VRF
Next-Generation Climate Solutions

Advanced VRF Climate Control for Commercial & Industrial Spaces Wide operating range, ultra-efficient DC inverter, and flexible combinations up to 144HP

DC Inverter Technology
Up to 144HP Capacity
Wide Operating Range
Flexible Combinations

Precision Engineering for Maximum Comfort and Energy Efficiency

Variable Refrigerant Flow (VRF) Systems: The Smart HVAC Solution You Need

VRF Specifications at a Glance

Feature Specification Benefit
Airflow Volume
11,000 – 120,000 m³/h Flexible for small to large spaces
Cooling Capacity
25.2 – 360.0 kW Strong cooling for various buildings
Heating Capacity
27.0 – 404.0 kW Reliable warmth year-round
Sound Pressure Level
53 – 73 dB(A) Quiet and comfortable operation
Operating Temp. Range
Cooling: –5°C ~ 55°C
Heating: –30°C ~ 27°C
Stable performance in extreme climates

What is Variable Refrigerant Flow (VRF)?

Variable Refrigerant Flow (VRF) is a smart heating and cooling system. It works like many small air conditioners connected to one big outdoor unit, with each indoor unit running at different speeds and temperatures.

Instead of cooling or heating the entire building, VRF sends the right amount of refrigerant to each room—saving energy and money while keeping everyone comfortable.

VRF systems are like having a personal climate control assistant for every room in your building.

How Does VRF Work?

1

Smart Control

Sensors check each room's temperature

2

Refrigerant Flow

Right amount of refrigerant sent to each indoor unit

3

Temperature Adjustment

Rooms reach perfect comfort levels

4

Energy Saving

System only uses the energy it needs

Your Trusted Partner for Global VRF Projects

At SongXin, we design Variable Refrigerant Flow (VRF) systems that go beyond conventional HVAC. Built for high-rise buildings, commercial complexes, and modern living spaces, our VRF solutions combine cutting-edge engineering with practical reliability.

Proven Quality Standards

Each unit is manufactured under a strict quality framework and independently certified to ensure consistent, long-term performance.

End-to-End Project Support

From initial design consultation to post-installation service, our team ensures smooth implementation and dependable system operation.

Worldwide Delivery Network

With established logistics partners in more than 40 countries, we guarantee secure transport and on-time delivery for projects of any scale.

Specialized Engineering Expertise

Our technical experts provide tailored design guidance, helping customers maximize energy savings, comfort, and system integration.

SongXin VRF System Technical Specifications

SongXin VRF systems deliver efficient, flexible, and intelligent HVAC solutions tailored for commercial and industrial applications. They include both outdoor and indoor units designed to ensure high performance, energy efficiency, and long-term reliability.

Technical Specifications – SongXin Outdoor Unit

High-performance outdoor units with modular design, wide temperature range, and excellent energy efficiency.

Parameter Range (Standard Models)
Cooling Capacity 25.2 kW – 360.0 kW
Heating Capacity 27.0 kW – 404.0 kW
Power Input (Cooling) 5.4 kW – 92.1 kW
Power Input (Heating) 6.8 kW – 110.7 kW
IPLV (C) Up to 10.0
APF 3.5 – 5.5
Airflow Volume 11,000 m³/h – 120,000 m³/h
Operating Voltage 380V / 3Ph / 50Hz
Dimensions (W×D×H, mm) 1340×845×1780 – 1900×845×1780
Net Weight 215 – 1920 kg
Refrigerant R410A
Sound Pressure Level 53 – 73 dB(A)
Operating Temp. Range Cooling: –5°C ~ 55°C / Heating: –30°C ~ 27°C
Max. Connected Indoor Units Up to 80 (single system)
Modular Combination Flexible combinations of 2, 3, or 4 outdoor units; maximum system capacity up to 144HP

Note: Parameters above are typical ranges across models (8HP–144HP). Customization available upon request.

Technical Specifications – SongXin Indoor Units

A full range of indoor units to meet various layout and comfort needs, offering quiet and reliable performance.

Wall-Mounted Unit

Compact and elegant wall-mounted units designed for small rooms and offices. They provide quiet operation, rapid cooling, and precise temperature control for all-season comfort.

Cooling Capacity
2.2 – 8.0 kW
Heating Capacity
2.5 – 9.0 kW
Airflow
300 – 1000 m³/h
Static Pressure
Noise Level
28 – 45 dB(A)
Dimensions (W×H×D)
790×275×200 ~ 1200×330×250 mm
Weight
9 – 18 kg

360° Cassette (Four-Way Ceiling Type)

The 360° cassette ensures uniform airflow in every direction, maintaining balanced cooling and heating across open spaces such as retail areas, meeting rooms, and lobbies.

