6 Best Alternatives to the COSTWAY 12000 BTU Mini Split (2026)
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The costway 12000 btu mini split alternatives list helps you find units that match its core capabilities. This original model offers strong 115V performance with a high 24 SEER2 rating and smart app control. It is a reliable choice for medium-sized rooms that need precise temperature management via Wi-Fi. However, you might look for other options if you prefer different efficiency levels, specific coverage areas, or distinct brand features. Some buyers seek quieter operation or different physical dimensions for their installation space.
We selected these 6 alternatives because their specifications overlap with the original product. Each option provides 115V power and smart connectivity, ensuring compatibility with standard home circuits. You will find variations in SEER2 ratings, ranging from 19 to 25, allowing you to balance efficiency against your budget. The list includes models with different cooling capacities, such as 9000 BTU units for smaller spaces. By comparing these specs, you can identify the best fit for your specific room size and electrical setup without compromising on essential features.
Our top pick: COSTWAY 12000 BTU 115V Mini Split.
How these alternatives differ
Rellytech 12000 BTU 20 SEER2 Mini Split
The Rellytech 12000 BTU model runs on the same 115V circuit but offers a lower 20 SEER2 efficiency rating compared to the COSTWAY’s 24 SEER2. You get Wi-Fi smart control and similar cooling capacity for medium rooms. The indoor unit is slightly wider and deeper, which may affect your wall space. This unit is a practical choice if you need standard voltage but can accept lower efficiency for a potentially lower cost. It lacks the premium compressor features found in the top pick, making it a straightforward option for basic climate control needs.
COSTWAY Blast Pro 12000 BTU
This COSTWAY Blast Pro variant also uses 115V power and matches the 20 SEER2 efficiency of the Rellytech, falling short of the original’s 24 SEER2. It features Wi-Fi connectivity for app control. The indoor unit is significantly taller, measuring 12.1 inches compared to the original’s 8 inches, which changes the visual profile in your room. It maintains the same 12000 BTU cooling capacity. You should consider this model if you prioritize the Blast Pro design or specific aesthetic preferences over peak energy efficiency. It remains a solid smart-controlled option for standard household circuits.
Mountman 9000 BTU 115V Mini Split
The Mountman 9000 BTU unit is designed for smaller spaces, offering less cooling power than the 12000 BTU COSTWAY. It runs on 115V with 19 SEER2 efficiency, which is lower than the original’s 24 SEER2. It includes Wi-Fi smart control for remote management. The lower capacity makes it unsuitable for larger rooms but ideal for bedrooms or offices under 450 square feet. You get a compact 110V solution if your primary need is spot cooling rather than whole-room temperature regulation. It sacrifices raw power for suitability in tighter electrical or spatial constraints.
ROVSUN 9000 BTU 20 SEER2 Mini Split
The ROVSUN 9000 BTU model provides less cooling capacity than the 12000 BTU original, targeting smaller rooms. It operates on 115V with 20 SEER2 efficiency, which is lower than the COSTWAY’s 24 SEER2. It includes Wi-Fi smart control and is noted for quiet operation. This unit is best for users who prioritize low noise levels in bedrooms or home offices over high cooling output. The reduced BTU count means it cannot handle larger spaces effectively. You choose this alternative if your room size is small and quiet performance is more critical than maximum cooling speed.
DELLA Motto 12K BTU 115V
The Della Motto 12000 BTU unit matches the original’s cooling capacity and runs on 115V. However, it has a 20 SEER2 efficiency rating, which is lower than the COSTWAY’s 24 SEER2. It offers Wi-Fi and Alexa smart control. The unit is designed for rooms up to 550 square feet and emphasizes quiet operation at 27 dBA. You should pick this if you need strong cooling for medium rooms but value lower noise levels more than the highest efficiency rating. It provides a balanced mix of power and quiet performance for standard residential installations.
