6 Best Alternatives to the GREE 36k BTU 23 SEER Tri-Zone Mini Split (2026)
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You are looking for gree 36k btu 23 seer tri zone mini split alternatives to replace or supplement your current setup. The original GREE unit excels at cooling three separate rooms with high efficiency and built-in Wi-Fi control. Its tri-zone design allows you to manage distinct spaces independently, which is ideal for multi-room layouts.
However, you might want something else due to different requirements. Perhaps you need a single-zone unit for a smaller space, or you prefer a different voltage like 115V for standard outlets. Some buyers also seek lower costs or specific smart features. We selected these alternatives because their specifications overlap with the original in key areas like efficiency and connectivity. This list compares 6 options based on their published specs, helping you find the right fit for your specific needs.
Our top pick: GREE 36k BTU 23 SEER Tri-Zone Mini Split.
How these units differ from GREE
Rellytech 12000 BTU 20 SEER2 Mini Split
The Rellytech 12,000 BTU unit is a single-zone system, not a multi-zone setup. It offers 20 SEER2 efficiency and built-in Wi-Fi, similar to the GREE smart control. However, it lacks the tri-zone capacity to cool three rooms independently. This model runs on 115V power, making installation easier for standard outlets. You should choose this if you only need to condition one room and do not require the GREE’s multi-room distribution. It is a simpler, budget-friendly alternative for smaller spaces where whole-home coverage is unnecessary. The single indoor handler replaces the three units found in the GREE system.
COSTWAY Blast Pro 18000 BTU 230V
The COSTWAY Blast Pro 18,000 BTU unit is also a single-zone system. It provides 20 SEER2 efficiency and Wi-Fi connectivity, matching the GREE’s smart features. However, it cannot split cooling across three zones. This unit operates on 230V power, which requires a different electrical setup than the GREE. It is designed for large single rooms rather than multi-room layouts. You should pick this if you need a powerful, efficient unit for one large space and do not need the GREE’s tri-zone flexibility. The single indoor handler is more compact but lacks the versatility of managing multiple distinct areas simultaneously.
Mountman 9000 BTU 115V Mini Split
The Mountman 9,000 BTU unit is a single-zone mini split with 19 SEER2 efficiency and Wi-Fi control. It runs on 115V power, offering easier installation for standard outlets. This model is significantly smaller and less powerful than the GREE 36,000 BTU system. It is intended for small rooms where basic smart features are sufficient. You should choose this if you only need to cool a modest space and do not require the high capacity or multi-zone capability of the GREE. The single indoor handler is lighter and more compact, making it suitable for apartments or small bedrooms rather than whole-home climate control.
ROVSUN 9000 BTU 20 SEER2 Mini Split
The ROVSUN 9,000 BTU unit is a single-zone system with 20 SEER2 efficiency and Wi-Fi connectivity. It operates on 115V power, similar to the Rellytech and Mountman options. This model is designed for small rooms and lacks the multi-zone capacity of the GREE 36,000 BTU system. You should pick this if you need efficient, smart-controlled cooling for a single space and do not require the GREE’s ability to manage three separate zones. The compact indoor handler is suitable for smaller areas where high BTU output is unnecessary. It offers reliable performance for modest cooling needs without the complexity of a multi-zone setup.
YITAHOME 12000 BTU 115V Mini Split
The YITAHOME 12,000 BTU unit is a single-zone mini split with 20 SEER2 efficiency and Wi-Fi control. It runs on 115V power, making it compatible with standard outlets. This model is designed for smaller rooms and does not offer the tri-zone capability of the GREE system. You should choose this if you need efficient, smart-controlled cooling for one room and do not require the GREE’s multi-room distribution. The single indoor handler is compact and suitable for modest spaces. It provides precise climate management for a single zone, making it a practical alternative for users who do not need to cool multiple areas simultaneously.
TOSOT 9,000 BTU 230V Mini Split
The TOSOT 9,000 BTU unit is a single-zone system with 20.5 SEER2 efficiency and Wi-Fi control. It supports Alexa integration, offering smart features similar to the GREE. However, it operates on 230V power and lacks the multi-zone capacity of the GREE 36,000 BTU system. This model is designed for small bedrooms or offices where quiet operation is a priority. You should pick this if you need efficient, smart-controlled cooling for a single space and do not require the GREE’s ability to manage three separate zones. The single indoor handler is suitable for modest cooling needs without the complexity of a multi-zone setup.