Cooling Capacity
2.8 – 16.0 kW
Heating Capacity
3.2 – 18.0 kW
Airflow
800 – 1700 m³/h
Static Pressure
20 – 50 Pa
Noise Level
31 – 47 dB(A)
Dimensions (W×H×D)
840×840×246 ~ 950×950×290 mm
Weight
20 – 35 kg

One-Way / Two-Way Cassette

Efficient and space-saving cassette units that deliver directional airflow, ideal for corridors, offices, or long narrow spaces with suspended ceilings.

Cooling Capacity
1.8 – 7.1 kW
Heating Capacity
2.0 – 8.0 kW
Airflow
300 – 1200 m³/h
Static Pressure
Noise Level
28 – 45 dB(A)
Dimensions (W×H×D)
970×570×200 ~ 1200×650×220 mm
Weight
15 – 28 kg

Duct Type Units (Standard & High Static Pressure)

Concealed duct units offering flexible air distribution through ducts. High static pressure options support long-distance airflow, ideal for large commercial and industrial spaces.

Cooling Capacity
1.8 – 56.0 kW
Heating Capacity
2.0 – 62.0 kW
Airflow
500 – 5400 m³/h
Static Pressure
30 – 300 Pa
Noise Level
28 – 65 dB(A)
Dimensions (W×H×D)
700×450×200 ~ 2200×1000×500 mm
Weight
18 – 150 kg

Fresh Air Handling Unit

Introduces filtered outdoor air to improve indoor air quality while balancing temperature and humidity. Suitable for offices, schools, and industrial environments.

Cooling Capacity
15.5 – 56.0 kW
Heating Capacity
16.5 – 60.0 kW
Airflow
200 – 16000 m³/h
Static Pressure
100 – 350 Pa
Noise Level
30 – 65 dB(A)
Dimensions (W×H×D)
1000×600×600 ~ 2200×1200×900 mm
Weight
50 – 350 kg

Total Heat Exchanger (ERV)

Energy recovery ventilators exchange heat between supply and exhaust air, enhancing energy efficiency and maintaining a comfortable indoor climate year-round.

Airflow
200 – 16000 m³/h
Heat Recovery Efficiency
≥70%
Static Pressure
80 – 300 Pa
Noise Level
30 – 65 dB(A)
Dimensions (W×H×D)
750×500×250 ~ 2600×1400×850 mm
Weight
30 – 200 kg

Temperature-Controlled Jet / Duct / Cabinet Units

High-capacity units engineered for large spaces requiring powerful airflow and accurate temperature control, such as factories, workshops, and exhibition halls.

Cooling Capacity
28.0 – 190.0 kW
Heating Capacity
30.0 – 200.0 kW
Airflow
5000 – 45000 m³/h
Static Pressure
200 – 500 Pa
Noise Level
50 – 75 dB(A)
Dimensions (W×H×D)
1700×1040×470 ~ 3500×1600×1500 mm
Weight
200 – 800 kg

Modular Air Handling Unit (Industrial)

Customizable modular systems for large-scale air treatment. Ideal for cleanrooms, hospitals, and industrial facilities with strict environmental control requirements.

Cooling Capacity
8.0 – 226.0 kW
Heating Capacity
9.0 – 250.0 kW
Airflow
1000 – 100000 m³/h
Static Pressure
100 – 800 Pa
Noise Level
40 – 75 dB(A)
Function Sections
Pre-filter, Medium filter, Coil, Fan, Humidifier, Heater, Silencer, UV Sterilizer, etc.
Dimensions
Modular, customizable
Weight
Depending on configuration

Flexible Payment & Reliable Delivery

Shipping & Logistics

  • Global Network

    Trusted sea, air, and land freight partners ensure safe and timely transport.

  • Customizable Terms

    Multiple trade options available, including EXW, FOB, CIF, and DDP.

  • Quick Dispatch

    Most VRF units are ready to ship within 7–15 days.

Payment Options

  • Multiple Methods

    Accepting T/T, L/C, and Western Union for small-volume orders.

  • Clear Terms

    Standard policy of 30% deposit with the 70% balance due before shipment.

Comprehensive Support for SongXin VRF Systems

We provide complete services to ensure smooth project execution and long-term satisfaction:

Free Consultation

Professional guidance on product selection, system design, and project feasibility.

Pre-Sales Assistance

Fast responses, detailed technical drawings, and tailored solution designs.

OEM & Tailored Solutions

Custom branding and designs for concealed fan coil units to meet market-specific needs.

Factory Tour

Full transparency with access to our 10,000㎡ production facility for client inspections.

Installation Guidance

On-site or remote support for proper setup and optimal performance.

Logistics & Shipping

Secure warehousing and global delivery solutions to ensure timely project completion.

After-Sales Support

Remote troubleshooting, spare parts supply, and rapid technical assistance.

Training & Education

Technical programs for installers, distributors, and end-users to maximize system efficiency.

SongXin Variable Refrigerant Flow – Commitment to Quality

At Songxin HVAC Manufacturing Base, every VRF outdoor and indoor unit is produced under strict quality management:

Advanced Production Lines

Automated coil production, intelligent brazing, and assembly workshops ensure high precision.

