6 Best Alternatives to the COSTWAY 18000 BTU Mini Split (2026)
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You are looking for costway 18000 btu mini split alternatives because your needs may differ from the original model. The COSTWAY Blast Pro 18000 BTU 230V offers high efficiency with a 20 SEER2 rating and covers spaces up to 1250 sq.ft. It supports 208/230V power and includes Wi-Fi smart control. However, you might prefer a different capacity, voltage, or brand. Some buyers need smaller units for medium rooms or tri-zone systems for multiple spaces. Others may want a different voltage or specific smart features. We selected these alternatives because their published specifications overlap with the original product. Each option shares key traits like inverter technology, heat pump functionality, or similar efficiency ratings. This list helps you compare specs side by side. You can find models with 9000 BTU for smaller areas or 28000 BTU for larger zones. All listed units support 230V power and include Wi-Fi connectivity. This ensures you can control your comfort via an app or voice assistant. The selection focuses on practical specs rather than marketing claims. You can choose based on coverage area, noise levels, or physical dimensions. Each product meets the core requirements of efficient, smart mini split operation.
How each alternative compares
ROVSUN 12000 BTU 230V Mini Split
The ROVSUN 12000 BTU model targets medium rooms up to 550 square feet, which is significantly smaller than the COSTWAY Blast Pro’s 1250 square foot coverage. You get the same 20 SEER2 efficiency and 230V power, along with Wi-Fi smart control. However, you trade raw cooling capacity for a more compact footprint. This unit is lighter at 70 pounds compared to the COSTWAY’s 20.9 pounds for the indoor unit, though the outdoor unit weight is not specified here. If your space is under 600 square feet, this budget-friendly option provides quiet operation and smart features without the excess capacity of the larger 18000 BTU model.
TOSOT 18,000 BTU WiFi Mini Split
The TOSOT 18,000 BTU unit matches the COSTWAY Blast Pro in cooling capacity, efficiency rating of 20 SEER2, and 230V requirement. It also includes Wi-Fi and Alexa compatibility. The key difference lies in the indoor unit dimensions. The TOSOT is narrower at 23.3 inches wide but taller at 37.3 inches, whereas the COSTWAY is wider at 35.8 inches but shorter at 12 inches. This form factor may suit different wall spaces. Both offer smart home integration and similar efficiency, making them comparable choices for standard 230V setups in medium to large rooms.
Della Vario 9000 BTU Mini Split
The Della Vario 9000 BTU Mini Split is designed for small rooms, offering half the cooling capacity of the COSTWAY Blast Pro. It shares the same 20 SEER2 efficiency and 230V power requirement, plus Wi-Fi and Alexa smart control. The indoor unit dimensions are similar in width to the ROVSUN but slightly different in height. You sacrifice significant cooling power for a more compact system suitable for smaller spaces. If you only need to cool a room under 400 square feet, this efficient, quiet option provides the same smart connectivity without the bulk of an 18000 BTU system.
ROVSUN 28000 BTU Tri-Zone Mini Split
The ROVSUN 28000 BTU Tri-Zone Mini Split is built for multi-room cooling, supporting three separate zones with individual controls. It uses a single outdoor unit with 28000 BTU total capacity, split into three 9000 BTU indoor units. This contrasts with the COSTWAY’s single 18000 BTU unit for one large space. Both operate on 230V with 20 SEER2 efficiency and Wi-Fi control. The outdoor unit is significantly larger and heavier at 179 pounds. If you need to climate-control three distinct areas simultaneously, this tri-zone solution is the practical alternative to installing multiple single-zone systems.
YITAHOME 12K BTU 20 SEER2 Mini Split
The YITAHOME 12000 BTU Mini Split offers a middle ground in capacity between the Della 9000 BTU and the COSTWAY 18000 BTU models. It covers smaller rooms while maintaining the 20 SEER2 efficiency and 230V power requirement. Smart control via Wi-Fi is included, matching the COSTWAY’s connectivity features. The indoor unit is slightly narrower and shorter than the COSTWAY’s. You give up the larger coverage area of the 18000 BTU model for a more compact system. This choice suits buyers who find the COSTWAY too powerful for their specific room size but still want high efficiency and smart features.