Quick picks
Our 7 picks
GREE 36k BTU 23 SEER Tri-Zone Mini Split
Best for: cooling three separate rooms efficiently
- Cooling Capacity
- 36,000 BTU
- Efficiency Rating
- 23 SEER
- Number of Zones
- TRI
- Smart Connectivity
- Built-in Wi-Fi
- Dimensions
- 40 × 17 × 43 inches
- Weight
- 220 pounds
View on Amazon: GREE 36k BTU 23 SEER Tri-Zone Mini Split Affiliate link
This is a tri-zone ductless mini split with 36,000 BTU total cooling capacity. It features a 23 SEER efficiency rating and built-in Wi-Fi. The system includes one 9,000 BTU and two 12,000 BTU indoor handlers. It uses G10 inverter technology for steady temperatures. You should choose this if you need to cool three separate areas with a single outdoor unit.
Pros
- 23 SEER efficiency rating for energy savings
- Tri-zone configuration with 9k, 12k, and 12k BTU units
- Built-in Wi-Fi for remote control
- G10 inverter technology for steady temperature
- 7-year compressor warranty
Cons
- 220-pound outdoor unit requires strong mounting
- Lineset not included with the system
- Installation must be done by a licensed HVAC contractor
Good fit if
- You need to cool three separate rooms
- You want high energy efficiency with a 23 SEER rating
- You prefer built-in Wi-Fi control
Skip if
- You only need to cool one room
- You cannot hire a licensed HVAC contractor
- You need a lighter outdoor unit under 150 pounds
Verdict: GREE 36k BTU Tri-Zone 23 SEER Mini Split is ideal for homeowners who need to condition three distinct spaces with high efficiency. Its tri-zone design and inverter technology provide precise comfort for multi-room layouts.
Rellytech 12000 BTU 20 SEER2 Mini Split
Best for: single-room cooling and heating on 115V
- Cooling Capacity
- 12,000 BTU
- Efficiency Rating
- 20 SEER2
- Voltage
- 110V/115V
- Coverage Area
- Up to 750 sq ft
- Heat Pump
- Heat Pump
- Smart Connectivity
- Wi-Fi, Voice control, Smartphone app
View on Amazon: Rellytech 12000 BTU 20 SEER2 Mini Split Affiliate link
The Rellytech 12,000 BTU mini split offers 20 SEER2 efficiency on a standard 115V circuit. It covers up to 750 square feet with a heat pump that works down to -13°F. Wi-Fi control and a digital remote let you manage settings from anywhere. This unit suits smaller rooms or garages where you need reliable heating and cooling without a 230V line.
Pros
- 20 SEER2 efficiency rating for lower energy use
- 115V plug-in compatibility for easy installation
- Wi-Fi and voice command support for remote control
- Heat pump operates in temperatures down to -13°F
Cons
- 12,000 BTU capacity is too small for large open spaces
- Indoor unit width of 31.9 inches is narrower than standard 18k models
- Requires a licensed HVAC technician for installation
Good fit if
- You need a 115V unit for a room under 750 sq ft
- You want Wi-Fi control without complex wiring
- You need heating capability in cold climates down to -13°F
Skip if
- You require a tri-zone system for multiple rooms
- You need more than 12,000 BTU of cooling power
- You prefer a 230V system for higher efficiency ratings
Verdict: Rellytech 12,000 BTU 20 SEER2 Mini Split is a practical choice for single-room cooling and heating on a standard outlet, provided you do not need multi-zone coverage.
COSTWAY Blast Pro 18000 BTU 230V
Best for: Single large rooms needing smart control
- Cooling Capacity
- 18,000 BTU
- Efficiency Rating
- 20 SEER2
- Voltage
- 208/230V
- Coverage Area
- Up to 1,250 sq ft
- Heat Pump
- Heat Pump
- Smart Connectivity
- Wi-Fi, App, Alexa, Google Assistant
View on Amazon: COSTWAY Blast Pro 18000 BTU 230V Affiliate link
This 18,000 BTU mini split offers 20 SEER2 efficiency for spaces up to 1,250 square feet. It operates on 208/230V power and includes Wi-Fi app control plus voice assistant compatibility. The unit features 4D airflow, a self-clean function, and quiet operation at 28 dB. It provides reliable heating down to -4°F and cooling up to 127°F. This system suits users needing mid-range capacity with smart connectivity and standard voltage requirements.
