9 Best COSTWAY 23 SEER2 Mini Splits, Compared
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These are the best COSTWAY 23 SEER2 mini splits for your home. We compared 9 models using only the specifications published on the listings. The top pick is the COSTWAY 20K Dual Zone 23 SEER2. It leads because it offers dual-zone coverage with high efficiency. This model fits buyers who need quiet cooling for two specific areas. You can trust these rankings because they rely strictly on published data. This guide helps you decide which unit matches your space and power needs.
Quick picks
The best fit for you
- You want the best overall dual-zone efficiency COSTWAY 20K Dual Zone 23 SEER2 This 20K dual-zone unit offers 23 SEER2 efficiency for two rooms.
- You need flexible sizing for two unequal rooms COSTWAY 28K Dual Zone 9000+12000 BTU This model pairs a 9000 BTU and 12000 BTU head for uneven spaces.
- You require independent control for three distinct rooms COSTWAY 24k Tri 3 Zone Mini Split This tri-zone system splits capacity into 7k, 7k, and 12k BTU heads.
- You need to cool four separate areas efficiently COSTWAY 36k Quad 4 Zone Mini Split This quad-zone unit distributes 7k, 7k, 9k, and 24k BTU across four rooms.
Our 9 picks
COSTWAY 20K Dual Zone 23 SEER2
Best for: two-room climate control with high efficiency
- Efficiency Rating
- 23 SEER2 (what this guide is about)
- Cooling Capacity
- 20000 BTU
- Voltage
- 208/230V
- Number of Zones
- 2 Zone
- Heat Pump
- Heat Pump
- Smart Connectivity
- Wi-Fi, Google Assistant
View on Amazon: COSTWAY 20K Dual Zone 23 SEER2 Affiliate link
This dual zone mini split delivers 20,000 BTU total cooling across two 12,000 BTU indoor units. It features a 23 SEER2 efficiency rating and inverter technology for stable temperatures. The system operates quietly at 28 dB and includes Wi-Fi control with Google Assistant support. It is designed for homes needing flexible, room-by-room climate management with reliable performance in extreme weather.
Pros
- 23 SEER2 energy efficiency rating
- Dual zone design with 12k+12k BTU split
- Quiet operation at 28 dB
- Wi-Fi enabled with Google Assistant support
- Operates in temperatures from -4°F to 127°F
Cons
- Lower total capacity (20k BTU) compared to other 24k-36k options on the list
- Only two zones available, limiting flexibility for larger homes
- No mention of smartphone app control, only Wi-Fi and remote
Good fit if
- You need precise temperature control for two specific rooms
- You prioritize high energy efficiency with a 23 SEER2 rating
- You want quiet operation for living spaces
Skip if
- You require cooling for more than two zones
- You need higher total BTU output for large spaces
- You prefer a single-zone system for simplicity
Verdict: COSTWAY 20K Dual Zone 23 SEER2 Mini Split is a practical choice for homeowners who need efficient, quiet cooling for two specific areas. It fits buyers who value energy savings and smart voice control over raw capacity.
COSTWAY 28K Dual Zone 9000+12000 BTU
Best for: two-zone cooling with smart features
- Efficiency Rating
- 23 SEER2 (what this guide is about)
- Cooling Capacity
- 28000 BTU
- Voltage
- 208/230V
- Number of Zones
- 2 Zone
- Heat Pump
- Heat Pump
- Smart Connectivity
- Wi-Fi, Alexa, Google Assistant
View on Amazon: COSTWAY 28K Dual Zone 9000+12000 BTU Affiliate link
This 28,000 BTU dual-zone mini split delivers 9,000 and 12,000 BTU per zone. It features a 20 SEER2 efficiency rating, which is lower than the 23 SEER2 standard for this list. The unit includes Wi-Fi control, operates at 28 dB, and handles extreme temperatures. It suits larger spaces needing flexible zoning and smart connectivity.
Pros
- 28,000 BTU total cooling capacity
- 20 SEER2 energy efficiency rating
- Wi-Fi control with Alexa and Google Assistant
- Low noise operation at 28 dB
Cons
- 20 SEER2 rating is lower than the 23 SEER2 standard on this list
- Single zone configuration limits multi-room flexibility
- No 4-zone or tri-zone options available
Good fit if
- You need a dual-zone system for two specific rooms
- You prioritize lower upfront cost over maximum efficiency
- You want smart home integration via Wi-Fi
Skip if
- You require the highest 23 SEER2 efficiency rating
- You need to cool three or more separate zones
- You need a single high-capacity unit for one large room
Verdict: COSTWAY 28K Dual Zone Mini Split offers solid dual-zone coverage with smart controls, but its 20 SEER2 rating falls short of the list's 23 SEER2 standard, making it best for budget-conscious buyers who only need to condition two rooms.
