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cassette indoor unit

VRF 4-Way Cassette

REF-FWC
The Refria VRF 4-Way Cassette Air Conditioner is a high-performance cassette unit designed for modern VRF air conditioning systems. Featuring 360° airflow distribution, independent louver control, 7-speed fan operation and intelligent comfort functions, it delivers uniform temperature control and enhanced indoor comfort across commercial and residential spaces.

Installed discreetly within suspended ceilings, this 4 way ceiling cassette provides powerful performance while maintaining a clean architectural appearance. The integrated high-lift drain pump, optional human detection sensor and advanced airflow technology simplify installation and improve energy efficiency.

Ideal for hotels, offices, retail stores, schools, meeting rooms and commercial buildings, the Refria VRF cassette unit offers reliable operation, flexible capacity options and seamless integration with centralized VRF systems. Designed for long-term durability and low operating costs, it is an excellent solution for projects requiring efficient and professional climate control.
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VRF Indoor Air Conditioning Solutions
REFRIA VRF 4-Way Cassette Air Conditioner
360° Airflow Cassette Unit for Advanced VRF Systems
The Refria VRF 4-Way Cassette Air Conditioner is engineered for commercial and residential VRF applications that demand uniform air distribution, energy efficiency and elegant ceiling integration. Featuring 360° airflow, individual louver control, multiple fan speeds and intelligent comfort functions, this cassette unit delivers reliable performance in offices, hotels, retail spaces, schools and commercial buildings. As a high-performance 4 way ceiling cassette solution, it combines comfort, aesthetics and installation flexibility.
360°
Airflow Distribution
7
Fan Speeds
1200mm
High Lift Drain Pump
60kBtu/h
Maximum Capacity
What is a 4-Way Cassette Air Conditioner?
A 4 way cassette air conditioner is a ceiling-mounted indoor unit designed for Variable Refrigerant Flow (VRF) systems. Installed flush within suspended ceilings, the unit distributes conditioned air in four directions to provide balanced temperature control throughout the room. Compared with wall-mounted systems, cassette unit offers superior airflow coverage, unobtrusive installation and greater flexibility for commercial applications. The Refria 4 way ceiling cassette series combines advanced airflow technology with energy-efficient operation, making it an ideal solution for modern buildings.
Key Features
🌪️
360° Airflow
The circular airflow path delivers uniform air distribution and consistent indoor temperatures throughout the entire room.
🎯
Individual Louver Control
Each air outlet can be controlled independently, allowing customized airflow patterns for enhanced occupant comfort.
🌬️
7 Fan Speeds
Seven selectable fan speed settings enable precise airflow adjustment for different room conditions.
↕️
Multi-Step Vertical Swing
Airflow angle adjustment from 30° to 65° ensures optimal air delivery for various room layouts.
👤
Human Detect Sensor
Optional occupancy detection automatically adjusts operation based on room usage to improve energy efficiency.
💧
High Lift Drain Pump
Standard 1200mm drain pump simplifies condensate drainage and increases installation flexibility.
Auto Cooling & Heating Changeover
Automatically switches between cooling and heating modes to maintain the selected temperature setting.
🔇
Low Noise Operation
Optimized fan and airflow design help maintain a comfortable indoor environment with minimal noise.
Health & Hygiene Features
Mildew-Proof Heat Exchanger
When the cassette indoor unit stops cooling operation, the fan continues running for a short period to dry the heat exchanger surface. This process helps prevent moisture accumulation and reduces the risk of mold growth, improving indoor air quality and long-term reliability.
Silver Ion Drain Pan (Optional)
Nano-silver ions released from the drain pan help inhibit bacterial and mold growth inside the condensate system, supporting healthier operation of the 4 way cassette air conditioner.
Water Level Switch Protection
Built-in overflow protection monitors condensate levels and automatically activates safety protection if drainage problems occur, helping protect ceilings and interior finishes.
Healthy Air Distribution
The optimized airflow pattern minimizes uncomfortable drafts while maintaining balanced temperature distribution throughout occupied spaces.
Comfort Technology
EEV Automatic Adjustment
During standby and low-load conditions, the electronic expansion valve automatically adjusts refrigerant flow to improve operating stability and reduce refrigerant noise.
Human Detect Sensor
The optional radar sensor automatically detects room occupancy and adjusts operation to optimize comfort while reducing energy consumption.
Two Thermistors Control
Dual temperature sensing technology improves control accuracy by monitoring room conditions from both the indoor unit and wired controller.
Soft Wind Mode
Airflow is directed along the ceiling to create a gentle air distribution pattern, improving comfort and reducing direct air drafts.
Auto Cooling & Heating Changeover
The system automatically selects cooling or heating mode according to room conditions and user settings.
Energy Efficient Operation
Advanced VRF control technology helps reduce operating costs while maintaining precise temperature regulation.
Advanced Airflow Technology
360° Airflow Distribution
The redesigned circular airflow path ensures uniform temperature distribution throughout the room. Compared with conventional cassette unit designs, the effective air supply area is significantly increased.
7-Speed Fan Control
Seven fan speed levels allow users to select the ideal balance between airflow volume, comfort and energy consumption.
Multiple-Step Vertical Swing
The 4 way ceiling cassette supports multiple discharge angles ranging from 30° to 65°, allowing airflow optimization for different room configurations.
Independent Louver Control
Each air outlet can be adjusted independently, enabling customized airflow patterns for offices, meeting rooms, hotels and retail environments.
Why Choose a Refria 4-Way Cassette Air Conditioner?
✓ Uniform 360° airflow for superior comfort
✓ Elegant ceiling-mounted installation
✓ Independent louver control for customized airflow
✓ High-lift drain pump for easier installation
✓ Optional occupancy sensor for energy savings
✓ Silver-ion hygiene options available
✓ Suitable for hotels, offices, retail stores and commercial buildings
✓ Seamless integration with Refria VRF systems
Technical Specifications
The Refria VRF 4-Way Cassette Air Conditioner series is available in capacities ranging from 2.8kW to 18.0kW, providing flexible solutions for commercial and residential VRF applications. Each cassette unit is designed for reliable operation, quiet performance and easy installation.
ModelMI2-09Q4DHN18(At)MI2-12Q4DHN18(At)
Power Supply220-240V / 1Ph / 50-60Hz220-240V / 1Ph / 50-60Hz
Cooling Capacity2.8 kW3.6 kW
Heating Capacity3.2 kW4.0 kW
Airflow Rate790-492 m³/h790-492 m³/h
Sound Pressure30-25 dB(A)30-25 dB(A)
RefrigerantR410A / R32R410A / R32
Unit Dimensions840×204×840 mm840×204×840 mm
Panel Dimensions950×53×950 mm950×53×950 mm
Medium Capacity Models
ModelMI2-15Q4DHN18(At)MI2-18Q4DHN18(At)MI2-24Q4DHN18(At)
Cooling Capacity4.5 kW5.6 kW7.1 kW
Heating Capacity5.0 kW6.3 kW8.0 kW
Airflow Rate910-491 m³/h840-543 m³/h1000-658 m³/h
Sound Pressure37-27 dB(A)33-27 dB(A)37-28 dB(A)
RefrigerantR410A / R32R410A / R32R410A / R32
Unit Dimensions840×204×840 mm840×204×840 mm840×204×840 mm
Large Capacity Models
ModelMI2-28Q4DHN18(At)MI2-32Q4DHN18(At)MI2-36Q4DHN18(At)
Cooling Capacity8.0 kW9.0 kW10.0 kW
Heating Capacity9.0 kW10.0 kW11.2 kW
Airflow Rate1100-616 m³/h1330-783 m³/h1470-811 m³/h
Sound Pressure42.5-30 dB(A)38-29 dB(A)43-33 dB(A)
Extra Large Capacity Models
ModelMI2-40Q4DHN18(At)MI2-48Q4DHN18(At)MI2-56Q4DHN18(At)MI2-60Q4DHN18(At)
Cooling Capacity11.2 kW14.0 kW16.0 kW18.0 kW
Heating Capacity12.5 kW16.0 kW18.0 kW20.0 kW
Airflow Rate1600-979 m³/h1900-1219 m³/h2100-1270 m³/h2300-1270 m³/h
Sound Pressure41-33 dB(A)47.5-36.5 dB(A)48-37 dB(A)52-38 dB(A)
Applications
🏨 Hotels & Resorts
🏢 Office Buildings
🛍 Retail Stores
🏫 Schools & Universities
🏥 Healthcare Facilities
🏢 Commercial Buildings
Why Choose Refria VRF Cassette Indoor Units?
Refria specializes in commercial HVAC manufacturing and international project supply. Our VRF 4 way cassette air conditioner series is engineered for reliable operation, energy efficiency and long service life.

