Multi-zone ODU

GS*M**HP230V1MO

 

● Up to 21.0 SEER2 / 13.6 EER2 / 10.0 HSPF2 efficiency

● Cooling Range from -22°F - 118°F

● Heating Range from -22°F - 75°F

● Supports line lengths up to 328 ft.

 

GREE R32 Multi-Zone Ductless Outdoor Unit (18K – 60K)

The GREE R32 Multi-Zone System connects one outdoor unit to multiple indoor units, delivering flexible room-by-room comfort, reduced outdoor clutter, easier installation, and reliable year-round performance.

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Submittal data

Multi 18K

Explore the Multi 18K submittal data.

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Submittal data

Multi 24K

Explore the Multi 24K submittal data.

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submittal data

Multi 30K

Explore the Multi 30K submittal data.

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Submittal data

Multi 36K

Explore the Multi 36K submittal data.

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Submittal data

Multi 42K

Explore the Multi 42K submittal data.

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Submittal data

Multi 48K

Explore the Multi 48K submittal data.

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Submittal data

Multi 60K

Explore the Multi 60K submittal data.

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Manual

Owner's Manual

Access the Multi Zone user guide.

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Manual

Service Manual

Access the Multi Zone user guide.

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Select Capacity (Cooling)

  • 18K

    CURRENT SELECTION

    GS2M18HP230V1MO

    18000 BTU/h

  • 24K

    CURRENT SELECTION

    GS3M24HP230V1MO

    24000 BTU/h

  • 30K

    CURRENT SELECTION

    GS4M30HP230V1MO

    30000 BTU/h

  • 36K

    CURRENT SELECTION

    GS4M36HP230V1MO

    36000 BTU/h

  • 42K

    CURRENT SELECTION

    GS5M42HP230V1MO

    42000 BTU/h

  • 48K

    CURRENT SELECTION

    GS5M48HP230V1MO

    48000 BTU/h

  • 60K

    CURRENT SELECTION

    GS6M60HP230V1MO

    60000 BTU/h

Home  ꄲ  Products  ꄲ  MultiZoneODU

  • More Comfort, Less Outdoor Clutter

     

    Comfort multiple rooms with just one outdoor unit. The GREE R32 Multi-Zone System can connect up to 6 indoor units, helping reduce outdoor equipment, save space, and simplify installation.

    Room-by-Room Comfort That Fits Your Home

     

    Every room has different comfort needs. With compatible wall-mounted, ducted, cassette, floor-ceiling, and air handler indoor units, this system gives each space a comfort solution that fits its layout.

    Built-In Protection for Peace of Mind

     

    A multi-zone system should do more than heat and cool. With refrigerant leakage sensing, intelligent defrosting, low-voltage startup, and safety protections, the GREE R32 Multi-Zone System keeps comfort safer and more reliable.

    Frequently Asked Questions

    1. What is the GREE Multi-Zone outdoor unit?
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    2. What does GS2M18HP230V1MO mean?
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    3. How many indoor units can one Multi-Zone outdoor unit support?
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    4. What is the maximum line set and piping length?
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    5. How cold will the Multi-Zone ODU heat and cool?
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    6. What does SEER2 21.0 mean for the Multi-Zone system?
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    7. What indoor unit types are compatible with the Multi-Zone ODU?
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    8. What safety and protection features does the Multi-Zone system have?
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    9. What is the connected capacity ratio for Multi-Zone?
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    10. How compact is the new G-Max Multi-Zone outdoor unit?
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    11. Can the Multi-Zone system keep running during minor faults?
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    12. Where can I download the Multi-Zone submittal sheets and manuals?
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    13. How much does the GREE Multi-Zone ODU cost, and where can I buy it?
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  • Long-Reach Installation

     

    Total piping length reaches up to 394 ft, helping serve more rooms and complex building layouts.

    -22°F Low-Temperature Operation

     

    The full lineup supports cooling and heating operation down to -22°F, helping maintain comfort in demanding outdoor conditions.

    Intelligent Defrost Control

     

    Temperature sensors detect frost status and manage defrosting intelligently to help maintain heating comfort.

    Whole-Home Zoning

     

    Connect one outdoor unit to up to 6 indoor units, bringing customized comfort to different rooms without multiple outdoor systems.

    More Compact Outdoor Design

     

    New G-Max outdoor units are about 32% smaller than the previous generation, helping fit tighter yards, balconies, and urban installation spaces.