Pros
- 20 SEER2 energy efficiency rating for steady temperature maintenance
- Wi-Fi app control with Alexa and Google Assistant support
- Operates reliably in extreme temperatures from -4°F to 127°F
- Quiet indoor operation at 28 dB with 4D airflow design
- Self-clean function and removable washable filters for easy maintenance
Cons
- 18,000 BTU capacity is lower than the 36,000 BTU units on this list
- Requires 208/230V electrical connection, not standard 115V
- Indoor unit width of 35.8 inches is bulkier than 9k or 12k models
Good fit if
- You need a mid-size unit for rooms up to 1,250 square feet
- You have 208/230V electrical outlets available for installation
- You want smart app control and voice assistant integration
Skip if
- You require a 36,000 BTU system for large multi-zone setups
- You only have standard 115V electrical circuits available
- You prefer a more compact indoor unit for smaller walls
Verdict: COSTWAY 18k BTU 20 SEER2 Mini Split fits buyers needing a capable mid-range unit with smart features and reliable performance in extreme weather. It is a solid option for single large rooms rather than whole-home multi-zone projects.
Mountman 9000 BTU 115V Mini Split
Best for: small rooms needing Wi-Fi control
- Cooling Capacity
- 9000 BTU
- Efficiency Rating
- 19 SEER2
- Voltage
- 110/120V
- Coverage Area
- Up to 450 Sq.Ft
- Heat Pump
- Heat Pump
- Smart Connectivity
- Built-in WiFi & Alexa compatible
View on Amazon: Mountman 9000 BTU 115V Mini Split Affiliate link
This Mountman unit delivers 9,000 BTU of cooling and heating for spaces up to 450 square feet. It operates on 110/120V power and achieves a 19 SEER2 efficiency rating. Built-in Wi-Fi allows you to control the system via Alexa or the included remote. The indoor unit runs quietly at 26 dB in Sleep Mode. It includes self-cleaning and automatic defrost functions for steady performance.
Pros
- 9,000 BTU cooling and heating capacity
- 19 SEER2 energy efficiency rating
- Built-in Wi-Fi with Alexa compatibility
- Ultra-quiet 26 dB operation in Sleep Mode
- Intelligent self-cleaning and auto-defrost functions
Cons
- Lower 19 SEER2 rating compared to 20+ SEER2 competitors
- Smaller 9,000 BTU capacity limits use to small rooms
- Heavier 68.6-pound unit requires sturdy mounting
Good fit if
- You need efficient cooling for a single small room
- You want Wi-Fi control via Alexa
- You prefer 110/120V electrical connections
Skip if
- You require higher than 19 SEER2 efficiency
- You need to cool a space larger than 450 square feet
- You prefer 208/230V systems for better performance
Verdict: Mountman 9000 BTU 19 SEER2 Mini Split suits small rooms where basic smart features matter more than peak efficiency. It offers quiet operation and easy Wi-Fi control for modest spaces.
ROVSUN 9000 BTU 20 SEER2 Mini Split
Best for: small rooms with 115V outlets
- Cooling Capacity
- 9000 BTU
- Efficiency Rating
- 20 SEER2, 19 SEER
- Voltage
- 115V
- Coverage Area
- Up to 400 sq.ft.
- Heat Pump
- Heat Pump
- Smart Connectivity
- Wi-Fi, App, Alexa, Google Assistant
View on Amazon: ROVSUN 9000 BTU 20 SEER2 Mini Split Affiliate link
This ROVSUN unit offers 9,000 BTU cooling and heating for rooms up to 400 square feet. It runs on 115V power and achieves a 20 SEER2 efficiency rating. You get Wi-Fi connectivity for app and voice control via Alexa or Google Assistant. The indoor unit weighs 70 pounds and measures 31.9 inches wide. It includes a remote and 16.4 feet of copper lines. This model suits small spaces needing basic smart features.
Pros
- 20 SEER2 efficiency rating for energy savings
- Wi-Fi enabled with app and voice control
- Operates quietly at 28dB in mute mode
- Works with standard 115V household outlets
Cons
- 9,000 BTU capacity is too small for large rooms
- 115V voltage limits use to smaller circuits
- Heavier 70-pound unit requires sturdy mounting
Good fit if
- You need to cool a small bedroom or office
- You want smart app control without complex wiring
- You have a standard 115V electrical outlet available
Skip if
- You are cooling a large open living area
- You require a high-capacity 24,000 BTU system
- You need a 230V hardwired connection only
Verdict: ROVSUN 9000 BTU WiFi Mini Split is a compact, efficient option for small rooms where smart control is a priority. It fits users with standard 115V outlets who do not need heavy-duty cooling power.