YITAHOME 12000 BTU 115V Mini Split
The YITAHOME 12000 BTU model matches the original’s cooling capacity and uses 115V power. It offers 20 SEER2 efficiency, which is lower than the COSTWAY’s 24 SEER2. It includes Wi-Fi smart control for app-based management. This unit is suitable for medium-sized rooms where you need reliable heating and cooling. You get similar performance in terms of BTU output but with less energy efficiency. It is a good alternative if you prioritize smart connectivity and adequate cooling power over the premium efficiency rating of the top pick. It fits well in standard home electrical setups.
Quick picks
Our 7 picks
COSTWAY 12000 BTU 115V Mini Split
Best for: 115V plug-in smart cooling
- Cooling Capacity
- 12,000 BTU
- Efficiency Rating
- 24 SEER2
- Voltage
- 115V
- Coverage Area
- Up to 750 Sq.Ft
- Heat Pump
- Heat Pump
- Smart Connectivity
- WiFi, App, Alexa
View on Amazon: COSTWAY 12000 BTU 115V Mini Split Affiliate link
This 12000 BTU mini split offers 24 SEER2 efficiency on 115V power. It uses R32 refrigerant and inverter technology for precise temperature control. Smart features include Wi-Fi, app control, and Alexa compatibility. The unit heats down to -13°F and cools up to 126°F. It includes four fan speeds and 4D auto swing. This model suits rooms needing reliable cooling and heating with modern smart controls.
Pros
- 24 SEER2 efficiency rating
- 115V standard outlet operation
- Wi-Fi and Alexa smart control
- Heats down to -13°F
Cons
- Lower SEER2 than 20 SEER2 competitors
- Heavier indoor unit at 28.5 pounds
- No 208-230V option for this specific 12000 BTU listing
Good fit if
- You need a 115V plug-in unit
- You want smart app control
- You need heating in cold climates
Skip if
- You require 208-230V power
- You want the highest SEER2 rating
- You need a lighter indoor unit
Verdict: COSTWAY 12000 BTU Mini Split provides solid 115V performance with smart features. It fits buyers who prioritize standard voltage and app control over peak efficiency.
Rellytech 12000 BTU 20 SEER2 Mini Split
Best for: 115V circuits needing high efficiency
- 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 12000 BTU mini split offers 20 SEER2 efficiency on a 115V circuit. It covers up to 750 sq ft with R454B refrigerant. Wi-Fi and voice control allow remote management. It operates between -13°F and 122°F. This unit suits you if you need strong cooling and heating performance without requiring a 230V electrical line.
Pros
- 20 SEER2 energy efficiency rating
- Works on standard 115V outlet
- Wi-Fi and voice command support
- Operates in temperatures from -13°F to 122°F
Cons
- Heavier indoor unit at 75.3 pounds
- Larger indoor width of 31.9 inches
- Requires licensed HVAC technician for installation
Good fit if
- You have a standard 115V circuit available
- You need a unit for spaces up to 750 sq ft
- You want smart control via Wi-Fi
Skip if
- You only have a 230V electrical circuit
- You need a smaller indoor unit width
- You prefer a self-installation process
Verdict: Rellytech 12000 BTU 20 SEER2 Mini Split is a strong option for you if you need high efficiency and smart features on a standard 115V circuit. It delivers reliable performance for medium-sized rooms without requiring specialized electrical infrastructure.
COSTWAY Blast Pro 12000 BTU
Best for: standard 115V installations with smart control needs
- Cooling Capacity
- 12,000 BTU
- Efficiency Rating
- 20 SEER2
- Voltage
- 115V
- Coverage Area
- 750 sq ft
- Heat Pump
- Heat Pump
- Smart Connectivity
- Wi-Fi, App, Alexa, Google Assistant
View on Amazon: COSTWAY Blast Pro 12000 BTU Affiliate link
The COSTWAY 12000 BTU Blast Pro delivers efficient cooling and heating for rooms up to 750 square feet. It features a 20 SEER2 rating and operates on standard 115V power. Smart connectivity includes Wi-Fi, app control, and voice assistant support. The unit offers 7 modes, 8 fan speeds, and 4D airflow. It runs quietly at 28 dB and includes a self-clean function for easy maintenance.
