plate Heat Exchangers |
| Safety Control | Built-in Water Flow Switch |
| Circulation Water Pump | Not Included |
| Controller Type | Simplified Digital Controller |
Company Profile
Shenzhen Ruifujie Technology Co., Ltd.
Ruifujie is a specialized refrigeration enterprise with over 20 years of industry experience, providing high-performance cooling equipment for global industrial and commercial markets. Our product portfolio includes scroll, reciprocating, rotary, semi-hermetic, and screw compressors, as well as cold storage equipment, quick-freezing systems, and ice machines. Supporting full OEM/ODM customization, Ruifujie supplies clients across Russia, the United States, the United Kingdom, the United Arab Emirates, Saudi Arabia, and other international regions with reliable hardware and ongoing technical support.
16+ Years Experience
Sea-near Factory
Freight Cooperation
Global Shipping
Certifications
FAQ
01.Does the RFJ-WW-4X heat pump include an internal water circulation pump?
02.What electrical power supply is required for the RFJ-WW-4X 4kW model?
03.Which ground source collectors can be connected to this unit?
04.What is the delivery lead time for sample and bulk orders?
05.How are heat pumps packaged for export shipping?
Contact Our engineering team
Contact the Ruifujie engineering team today to receive detailed technical datasheets and a complete quotation within 8 hours by sending your target model (RFJ-WW-4X), required quantity, preferred refrigerant choice (R32 or R410A), ground loop type, and project details directly to our sales department.
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