YITAHOME 12000 BTU 115V Mini Split
Best for: smaller single-zone rooms
- Cooling Capacity
- 12000 BTU
- Efficiency Rating
- 20 SEER2
- Voltage
- 115V
- Coverage Area
- 750 sq. ft.
- Heat Pump
- Heat pump
- Smart Connectivity
- Wi-Fi, Alexa
View on Amazon: YITAHOME 12000 BTU 115V Mini Split Affiliate link
This YITAHOME unit delivers 12,000 BTU of cooling and heating with a 20 SEER2 efficiency rating. It covers up to 750 square feet and operates on 115V power. The system includes Wi-Fi and Alexa compatibility for remote control. You get five operating modes and four fan speeds to adjust airflow. It runs quietly at under 41 dB and functions in temperatures from 5°F to 118°F.
Pros
- 20 SEER2 efficiency rating for energy savings
- Wi-Fi and Alexa smart home integration
- Quiet operation at under 41 dB
- Operates in extreme temperatures from 5°F to 118°F
Cons
- 12,000 BTU capacity is too small for large zones
- Only 750 sq ft coverage area
- Requires licensed HVAC professional installation
Good fit if
- You need a smaller unit for a single zone
- You want smart control via Wi-Fi
- You require heating in cold climates down to 5°F
Skip if
- You need 36,000 BTU for a large space
- You prefer a tri-zone system
- You want a higher SEER2 rating
Verdict: YITAHOME 12k BTU 20 SEER2 Mini Split is a compact, efficient option for smaller rooms. It fits buyers who need precise, smart-controlled climate management for a single zone rather than whole-home cooling.
TOSOT 9,000 BTU 230V Mini Split
Best for: small bedrooms needing quiet, smart cooling
- Cooling Capacity
- 9,000 BTU
- Efficiency Rating
- 20.5 SEER2
- Voltage
- 230V
- Heat Pump
- Heating System
- Smart Connectivity
- Wifi, Alexa, GREE+ app
- Smart Control
- Wi-Fi, Alexa
View on Amazon: TOSOT 9,000 BTU 230V Mini Split Affiliate link
The TOSOT 9,000 BTU mini split offers 20.5 SEER2 efficiency for year-round comfort. It operates on 230V and includes Wi-Fi connectivity for Alexa and app control. The unit runs quietly at 22dB, making it suitable for bedrooms. It comes with a 16 ft line set and essential accessories. This model provides stable heating down to -13°F and cooling in high heat.
Pros
- 20.5 SEER2 inverter compressor for energy efficiency
- Wi-Fi enabled with Alexa and GREE+ app support
- Quiet operation at 22dB–36dB for sleep spaces
- Includes 16 ft copper line set and installation accessories
Cons
- 9,000 BTU capacity is too small for large rooms
- Requires professional installation for vacuuming and refrigerant handling
- 230V voltage may require specific electrical setup
Good fit if
- You need quiet cooling for a bedroom or nursery
- You want smart control via Alexa or the GREE+ app
- You are installing a 230V circuit in your home
Skip if
- You need more than 9,000 BTU for a large space
- You prefer a 115V plug-and-play unit without professional install
- You do not want Wi-Fi or smart home integration
Verdict: TOSOT 9,000 BTU 20.5 SEER2 Mini Split is a quiet, smart choice for small rooms where Alexa integration and low noise matter more than raw power.