    Flexible Capacity Matching

     

    Supports a 50%–150% connected indoor capacity ratio, with 100%–135% recommended for balanced system design.

    Smarter System Protection

     

    The system can adjust operation during certain non-critical faults, helping maintain comfort while protecting the unit.

    Corrosion-Resistant Build

     

    Protected sheet metal, coated PCB, durable insulation, and optional black condenser help improve outdoor durability.

    The GREE R32 Multi-Zone Outdoor Unit (ODU)​ connects one outdoor unit to multiple indoor units, delivering flexible room-by-room comfort for whole homes, multi-room offices, and light commercial spaces. It delivers up to 21.0 SEER2 / 13.6 EER2 / 10.0 HSPF2​ efficiency with advanced R32 inverter technology.

     

    Available in seven capacities:

    the 18K (GS2M18HP230V1MO, shorthand 18MO, GS2M series),

    24K (GS3M24HP230V1MO, 24MO, GS3M series),

    30K (GS4M30HP230V1MO, 30MO, GS4M series),

    36K (GS4M36HP230V1MO, 36MO, GS4M series),

    42K (GS5M42HP230V1MO, 42MO, GS5M series),

    48K (GS5M48HP230V1MO, 48MO, GS5M series),

    and 60K (GS6M60HP230V1MO, 60MO, GS6M series)​ BTU/h.

    ​​​​​​​

    The Multi-Zone ODU requires a 230V/60Hz dedicated circuit, provides heating and cooling down to -22°F, supports line lengths up to 328 ft per zone and 394 ft total piping, and can connect up to 6 indoor units​ (wall-mounted, ducted, cassette, floor-ceiling, air handler). Features include refrigerant leakage sensing, intelligent defrosting, low-voltage startup, safety protections, G-Max compact design (about 32% smaller than previous generation), supports 50%–150% connected indoor capacity ratio, and AHRI certified performance.

     

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    Multi-Zone ODU Model Numbers & SKU Reference
    Capacity Outdoor Unit (MO) Shorthand Series Indoor Units Supported
    18K (18,000 BTU/h) GS2M18HP230V1MO 18MO GS2M Up to 3
    24K (24,000 BTU/h) GS3M24HP230V1MO 24MO GS3M Up to 3
    30K (30,000 BTU/h) GS4M30HP230V1MO 30MO GS4M Up to 4
    36K (36,000 BTU/h) GS4M36HP230V1MO 36MO GS4M Up to 4
    42K (42,000 BTU/h) GS5M42HP230V1MO 42MO GS5M Up to 5
    48K (48,000 BTU/h) GS5M48HP230V1MO 48MO GS5M Up to 5
    60K (60,000 BTU/h) GS6M60HP230V1MO 60MO GS6M Up to 6
    Note: "MO" denotes Multi-zone Outdoor unit. Each GS*M**HP230V1MO outdoor unit can connect to multiple compatible indoor units (wall-mounted, ducted, cassette, floor-ceiling, air handler) for room-by-room comfort. All Multi-Zone ODUs require a 230V/60Hz dedicated circuit.

     