GrowthWing 18k BTU 230V Mini Split
The GrowthWing 18k BTU Mini Split matches the COSTWAY Blast Pro in cooling capacity, covering up to 1,250 square feet. It shares the same 20 SEER2 efficiency rating and 230V power requirement, along with Wi-Fi and Alexa support. The indoor unit dimensions are nearly identical, with a slight difference in height. The main distinction is the outdoor unit weight, which is 88 pounds for the GrowthWing. If you prefer a slightly different brand with similar specs and smart capabilities, this model offers comparable performance for medium-sized rooms without significant differences in coverage or efficiency.
Quick picks
Our 7 picks
COSTWAY Blast Pro 18000 BTU 230V
Best for: large spaces with 208/230V power
- 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 COSTWAY unit delivers 18,000 BTU cooling and heating for spaces up to 1250 sq.ft. It operates on 208/230V and achieves a 20 SEER2 efficiency rating. The system includes Wi-Fi connectivity for app control and voice commands via Alexa or Google Assistant. You get 4D airflow, 8 fan speeds, and operation down to 28 dB. It is built for extreme temperatures, heating at -4℉ and cooling at 127℉.
Pros
- 20 SEER2 energy efficiency rating
- Wi-Fi and voice control support
- Operates in extreme weather (-4℉ to 127℉)
- Quiet operation at 28 dB
Cons
- Requires 208/230V hardwired connection
- No 115V plug-in option for this model
- Heavier indoor unit at 20.9 lbs
Good fit if
- You need cooling for a large 1250 sq.ft. room
- You have a 208/230V electrical circuit available
- You want smart app and voice control features
Skip if
- You only have standard 115V outlets
- You are cooling a space larger than 1250 sq.ft.
- You prefer a lighter indoor unit under 20 lbs
Verdict: COSTWAY 18000 BTU Mini Split is a high-capacity, efficient choice for large rooms with 208/230V wiring. It fits buyers who need strong performance in extreme temperatures and want smart connectivity.
ROVSUN 12000 BTU 230V Mini Split
Best for: medium rooms needing smart control and quiet operation
- Cooling Capacity
- 12000 BTU
- Efficiency Rating
- 20 SEER2, 20 SEER
- Voltage
- 230V
- Coverage Area
- Up to 550 sq.ft.
- Heat Pump
- Heat Pump
- Smart Connectivity
- Wi-Fi, App, Alexa, Google Assistant
View on Amazon: ROVSUN 12000 BTU 230V Mini Split Affiliate link
This ROVSUN unit offers 12,000 BTU cooling and heating for spaces up to 550 square feet. It runs on 230V power and achieves a 20 SEER2 efficiency rating. The inverter compressor adjusts speed to save energy. You get smart control via Wi-Fi, an app, and voice assistants like Alexa. It operates quietly at 28dB in mute mode. This system suits you if you need efficient, year-round comfort for a medium-sized room.
Pros
- 20 SEER2 efficiency rating for energy savings
- Wi-Fi and app control with voice assistant support
- Ultra-quiet 28dB operation in mute mode
- Inverter technology adjusts compressor speed automatically
Cons
- 12,000 BTU capacity is lower than the 18,000 BTU alternatives
- Requires 230V electrical connection, not standard 115V
- Extra power cord is not included in the kit
Good fit if
- You need smart app and voice control features
- You have a 230V outlet available for installation
- You want a quiet unit for a bedroom or office
Skip if
- You require 18,000 BTU or higher cooling capacity
- You only have standard 115V household outlets
- You prefer a unit that includes all necessary power cords
Verdict: ROVSUN 12000 BTU 20 SEER2 Mini Split fits you if you prioritize smart connectivity and quiet operation in a medium-sized space. It is a solid choice for rooms up to 550 square feet where 230V power is available.
TOSOT 18,000 BTU WiFi Mini Split
Best for: smart home users needing 230V efficiency
- Cooling Capacity
- 18,000 BTU
- Efficiency Rating
- 20 SEER2
- Voltage
- 230V
- Heat Pump
- Heating System
- Smart Connectivity
- Wifi, Alexa, GREE+ app
- Smart Control
- Wi-Fi, Alexa
View on Amazon: TOSOT 18,000 BTU WiFi Mini Split Affiliate link
The TOSOT 18,000 BTU Mini Split delivers efficient cooling and heating with a 20 SEER2 inverter compressor. It operates on 230V power and includes WiFi connectivity for control via the GREE+ app or Alexa. The unit measures 37.3 inches in height and 23.3 inches in width. It includes a 16 ft. copper line set. This system suits you if you need reliable climate control for medium-sized rooms with smart integration.