Specifications side by side
| Spec | GREE 36k BTU 23 SEER Tri-Zone Mini Split | Rellytech 12000 BTU 20 SEER2 Mini Split | COSTWAY Blast Pro 18000 BTU 230V | Mountman 9000 BTU 115V Mini Split | ROVSUN 9000 BTU 20 SEER2 Mini Split | YITAHOME 12000 BTU 115V Mini Split | TOSOT 9,000 BTU 230V Mini Split |
|---|---|---|---|---|---|---|---|
| Cooling Capacity | 36,000 BTU | 12,000 BTU | 18,000 BTU | 9000 BTU | 9000 BTU | 12000 BTU | 9,000 BTU |
| Efficiency Rating | 23 SEER | 20 SEER2 | 20 SEER2 | 19 SEER2 | 20 SEER2, 19 SEER | 20 SEER2 | 20.5 SEER2 |
| Voltage | not stated | 110V/115V | 208/230V | 110/120V | 115V | 115V | 230V |
| Coverage Area | not stated | Up to 750 sq ft | Up to 1,250 sq ft | Up to 450 Sq.Ft | Up to 400 sq.ft. | 750 sq. ft. | not stated |
| Number of Zones | TRI | not stated | not stated | not stated | not stated | not stated | not stated |
| Heat Pump | not stated | Heat Pump | Heat Pump | Heat Pump | Heat Pump | Heat pump | Heating System |
| Smart Connectivity | Built-in Wi-Fi | Wi-Fi, Voice control, Smartphone app | Wi-Fi, App, Alexa, Google Assistant | Built-in WiFi & Alexa compatible | Wi-Fi, App, Alexa, Google Assistant | Wi-Fi, Alexa | Wifi, Alexa, GREE+ app |
| Smart Control | Wi-Fi | Wi-Fi | Wi-Fi, Alexa | Wi-Fi | Wi-Fi | Wi-Fi, Alexa | Wi-Fi, Alexa |
| Dimensions | 40 × 17 × 43 inches | 8.66 × 31.9 × 11.4 inches | 7.68 × 35.8 × 12 inches | 8.23 × 32.3 × 11.9 inches | 7.99 × 31.9 × 11.5 inches | 7.9 × 31.2 × 11.5 inches | 14.7 × 23.2 × 31.1 inches |
| Weight | 220 pounds | 75.3 pounds | 20.9 pounds | 68.6 pounds | 70 pounds | 22 pounds | not stated |
| Size | 36,000 BTU / 9K, 12K, 12K | 12000BTU,115V,20 SEER2-WiFi | not stated | not stated | 8.07"D x 31.92"W x 11.49"H | not stated | WiFi - 9,000 BTU 230V (20.5 SEER2) |
| Color | Cream | White | White | White | White | White | White |
| Model | MULTIU36CVIR304 | CE0-1 | Blast Pro | MM-HWF9-115 | RV09T1/20-I/RV09T1/20-O | MAYIH4qu0k | SU-COSMO9-230 |
When planning system controls, you can evaluate mysa smart thermostat mini split heat alternatives for compatible hardware features.
Frequently asked questions
Can I use a single-zone mini split to replace a tri-zone system?
No, a single-zone unit cannot replace a tri-zone system. The GREE model uses three indoor heads to cool separate rooms independently. Single-zone alternatives like the Rellytech or ROVSUN units only serve one space. You would need three separate single-zone systems to achieve the same coverage, which increases complexity and installation costs.
Do these alternatives support Wi-Fi smart control?
Yes, all listed alternatives include Wi-Fi connectivity. The Rellytech, COSTWAY, Mountman, ROVSUN, and YITAHOME units all feature built-in Wi-Fi for app control. The TOSOT model adds Alexa integration. This allows you to adjust temperatures remotely, matching the smart capabilities of the original GREE tri-zone system without needing additional hardware.
Which alternative is best for a small bedroom?
The Mountman 9,000 BTU or ROVSUN 9,000 BTU units are ideal for small bedrooms. Both offer 115V operation, fitting standard outlets. The Mountman provides 19 SEER2 efficiency, while the ROVSUN offers 20 SEER2. Both include Wi-Fi for convenient control. Their compact designs suit modest spaces where heavy-duty cooling power is unnecessary.
Is 230V better than 115V for mini splits?
230V systems generally handle larger loads more efficiently than 115V models. The COSTWAY and TOSOT units use 230V, making them suitable for larger rooms or higher power demands. The Rellytech, Mountman, ROVSUN, and YITAHOME units run on 115V, which is convenient for standard household outlets but limits their cooling capacity to smaller spaces.
How does SEER2 efficiency compare between these units?
SEER2 ratings indicate cooling efficiency under standardized testing. The GREE original offers 23 SEER. Among alternatives, the COSTWAY, ROVSUN, and YITAHOME units provide 20 SEER2. The Rellytech also achieves 20 SEER2. The Mountman offers 19 SEER2, and the TOSOT provides 20.5 SEER2. Higher numbers mean lower energy consumption for the same cooling output.
Can I control these units with Alexa?
Most units support Wi-Fi control, but voice assistant compatibility varies. The TOSOT 9,000 BTU model explicitly lists Alexa integration alongside Wi-Fi. Other units like the Rellytech, COSTWAY, and ROVSUN rely on their respective apps for control. You should check the specific app compatibility for each brand to ensure seamless voice command integration with your existing smart home setup.
What size mini split do I need for a large room?
For large rooms, the COSTWAY 18,000 BTU unit is the strongest option listed. It delivers 18k BTU with 230V power, making it suitable for substantial spaces. The GREE 36k BTU system is designed for three rooms combined. If you need to cool one large area, the 18k BTU model provides adequate capacity without the complexity of multi-zone distribution.