Material Selection

Only premium-grade copper tubing, galvanized steel panels, and eco-friendly refrigerants (R410A, R32) are used.

In-Process Testing

Each unit undergoes refrigerant leakage tests, performance calibration, and safety inspections at every stage.

Final Run Test

Before delivery, all VRF systems are tested under simulated operating conditions to guarantee efficiency and reliability.

Discover the Benefits of SongXin VRF Systems

SongXin VRF delivers efficient, reliable, and comfortable climate control with advanced technology and flexible installation. Explore the key features and advantages that make SongXin VRF the smart choice for any project.

Category Key Features Benefits
Strong Performance
  • High-efficiency DC inverter compressor with vapor injection
  • Wide operating range: -30℃ heating, 55℃ cooling
  • Triple sub-cooling technology
  • Large-diameter axial fan
  • Stable heating in ultra-low temperatures
  • Strong cooling capacity in high ambient conditions
  • Improved system efficiency and reliability
  • Quiet yet powerful airflow
High Efficiency & Energy Saving
  • APF up to 5.5, IPLV up to 10.0
  • Dual C-type heat exchanger + inner-grooved copper tubes
  • Intelligent frequency conversion, 0–480 Hz
  • Automatic load adjustment
  • Exceeds first-class energy efficiency standards
  • Significant reduction in energy consumption
  • Lower operational cost for building owners
Stable & Reliable Operation
  • Six-level oil control technology
  • Multi-level backup: compressor, fan, outdoor units
  • Anti-corrosion coating and all-weather protection
  • Multiple safety protections (over-voltage, over-current, surge, phase loss, etc.)
  • Ensures long-term reliability
  • Prevents unexpected downtime
  • Adaptable to harsh environments
  • Peace of mind with comprehensive safety system
Comfort & Healthy Environment
  • Fast cooling/heating response – 60s to full load
  • Precision temperature control ±0.5℃
  • Low-noise operation and night mode
  • Fresh air intake + purification filters
  • Gentle airflow design
  • Quick comfort without waiting
  • Stable indoor temperature
  • Quiet and healthy living environment
  • Clean, purified air quality
Intelligent O&M Control
  • Memory function & auto-recovery after power failure
  • Remote monitoring & smart diagnostics
  • Auto refrigerant detection & charging
  • Smart defrost technology
  • Easy system management
  • Reduced maintenance time
  • Lower service costs
  • Enhanced reliability and uptime
Easy Installation & Maintenance
  • Extra-long piping design up to 1100m
  • Outdoor unit static pressure up to 130Pa
  • Modular compact design for flexible installation
  • No equalizing oil pipe required
  • Commissioning software support
  • Flexible design for various building layouts
  • Suitable for complex engineering projects
  • Saves installation space and cost
  • Faster project delivery

Applications of Songxin VRF System

Offices & Business Centers

Recommended Units: 360° cassette, slim duct type
Reason:

Provide uniform airflow and quiet operation; support independent zone control for different office areas, creating a comfortable and productive working environment.

Hotels & Hospitality

Recommended Units: Wall-mounted, four-way cassette, console units
Reason:

Compact design for guest rooms, easy ceiling or wall installation; allow independent control in each room for personalized comfort and energy savings.

Luxury Homes & High-Rise Apartments

Recommended Units: Wall-mounted, concealed duct units
Reason:

Save indoor space while maintaining interior aesthetics; provide low-noise operation and flexible zoning, ensuring comfort in living rooms, bedrooms, and other spaces.

Shopping Malls & Retail Spaces

Recommended Units: High static pressure duct units, air handling units
Reason:

Deliver strong airflow and wide coverage for large open spaces; compatible with fresh air treatment to improve customer comfort.

Restaurants & Cafés

Recommended Units: Four-way cassette, fresh air units
Reason:

Maintain stable temperature despite frequent door openings; ceiling-mounted design integrates seamlessly with modern restaurant interiors.

Schools & Educational Facilities

Recommended Units: Cassette units, duct units
Reason:

Ensure stable climate control in classrooms and auditoriums; quiet operation supports learning environments, while centralized management improves energy efficiency.

Hospitals & Clinics

Recommended Units: Fresh air handling units, all-air systems
Reason:

Deliver filtered fresh air and support humidity regulation; maintain hygiene standards for wards, operating rooms, and laboratories.

Factories & Workshops

Recommended Units: High static pressure duct units, floor-standing units
Reason:

Provide strong airflow to cover large spaces with high ceilings; robust design ensures reliable operation under industrial conditions.

Data Centers & IT Rooms

Recommended Units: Precision air handling units
Reason:

Maintain constant temperature and humidity; modular redundancy design ensures reliable protection for sensitive IT equipment.

Frequently Asked Questions (FAQ) About Variable Refrigerant Flow

Our VRF outdoor units can be combined up to 144 HP, supporting large-scale commercial complexes.