Pros
- 20 SEER2 inverter compressor for energy efficiency
- WiFi control via GREE+ app and Alexa
- Includes 16 ft. copper line set
- Quiet operation from 22dB to 36dB
Cons
- Requires professional installation for vacuuming and refrigerant
- Heating performance drops in extreme cold below -13°F
- No built-in display mentioned in specifications
Good fit if
- You want smart app control for scheduling
- You need a 230V unit for higher efficiency
- You prefer a system with included line set
Skip if
- You only have 115V outlets available
- You need heating below -13°F
- You want a unit with a built-in display
Verdict: TOSOT 18,000 BTU WiFi Mini Split offers strong efficiency and smart features for users who value app control and included installation parts. It is a solid choice for standard 230V setups.
Della Vario 9000 BTU Mini Split
Best for: small rooms needing smart, quiet cooling
- Cooling Capacity
- 9,000 BTU (0.75 Ton)
- Efficiency Rating
- 20 SEER2
- Voltage
- 208-230V
- Coverage Area
- Up to 400 sq ft
- Heat Pump
- Heat Pump
- Smart Connectivity
- Wi-Fi, Alexa, DELLA app
View on Amazon: Della Vario 9000 BTU Mini Split Affiliate link
The DELLA Vario Series 9000 BTU mini split offers 20 SEER2 efficiency on 208-230V power. It cools and heats spaces up to 400 square feet. Smart features include Alexa and WiFi connectivity via the DELLA app. The unit operates quietly at 29 dBa and includes a 16.4-foot line set. This model suits small rooms where precise temperature control and energy savings are priorities.
Pros
- 20 SEER2 efficiency rating for reduced energy consumption
- Works with Alexa and WiFi via the DELLA app
- Ultra-quiet operation at just 29 dBa
- Includes 16.4ft pre-charged installation line set
- I Feel mode adjusts temperature based on remote location
Cons
- Lower 9000 BTU capacity limits coverage to 400 square feet
- Requires professional installation and line-set vacuuming
- Lacks a built-in display on the indoor unit
Good fit if
- You need a quiet unit for a small bedroom or office
- You want smart control through Alexa or a smartphone app
- You have 208-230V power available for installation
Skip if
- You need to cool a room larger than 400 square feet
- You prefer a DIY setup without professional HVAC services
- You require a 115V plug-in unit instead of hardwired power
Verdict: DELLA Vario 9000 BTU Mini Split is a compact, efficient choice for small spaces where smart connectivity and low noise levels matter more than raw cooling power.
ROVSUN 28000 BTU Tri-Zone Mini Split
Best for: multi-room cooling with individual controls
- Cooling Capacity
- 28,000 BTU
- Efficiency Rating
- 20 SEER2
- Voltage
- 208-230V
- Number of Zones
- 3 Zone
- Heat Pump
- Heat Pump
- Smart Control
- Wi-Fi
View on Amazon: ROVSUN 28000 BTU Tri-Zone Mini Split Affiliate link
This ROVSUN system pairs one 28,000 BTU outdoor condenser with three 9,000 BTU indoor handlers. It delivers 20 SEER2 efficiency and Wi-Fi control. You get individual temperature management for each room via separate controllers. The unit operates on 208-230V power. It includes auto defrost and a 4-way air swing. This setup suits homes needing multi-room climate control without separate units.
Pros
- 28,000 BTU total cooling capacity
- 20 SEER2 energy efficiency rating
- Three separate 9,000 BTU indoor zones
- Wi-Fi smart control capability
- Quiet operation at 27–42 dBa
Cons
- Outdoor unit weighs 179 pounds
- Requires 208-230V electrical connection
- Indoor handlers limited to 9,000 BTU each
Good fit if
- You need to cool three separate rooms
- You want individual temperature control per zone
- You have a 208-230V power supply
Skip if
- You only need to cool one room
- You require a standard 110V outlet
- You prefer a single high-capacity indoor unit
Verdict: ROVSUN 28000 BTU Tri Zone Mini Split is a practical solution for multi-room cooling. It fits buyers who need separate climate control for three spaces without installing multiple outdoor units.