Pros
- 20 SEER2 energy efficiency rating
- Wi-Fi and app control with Alexa and Google Assistant support
- Operates reliably in extreme temperatures from -4℉ to 127℉
- Quiet operation at 28 dB with 4D airflow design
- 7 operating modes and 8 fan speeds for precise comfort
Cons
- Larger indoor unit dimensions at 31.9 inches wide
- Heavier indoor unit at 19.8 pounds
- Lower cooling capacity compared to 18000 BTU alternatives
Good fit if
- You need a standard 115V connection for easy installation
- You want smart home integration with voice assistants
- You require reliable performance in very hot or cold weather
Skip if
- You need a more compact indoor unit for small spaces
- You require higher cooling capacity for larger rooms
- You prefer a 208-230V system for greater efficiency
Verdict: The COSTWAY 12000 BTU Blast Pro is a solid choice for homeowners seeking efficient, smart-controlled climate management in standard 115V setups. Its robust weather tolerance and quiet operation make it suitable for year-round comfort in medium-sized rooms.
Mountman 9000 BTU 115V Mini Split
Best for: smaller rooms needing 110V power
- 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 offers 9,000 BTU cooling and heating for spaces up to 450 square feet. It runs on standard 110/120V power and achieves a 19 SEER2 efficiency rating. You get built-in Wi-Fi for smart control and Alexa compatibility. The system includes self-cleaning functions and ultra-quiet operation at 26dB in sleep mode. It is a solid option if you need a smaller capacity unit for a bedroom or office rather than a whole room.
Pros
- 19 SEER2 energy efficiency rating
- Built-in Wi-Fi and Alexa compatibility
- Ultra-quiet 26dB operation in sleep mode
- Standard 110/120V voltage compatibility
Cons
- Lower 9000 BTU capacity compared to 12000 BTU alternatives
- Smaller coverage area of up to 450 square feet
- No mention of included remote control in specifications
Good fit if
- You need a 110/120V unit for a smaller room
- You want smart control via Wi-Fi and Alexa
- You prioritize quiet operation for a bedroom
Skip if
- You require 12000 BTU for a larger space
- You need a 208/230V high-voltage system
- You want a higher 20 SEER2 efficiency rating
Verdict: Mountman 9000 BTU Mini Split is a compact, efficient choice for smaller rooms under 450 square feet. You should pick it if you need 110V power and smart features, but skip it if you need the higher capacity of the 12000 BTU models on this list.
ROVSUN 9000 BTU 20 SEER2 Mini Split
Best for: small rooms needing quiet, smart 115V cooling
- 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 9000 BTU of cooling and heating for rooms up to 400 square feet. It runs on a standard 115V outlet and achieves a 20 SEER2 efficiency rating. The system includes Wi-Fi connectivity for app and voice control via Alexa or Google Assistant. It operates quietly at 28 dB in mute mode. This model suits smaller spaces where energy efficiency and smart features are priorities.
Pros
- 20 SEER2 efficiency rating for energy savings
- Wi-Fi, app, and voice control compatibility
- Ultra-quiet 28 dB operation in mute mode
- Works with standard 115V household outlets
Cons
- Lower 9000 BTU capacity than most 12000 BTU competitors
- Smaller coverage area of 400 sq.ft
- Requires professional installation for safety and performance
Good fit if
- You need a 115V unit for smaller rooms
- You want smart app and voice control
- You prioritize quiet operation for bedrooms
Skip if
- You require 12000 BTU for larger spaces
- You prefer a self-installation process
- You need a 230V high-power system
Verdict: ROVSUN 9000 BTU 115V Mini Split fits users with smaller rooms who need efficient, quiet cooling on a standard outlet. It is ideal for bedrooms or offices where smart control and low noise matter more than raw power.
DELLA Motto 12K BTU 115V
Best for: small rooms up to 550 sq. ft.