✓ Professional VRF system manufacturer
✓ OEM & ODM customization support
✓ Global export experience
✓ Comprehensive technical assistance
✓ Strict quality management procedures
✓ Commercial HVAC project expertise
✓ Fast quotation and engineering support

Whether you are a distributor, contractor, project developer or consulting engineer, Refria provides dependable cassette indoor unit solutions for modern buildings.
Frequently Asked Questions
What is a 4 way cassette air conditioner?
A 4 way cassette air conditioner is a ceiling-mounted indoor unit that distributes conditioned air in four directions for uniform room coverage.
What are the advantages of a cassette indoor unit?
Cassette indoor units provide better airflow coverage, concealed installation, reduced visual impact and improved comfort compared with conventional wall-mounted units.
Where can a 4 way ceiling cassette be installed?
They are commonly installed in offices, hotels, conference rooms, retail stores, restaurants and commercial buildings with suspended ceilings.
Does the unit include a drain pump?
Yes. The Refria VRF cassette indoor unit includes a standard 1200mm high-lift drain pump for easier installation.
Can the airflow direction be adjusted?
Yes. Independent louver control allows each outlet to be adjusted separately for customized airflow distribution.
Is this product suitable for VRF systems?
Yes. The entire series is specifically designed as a VRF cassette indoor unit for commercial and residential VRF applications.
Looking for a reliable 4 way cassette air conditioner manufacturer? Contact Refria for product specifications, OEM solutions, project consultation and competitive quotations. Our engineering team is ready to support your next HVAC project.
Refria International Co., Limited
sharon.pan@refria.com

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