YITAHOME 12K BTU 20 SEER2 Mini Split
Best for: smaller rooms with 208-230V power
- Cooling Capacity
- 12000 BTU
- Efficiency Rating
- 20 SEER2
- Voltage
- 208-230V
- Coverage Area
- Up to 750 sq ft
- Heat Pump
- Heat Pump
- Smart Control
- Wi-Fi
View on Amazon: YITAHOME 12K BTU 20 SEER2 Mini Split Affiliate link
This YITAHOME unit offers 12,000 BTU cooling and heating for spaces up to 750 sq. ft. It runs on 208-230V power and achieves a 20 SEER2 efficiency rating. You get Wi-Fi control, six operating modes, and quiet operation down to 25 dB in sleep mode. The system handles temperatures from -4°F to 122°F. It is a solid mid-size option for homes needing reliable climate control without the bulk of larger units.
Pros
- 20 SEER2 energy efficiency rating
- Wi-Fi smart control included
- Quiet operation at 25 dB in sleep mode
- Operates in extreme temps from -4°F to 122°F
Cons
- 12,000 BTU capacity is lower than the 18,000 BTU target
- Requires 208-230V hardwired connection, not standard 115V
- Must be installed by a licensed HVAC professional
Good fit if
- You need a 12,000 BTU unit for a smaller room
- You have 208-230V electrical service available
- You want Wi-Fi control and quiet operation
Skip if
- You require 18,000 BTU cooling power
- You only have standard 115V outlets
- You prefer a DIY installation without a pro
Verdict: YITAHOME 12000 BTU Mini Split suits smaller rooms where 208-230V power is available. It delivers efficient heating and cooling with smart features for a quiet, comfortable environment.
GrowthWing 18k BTU 230V Mini Split
Best for: medium rooms needing smart control
- Cooling Capacity
- 18,000 BTU
- Efficiency Rating
- 20 SEER2
- Voltage
- 208/230V
- Coverage Area
- Up to 1250 Sq.Ft.
- Heat Pump
- Heat Pump
- Smart Connectivity
- WiFi, Alexa, App
View on Amazon: GrowthWing 18k BTU 230V Mini Split Affiliate link
The GrowthWing 18000 BTU Mini Split delivers 20 SEER2 efficiency and 18,000 BTU of cooling power for spaces up to 1,250 sq. ft. It operates on 208/230V and includes smart app control, Alexa compatibility, and 4D airflow. The unit runs quietly at 32dB and features I FEEL sensing for targeted comfort. This system suits you if you need reliable year-round heating and cooling with modern connectivity.
Pros
- 20 SEER2 energy efficiency rating
- 18,000 BTU cooling capacity
- Smart app and Alexa control
- Quiet 32dB operation level
- 4D multi-directional airflow
Cons
- Limited to 1,250 sq. ft. coverage
- Heavier 88-pound indoor unit
- Requires professional installation
Good fit if
- You need efficient cooling for a 1,250 sq. ft. space
- You want smart app and voice control
- You prefer quiet 32dB operation
Skip if
- You need to cool more than 1,250 sq. ft.
- You require a lighter unit under 88 pounds
- You prefer a self-installation setup
Verdict: GrowthWing 18000 BTU Mini Split offers strong efficiency and smart features for medium-sized rooms. It fits you if you prioritize quiet operation and app control over maximum coverage area.
