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By tapping into constant underground thermal energy maintained between 4°C and 12°C year-round, this geothermal heat pump delivers clean space heating while reducing energy consumption by up to 60% compared to electric or gas boilers. It transfers natural heat absorbed from the earth into hydronic heating systems, significantly cutting household carbon emissions.
Commercial-Grade Gree Rotary Compressor
Powered by a high-efficiency Gree rotary compressor operating on 380V/3Ph power, this geothermal heat pump provides robust 20 kW thermal output. The industrial-grade motor architecture delivers stable, quiet performance under continuous hydronic heating loads.
Featuring high-efficiency brazed plate heat exchangers on both ground-source and load sides, this geothermal heat pump optimizes heat transfer across closed or open loops. An integrated water flow switch prevents low-flow damage, while the pump-free casing design allows system integrators to size external circulating pumps tailored to specific pipe lengths and head pressure requirements.
Standard Included Components: Gree rotary compressor, dual brazed plate heat exchangers, built-in water flow protection switch, and simplified digital controller.
System Design Notes:
Heating-Only Configuration: Dedicated single-function thermal generator engineered for hydronic space heating.
External Pump Requirement: Built without an internal circulating pump, giving engineers full flexibility to integrate external pump units.
Applications
Commercial & Multi-Family Space Heating: Ideal for large villas, commercial offices, and agricultural facilities utilizing underfloor radiant heating grids, hydronic radiators, or fan coil units.
Versatile Geothermal Ground Loops: Connects to four main geothermal sources: vertical rock boreholes (90-200m depth), shallow ground water wells, lake water circuits, or horizontal surface soil loops (80-100cm depth).
Green Energy Building Upgrades: Replaces fossil-fuel boilers or electric heaters to drastically reduce seasonal heating bills and carbon footprint.
Product Images
Technical Specifications
Parameter
Value
Model
RFJ-WW-20X
Heating Capacity
20 kW
Power Supply
380V / 3Ph / 50Hz
Compressor Type
Gree Rotary Compressor
Refrigerant
R32 / R410A
Heat Exchanger Type
Dual Plate Heat Exchanger
Safety Device
Built-in Water Flow Switch
Water Pump
Excluded
Control System
Simplified Controller
Company Profile
Ruifujie is an established supplier and global B2B exporter in the HVAC and commercial refrigeration industry, bringing over 20 years of precision engineering experience to clients worldwide. Our catalog encompasses scroll, reciprocating, rotary, semi-hermetic, and screw compressors, alongside geothermal heat pumps, cold storage systems, and industrial ice-making machinery. Supporting complete OEM/ODM customization and backed by rigorous factory quality testing, Ruifujie serves engineering contractors and equipment distributors across the United States, Russia, the United Kingdom, the United Arab Emirates, Saudi Arabia, and over 60 countries worldwide.
Packaging and Shipping
Frequently Asked Questions
How does a ground source heat pump like the RFJ-WW-20X generate energy savings?
It absorbs natural, renewable heat stored in subsoil or ground water (maintained at 4°C-12°C year-round) via an anti-freeze fluid loop and transfers it into your indoor heating system, cutting energy costs by up to 60% compared to traditional electrical boilers.
Which geothermal collector systems can be connected to model RFJ-WW-20X?
It is fully compatible with four geothermal sources: deep rock boreholes, open/closed ground water wells, submerged lake heat collectors, or horizontal surface soil piping.
How does the unit protect against hydraulic flow issues in underfloor heating systems?
The unit features an integrated water flow switch that monitors loop fluid movement and automatically stops operation during flow restrictions to safeguard internal plate heat exchangers.
What project parameters are required to receive a formal B2B quotation, and how fast is it issued?
We issue direct factory quotations within 8 hours upon receiving your technical details, including required cooling/heating capacity, supply voltage, refrigerant choice, and operating conditions.
What are your standard delivery lead times for sample orders and bulk production?
In-stock sample units dispatch within 3 business days, while standard mass production orders complete in 10 to 15 working days.
Request Factory Direct Quotations
Upgrade your hydronic heating systems with renewable geothermal heat pumps from Ruifujie. Contact our engineering team today to receive dimensional CAD files, loop connection diagrams, and direct B2B pricing within 8 hours.
Please specify your Model, Quantity, Voltage, Refrigerant, Ground Collector Type, and Project Requirements in your inquiry for an immediate response.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter
Year Established:
2006
Total Annual:
44000000-60000000
Employee Number:
110~115
Ecer Certification：
Verified Supplier
Shenzhen Ruifujie Technology Co., Ltd is a leading supplier of high-quality compressors for a wide range of industries and applications. With over 14 years of experience in the industry, we have built a reputation for
providing exceptional products and services to our customers.
&nb... Shenzhen Ruifujie Technology Co., Ltd is a leading supplier of high-quality compressors for a wide range of industries and applications. With over 14 years of experience in the industry, we have built a reputation for
providing exceptional products and services to our customers.
&nb...