  • Section Specification Item Condition / Detail Unit 18 MO Value 24 MO Value 30 MO Value 36 MO Value 42 MO Value 48 MO Value 60 MO Value
    Product Identification Product Category     Heat Pump Heat Pump Heat Pump Heat Pump Heat Pump Heat Pump Heat Pump
    Outdoor Model     GS2M18HP230V1MO GS3M24HP230V1MO GS4M30HP230V1MO GS4M36HP230V1MO GS5M42HP230V1MO GS5M48HP230V1MO GS6M60HP230V1MO
    Connectable Indoor Zones     2 2 - 3 2 - 4 2 - 4 2 - 5 2 - 5 2 - 6
    Refrigerant     R32 R32 R32 R32 R32 R32 R32
    Performance - Non-Ducted Indoor Units Cooling Capacity Minimum - Maximum Btu/h 7,300 - 19,800 7,500 - 31,400 8,190 - 34,100 8,870 - 40,900 8,870 - 44,300 8,870 - 49,133 8,870 - 61,000
    Rated Cooling Capacity @95°F Btu/h 18000 24000 28400 36000 42000 48000 55000
    Heating Capacity   Btu/h 7,300 - 18,100 7,500 - 31,400 8,190 - 40,900 8,870 - 51,180 8,870 - 54,592 8,870 - 54,592 8,870 - 62,000
    Rated Heating Capacity @47°F Btu/h 18000 24000 30000 36000 42000 48000 55000
    Low-Ambient Heating Capacity @17°F Btu/h 16000 23600 28000 36000 40000 40000 41000
    Extreme-Low-Ambient Heating Capacity @5°F Btu/h 13800 21600 27000 36000 37800 37800 36400
    SEER2 21 21 21 21 21 21 21
    EER2 12 13.3 13.6 12 13 12 11.65
    HSPF2 10 10 10 10 10 10 10
    COP @5°F   2 2 2.07 2.1 2.1 2.1 2.1
    Performance - Ducted Indoor Units Cooling Capacity Minimum - Maximum Btu/h 7,300 - 19,800 7,500 - 31,400 8,190 - 34,100 8,870 - 40,900 8,870 - 44,300 8,870 - 49,133 8,870 - 61,000
    Rated Cooling Capacity @95°F Btu/h 18000 24000 28400 36000 42000 48000 55000
    Heating Capacity Minimum - Maximum Btu/h 7,300 - 18,100 7,500 - 31,400 8,190 - 40,900 8,870 - 51,180 8,870 - 54,592 8,870 - 54,592 8,870 - 62,000
    Rated Heating Capacity @47°F Btu/h 18000 24000 30000 36000 42000 48000 55000
    Low-Ambient Heating Capacity @17°F Btu/h 15000 22000 27200 36000 40000 40000 40000
    Extreme-Low-Ambient Heating Capacity @5°F Btu/h 13600 21600 26000 33000 36000 36000 31000
    SEER2     18 18 18 18 18 18 19
    EER2     11.7 12 12 11.7 12 11.7 11.7
    HSPF2     8.1 8.1 8.1 8.1 8.1 8.1 8
    COP @5°F   1.86 1.86 1.88 1.9 1.9 1.9 2.3
    Performance - Mixed Indoor Units Cooling Capacity Minimum - Maximum Btu/h 7,300 - 19,800 7,500 - 31,400 8,190 - 34,100 8,870 - 40,900 8,870 - 44,300 8,870 - 49,133 8,870 - 61,000
    Rated Cooling Capacity @95°F Btu/h 18000 24000 28400 36000 42000 48000 55000
    Heating Capacity Minimum - Maximum Btu/h 7,300 - 18,100 7,500 - 31,400 8,190 - 40,900 8,870 - 51,180 8,870 - 54,592 8,870 - 54,592 8,870 - 62,000
    Rated Heating Capacity @47°F Btu/h 18000 24000 30000 36000 42000 48000 55000
    Low-Ambient Heating Capacity @17°F Btu/h 15400 23000 27600 36000 40000 40000 40000
    Extreme-Low-Ambient Heating Capacity @5°F Btu/h 13700 21600 26400 34000 37000 37000 32000
    SEER2     19 19 19 19 19 19 20
    EER2     11.8 12.2 12.2 11.8 12.2 11.8 11.8
    HSPF2     9 9 9 9 9 9 9
    COP @5°F   1.8 1.8 1.81 1.84 1.84 1.84 2.2
    Outdoor Unit Data Cooling Operating Range   °F -22 - 118 -22 - 118 -22 - 118 -22 - 118 -22 - 118 -22 - 118 -22 - 118
    Heating Operating Range   °F -22 - 75 -22 - 75 -22 - 75 -22 - 75 -22 - 75 -22 - 75 -22 - 75
    Compressor Type     GREE / Double Cylinder / 1-Stage Inverter GREE / Double Cylinder / 1-Stage Inverter GREE / Double Cylinder / 1-Stage Inverter GREE / Double Cylinder / 1-Stage Inverter GREE / Double Cylinder / 1-Stage Inverter GREE / Double Cylinder / 1-Stage Inverter GREE / Double Cylinder / 1-Stage Inverter