Specifications side by side
| Spec | COSTWAY Blast Pro 18000 BTU 230V | ROVSUN 12000 BTU 230V Mini Split | TOSOT 18,000 BTU WiFi Mini Split | Della Vario 9000 BTU Mini Split | ROVSUN 28000 BTU Tri-Zone Mini Split | YITAHOME 12K BTU 20 SEER2 Mini Split | GrowthWing 18k BTU 230V Mini Split |
|---|---|---|---|---|---|---|---|
| Cooling Capacity | 18,000 BTU | 12000 BTU | 18,000 BTU | 9,000 BTU (0.75 Ton) | 28,000 BTU | 12000 BTU | 18,000 BTU |
| Efficiency Rating | 20 SEER2 | 20 SEER2, 20 SEER | 20 SEER2 | 20 SEER2 | 20 SEER2 | 20 SEER2 | 20 SEER2 |
| Voltage | 208/230V | 230V | 230V | 208-230V | 208-230V | 208-230V | 208/230V |
| Coverage Area | Up to 1,250 sq ft | Up to 550 sq.ft. | not stated | Up to 400 sq ft | not stated | Up to 750 sq ft | Up to 1250 Sq.Ft. |
| Number of Zones | not stated | not stated | not stated | not stated | 3 Zone | not stated | not stated |
| Heat Pump | Heat Pump | Heat Pump | Heating System | Heat Pump | Heat Pump | Heat Pump | Heat Pump |
| Smart Connectivity | Wi-Fi, App, Alexa, Google Assistant | Wi-Fi, App, Alexa, Google Assistant | Wifi, Alexa, GREE+ app | Wi-Fi, Alexa, DELLA app | not stated | not stated | WiFi, Alexa, App |
| Smart Control | Wi-Fi, Alexa | Wi-Fi | Wi-Fi, Alexa | Wi-Fi, Alexa | Wi-Fi | Wi-Fi | Wi-Fi, Alexa |
| Dimensions | 7.68 × 35.8 × 12 inches | 7.99 × 31.9 × 11.5 inches | 16.9 × 23.3 × 37.3 inches | 8 × 31.9 × 11.5 inches | 16.6 × 38.5 × 31.6 inches | 8.1 × 31.7 × 10.6 inches | 8.11 × 35.8 × 11.6 inches |
| Weight | 20.9 pounds | 70 pounds | not stated | 19.8 pounds | 179 pounds | 68.3 pounds | 88 pounds |
| Color | White | White | White | White | White | White | White |
| Model | Blast Pro | RV12T2/19-I/RV12T2/19-O | SU-COSMO18-230 | TL-9K2VB-20S-I+O | 3 zone-28K/9K-9K-9K | MAYIHbWUxi | HP12N |
| Size | not stated | not stated | WiFi - 18,000 BTU 230V (20 SEER2) | 9,000 BTU - 230V / 20 SEER2 | 3 Zone 28000 BTU (9+9+9) | not stated | 18000 BTU 208/230V |
For smart climate control options, you can compare mysa smart thermostat mini split heat alternatives that match your system specifications.
Frequently asked questions
Which 18000 BTU mini split offers the best smart home integration?
The TOSOT 18,000 BTU WiFi Mini Split stands out for smart home users. It supports both Wi-Fi and Alexa controls, allowing you to manage your climate through voice commands or an app. This model also runs on 230V power with a 20 SEER2 efficiency rating, making it a practical choice for those who value connectivity alongside performance.
Can I use a 12000 BTU unit instead of an 18000 BTU model?
Yes, if your space is smaller. The ROVSUN 12000 BTU Mini Split is designed for medium rooms up to 550 square feet. It shares the same 20 SEER2 efficiency and 230V power requirements as larger models. You get quiet operation and Wi-Fi connectivity, which makes it a suitable alternative if you do not need the higher cooling capacity of an 18000 BTU unit.
What is the best option for cooling multiple rooms at once?
The ROVSUN 28000 BTU Tri-Zone Mini Split is built for multi-room cooling. It connects three indoor units to a single outdoor unit, providing separate climate control for each space. This setup saves you from installing multiple outdoor compressors. It runs on 230V power and includes Wi-Fi smart control for convenient management of all three zones from one central system.
Which mini split is best for small spaces under 550 square feet?
The Della Vario 9000 BTU Mini Split is ideal for small rooms. It delivers efficient cooling with a 20 SEER2 rating and supports 230V power. You get smart features including Wi-Fi and Alexa compatibility. Its compact design and quiet operation make it a strong alternative if your space does not require the higher output of an 18000 BTU system.
Do all these alternatives require 230V power?
Yes, every model listed here operates on 230V or 208/230V power. This includes the COSTWAY Blast Pro, ROVSUN 12000 BTU, TOSOT 18,000 BTU, Della Vario 9000 BTU, ROVSUN Tri-Zone, YITAHOME 12K BTU, and GrowthWing 18k BTU units. You must ensure your electrical setup supports this voltage before installation, as standard 120V outlets are not compatible with these high-efficiency systems.
Which model offers the largest coverage area for a single room?
The GrowthWing 18k BTU Mini Split is rated for up to 1,250 square feet. It provides strong efficiency with a 20 SEER2 rating and supports Wi-Fi and Alexa controls. This makes it a suitable alternative if you need to cool a larger medium-sized room. It runs on 230V power and focuses on quiet operation alongside its broad coverage capabilities.