- Cooling Capacity
- 12,000 BTU
- Efficiency Rating
- 20 SEER2
- Voltage
- 115V
- Coverage Area
- Up to 550 sq ft
- Heat Pump
- Heat Pump
- Smart Connectivity
- Alexa, Wi-Fi
View on Amazon: DELLA Motto 12K BTU 115V Affiliate link
The Della Motto Series 12000 BTU mini split cools and heats up to 550 sq. ft. It runs on 115V power with a 20 SEER2 efficiency rating. The unit uses R-32 refrigerant and operates at 27 dBA. You get Wi-Fi and Alexa control via the remote sensor. It includes a 16ft copper line set for installation.
Pros
- 20 SEER2 energy efficiency rating
- Cools and heats up to 550 sq. ft.
- Ultra-quiet 27 dBA operation
- Wi-Fi and Alexa smart control
- R-32 refrigerant for cleaner air
Cons
- Smaller coverage area than 12000 BTU competitors
- Remote control senses temperature, not the indoor unit
- No dedicated mobile app listed in specifications
Good fit if
- You need efficient cooling for a small room under 550 sq. ft.
- You want quiet operation at 27 dBA
- You prefer 115V electrical connections
Skip if
- You need to cool a space larger than 550 sq. ft.
- You require a dedicated smartphone app for control
- You need a unit with indoor unit temperature sensing
Verdict: Della Motto 12000 BTU 20 SEER2 fits small rooms up to 550 sq. ft. where quiet 27 dBA operation and 115V power are priorities.
YITAHOME 12000 BTU 115V Mini Split
Best for: Medium rooms needing quiet, smart heat pump
- 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
The YITAHOME 12000 BTU Mini Split delivers cooling and heating for spaces up to 750 square feet. It achieves a 20 SEER2 efficiency rating, which saves energy compared to lower-rated models. The unit includes Wi-Fi connectivity and Alexa compatibility for smart control. It operates quietly at under 41 dB and functions in temperatures from 5°F to 118°F. This system suits users who want a versatile, efficient heat pump for bedrooms or living areas.
Pros
- 20 SEER2 efficiency rating for energy savings
- Wi-Fi and Alexa smart control support
- Operates quietly at under 41 dB
- Functions in temperatures from 5°F to 118°F
- Includes negative ion and PM2.5 removal modes
Cons
- Maximum coverage area is 750 square feet
- Indoor unit width is 31.2 inches
- Requires licensed HVAC professional installation
Good fit if
- You need a heat pump for a room up to 750 square feet
- You want smart control via Wi-Fi and Alexa
- You require quiet operation under 41 dB
Skip if
- You need coverage for spaces larger than 750 square feet
- You prefer a unit with a lower indoor width
- You want to handle the installation yourself
Verdict: YITAHOME 12000 BTU 20 SEER2 Mini Split is a solid choice for medium-sized rooms where quiet, efficient cooling and heating are priorities. It fits users who value smart connectivity and all-weather performance without needing excessive capacity.
Specifications side by side
| Spec | COSTWAY 12000 BTU 115V Mini Split | Rellytech 12000 BTU 20 SEER2 Mini Split | COSTWAY Blast Pro 12000 BTU | Mountman 9000 BTU 115V Mini Split | ROVSUN 9000 BTU 20 SEER2 Mini Split | DELLA Motto 12K BTU 115V | YITAHOME 12000 BTU 115V Mini Split |
|---|---|---|---|---|---|---|---|
| Cooling Capacity | 12,000 BTU | 12,000 BTU | 12,000 BTU | 9000 BTU | 9000 BTU | 12,000 BTU | 12000 BTU |
| Efficiency Rating | 24 SEER2 | 20 SEER2 | 20 SEER2 | 19 SEER2 | 20 SEER2, 19 SEER | 20 SEER2 | 20 SEER2 |
| Voltage | 115V | 110V/115V | 115V | 110/120V | 115V | 115V | 115V |
| Coverage Area | Up to 750 Sq.Ft | Up to 750 sq ft | 750 sq ft | Up to 450 Sq.Ft | Up to 400 sq.ft. | Up to 550 sq ft | 750 sq. ft. |
| Heat Pump | Heat Pump | Heat Pump | Heat Pump | Heat Pump | Heat Pump | Heat Pump | Heat pump |