    Outdoor Sound Pressure Level   dB(A) 51 55 58 59 59 59 59
    Outdoor Unit Dimensions W × H × D in 32-23/64 × 21-42/64 × 13-55/64 37-61/64 × 25-63/64 × 15-53/64 40-10/64 × 32-33/64 × 16-52/64 40-10/64 × 32-33/64 × 16-52/64 40-10/64 × 32-33/64 × 16-52/64 40-10/64 × 32-33/64 × 16-52/64 38-55/64 x 49-49/64 x 16-7/32
    Outdoor Package Dimensions W × H × D in 34-21/64 × 24-26/64 × 15-43/64 40 40/64 × 29-1/64 × 17-61/64 43 2/64 × 34 54/64 × 19 36/64 43-1/32 × 34-27/32 × 19-9/16 43-1/32 × 34-27/32 × 19 36/64 43 2/64 × 34 54/64 × 19 36/64 40-43/64 x 55-5/16 x 17-7/16
    Outdoor Net Weight   lbs 78.3 112.5 145.5 173.1 174.2 174.2 224.9
    Outdoor Gross Weight   lbs 84.9 122.4 161 188.5 189.6 189.6 251.4
    Refrigerant & Piping Refrigerant Charge R32 oz 31.752 59.976 77.616 95.256 95.256 95.256 112.88
    Additional Refrigerant Charge Per extra line length oz/ft 0.2 0.2 0.2 0.2 0.2 0.2 0.2
    Port A Line Connection Size Liquid / Gas in 1/4 - 3/8 1/4 - 3/8 1/4 - 3/8 1/4 - 3/8 1/4 - 3/8 1/4 - 3/8 1/4 - 1/2
    Port B Line Connection Size Liquid / Gas in 1/4 - 3/8 1/4 - 3/8 1/4 - 3/8 1/4 - 3/8 1/4 - 3/8 1/4 - 3/8 1/4 - 1/2
    Port C Line Connection Size Liquid / Gas in - 1/4 - 3/8 1/4 - 3/8 1/4 - 3/8 1/4 - 3/8 1/4 - 3/8 1/4 - 3/8
    Port D Line Connection Size Liquid / Gas in -   1/4 - 3/8 1/4 - 3/8 1/4 - 3/8 1/4 - 3/8 1/4 - 3/8
    Port E Line Connection Size Liquid / Gas in -       1/4 - 3/8 1/4 - 3/8 1/4 - 3/8
    Port F Line Connection Size Liquid / Gas in -           1/4 - 3/8
    Factory Pre-Charged Line Length   ft 32.81 98.42 131.23 131.23 164 164 196.85
    Total Refrigerant Piping Length Maximum ft 131.23 196.85 262.46 262.46 328.08 328.08 393.7
    Maximum Line Length to Farthest Indoor Unit   ft 66 66 82 82 82 82 82
    Maximum Vertical Separation   ft 49 49 82 82 82 82 82
    Electrical Requirements Electrical Supply     208-230V / 1Ph / 60Hz 208-230V / 1Ph / 60Hz 208-230V / 1Ph / 60Hz 208-230V / 1Ph / 60Hz 208-230V / 1Ph / 60Hz 208-230V / 1Ph / 60Hz 208-230V / 1Ph / 60Hz
    Voltage Range Minimum - Maximum VAC 187 - 253 187 - 253 187 - 253 187 - 253 187 - 253 187 - 253 187 - 253
    Cooling Rated Current   A 11 14 20 21.7 21.7 21.7 28.5
    Heating Rated Current   A 11 14.8 21.7 22.6 22.6 22.6 30
    Maximum Overcurrent Protection   A 20 25 30 35 35 35 40
    Minimum Circuit Ampacity   A 14.5 19.5 23 30 30 30 37.5
    Main Power Cable Size   AWG Refer to Local Electrical Code Refer to Local Electrical Code Refer to Local Electrical Code Refer to Local Electrical Code Refer to Local Electrical Code Refer to Local Electrical Code Refer to Local Electrical Code
    Indoor/Outdoor Interconnecting Cable   AWG 14 AWG 4-conductor stranded cable 14 AWG 4-conductor stranded cable 14 AWG 4-conductor stranded cable 14 AWG 4-conductor stranded cable 14 AWG 4-conductor stranded cable 14 AWG 4-conductor stranded cable 14 AWG 4-conductor stranded cable
    KEY FEATURES Intelligent Preheating     YES YES YES YES YES YES YES
    Self Diagnosis     YES YES YES YES YES YES YES
    Compressor Electric Heater     YES YES YES YES YES YES YES
    Chassis Electric Heater     YES YES YES YES YES YES YES
    Intelligent Defrosting     YES YES YES YES YES YES YES
    Energy Saving     YES YES YES YES YES YES YES
    Low Voltage Startup     YES YES YES YES YES YES YES
    Indoor Unit A2L Refrigerant Leak Sensor     Pre-Installed at Factory Pre-Installed at Factory Pre-Installed at Factory Pre-Installed at Factory Pre-Installed at Factory Pre-Installed at Factory Pre-Installed at Factory