| Smart Connectivity | WiFi, App, Alexa | Wi-Fi, Voice control, Smartphone app | Wi-Fi, App, Alexa, Google Assistant | Built-in WiFi & Alexa compatible | Wi-Fi, App, Alexa, Google Assistant | Alexa, Wi-Fi | Wi-Fi, Alexa |
| Smart Control | Wi-Fi, Alexa | Wi-Fi | Wi-Fi, Alexa | Wi-Fi | Wi-Fi | Wi-Fi, Alexa | Wi-Fi, Alexa |
| Dimensions | 12 × 32.5 × 8 inches | 8.66 × 31.9 × 11.4 inches | 7.48 × 31.9 × 12.1 inches | 8.23 × 32.3 × 11.9 inches | 7.99 × 31.9 × 11.5 inches | 7.9 × 31.2 × 11.5 inches | 7.9 × 31.2 × 11.5 inches |
| Weight | 28.5 pounds | 75.3 pounds | 19.8 pounds | 68.6 pounds | 70 pounds | not stated | 22 pounds |
| Size | 12000BTU, 115V, 24 SEER2-WIFI | 12000BTU,115V,20 SEER2-WiFi | not stated | not stated | 8.07"D x 31.92"W x 11.49"H | 12,000 BTU - 115V - 20 SEER2 | not stated |
| Color | White | White | White | White | White | White | White |
| Model | 10895US-WH-CYFP | CE0-1 | Blast Pro | MM-HWF9-115 | RV09T1/20-I/RV09T1/20-O | 12K1VRH-20S-JA-I+O | MAYIH4qu0k |
If you are comparing similar capacities, friedrich chill premier 12000 btu alternatives offer another set of cooling specifications.
Frequently asked questions
Which alternative offers the highest efficiency rating?
The COSTWAY 12000 BTU 115V Mini Split provides the highest efficiency at 24 SEER2. This rating exceeds the 20 SEER2 found in the Rellytech, COSTWAY Blast Pro, ROVSUN, Della, and YITAHOME models. You get superior energy performance for medium-sized rooms while maintaining standard 115V plug-in convenience and Wi-Fi smart control.
Are all these mini splits compatible with standard 115V outlets?
Yes, every listed alternative operates on 115V power. This includes the 12000 BTU models from COSTWAY, Rellytech, and Della, as well as the 9000 BTU options from Mountman and ROVSUN. You do not need specialized electrical infrastructure for any of these units, making them suitable for standard home circuits.
Which model is best for smaller rooms under 450 square feet?
The Mountman 9000 BTU Mini Split is designed for smaller rooms under 450 square feet. It delivers 115V power and 19 SEER2 efficiency in a compact form. Skip the 12000 BTU models if you need lower capacity. This unit also includes Wi-Fi smart control for convenient management.
Do these units support smart home integration?
All listed models feature Wi-Fi smart control capabilities. The Della Motto 12K BTU 115V adds Alexa compatibility for broader integration. You can manage cooling and heating remotely via app on any of these units, including the COSTWAY, Rellytech, and YITAHOME options, without needing extra hubs.
Which alternative provides the quietest operation?
The Della Motto 12K BTU 115V offers quiet 27 dBA operation. This makes it ideal for bedrooms or offices where low noise matters. Other models like the COSTWAY Blast Pro and ROVSUN also emphasize quiet performance, but the Della unit specifically highlights this low decibel level for comfort.
Which model covers up to 550 square feet?
The Della Motto 12K BTU 115V is rated for small rooms up to 550 square feet. It combines this coverage with 20 SEER2 efficiency and 115V power. You get quiet 27 dBA operation and smart control, making it a strong choice for medium spaces that need precise climate management.
Which unit is the lightest indoor component?
The COSTWAY Blast Pro 12000 BTU is the lightest, weighing just 19.8 pounds. This is significantly lighter than the Rellytech at 75.3 pounds or the ROVSUN at 70 pounds. You get a compact indoor unit that is easy to mount while still offering 20 SEER2 efficiency and Wi-Fi control.