COSTWAY 36k Dual Zone 23 SEER2
Best for: large spaces with two equal zones
- Efficiency Rating
- 23 SEER2 (what this guide is about)
- Cooling Capacity
- 36000 BTU
- Voltage
- 208-230V
- Number of Zones
- 2 Zone
- Heat Pump
- Heat Pump
- Smart Control
- Wi-Fi
View on Amazon: COSTWAY 36k Dual Zone 23 SEER2 Affiliate link
This COSTWAY 36k Dual 2 Zone Mini Split offers 36,000 BTU of cooling capacity split evenly into two 7,000 BTU indoor units. It features a 23 SEER2 efficiency rating and R32 refrigerant. The outdoor unit operates in temperatures from -13°F to 125°F. You can control it via Wi-Fi or remote. It includes six modes and five wind speeds. This unit suits spaces needing high total cooling with balanced output per zone.
Pros
- 23 SEER2 efficiency rating for lower energy use
- 36,000 BTU total cooling capacity
- Wi-Fi enabled for smartphone control
- R32 refrigerant with low GWP of 675
Cons
- Each zone provides only 7,000 BTU, which is low for individual rooms
- Requires professional HVAC installation
- Total capacity is distributed equally, limiting flexible sizing per zone
Good fit if
- You need high total cooling for a large open area
- You want two zones with identical cooling output
- You prefer Wi-Fi control over app-only management
Skip if
- You need different cooling capacities for each room
- You are cooling small rooms under 300 square feet
- You want to install the unit yourself without a pro
Verdict: COSTWAY 36k Dual 2 Zone Mini Split is best for large spaces requiring high total output with identical cooling in both zones. It delivers strong efficiency but offers limited flexibility for uneven room sizes.
COSTWAY 30k Tri 3 Zone Mini Split
Best for: multi-room cooling with high efficiency
- Efficiency Rating
- 23 SEER2 (what this guide is about)
- Cooling Capacity
- 30000 BTU
- Voltage
- 208-230V
- Number of Zones
- 3 Zone
- Heat Pump
- Heat Pump
- Smart Control
- Wi-Fi
View on Amazon: COSTWAY 30k Tri 3 Zone Mini Split Affiliate link
This COSTWAY mini split delivers 30,000 BTU of cooling across three independent zones. It features a 23 SEER2 efficiency rating and uses R32 refrigerant. The system supports 208-230V power and includes Wi-Fi control for remote adjustments. You can set temperatures for rooms requiring 7,000, 12,000, or 18,000 BTU. This unit suits homes needing flexible zone management with high energy efficiency.
Pros
- 23 SEER2 efficiency rating for reduced energy consumption
- Three zones with 7k, 12k, and 18k BTU capacities
- Wi-Fi enabled for smartphone control and monitoring
- R32 refrigerant with low GWP of 675
Cons
- Requires 208-230V electrical connection, limiting installation options
- Indoor unit is 41.2 inches wide, larger than standard models
- Outdoor unit operates in temperatures down to -13°F only
Good fit if
- You need independent temperature control for three distinct rooms
- You have a 208-230V electrical supply available
- You want high efficiency with a 23 SEER2 rating
Skip if
- You only have standard 115V outlets available
- You need heating operation in temperatures below -13°F
- You prefer a more compact indoor unit under 36 inches
Verdict: COSTWAY 30k Tri 3 Zone Mini Split is a practical solution for multi-room climate control. It fits homes with 208-230V power that need high efficiency and flexible zone sizing.
COSTWAY 30k 2-Zone 23 SEER2 Mini Split
Best for: Two-zone cooling with smart control
- Efficiency Rating
- 23 SEER2 (what this guide is about)
- Cooling Capacity
- 30000 BTU
- Voltage
- 208-230V
- Number of Zones
- 2 Zone
- Heat Pump
- Heat Pump
- Smart Control
- Wi-Fi
View on Amazon: COSTWAY 30k 2-Zone 23 SEER2 Mini Split Affiliate link
This COSTWAY mini split delivers 30,000 BTU of cooling across two zones (7,000 and 9,000 BTU). It achieves a 23 SEER2 efficiency rating with R32 refrigerant. The unit supports 208-230V power and includes Wi-Fi smart control. You get independent temperature adjustment for each room. The outdoor unit operates in temperatures from -13℉ to 125℉. It is designed for homes needing flexible, energy-efficient climate control.
Pros
- High 23 SEER2 energy efficiency rating
- Dual zone control with 7,000 and 9,000 BTU indoor units
- Wi-Fi enabled for remote smartphone control
- R32 refrigerant with low GWP of 675
Cons
- Requires 208-230V electrical connection
- Limited to only two zones compared to quad options
- Indoor unit dimensions are 41.2 inches wide
Good fit if
- You need independent cooling for two separate rooms
- You have a 208-230V electrical supply available
- You want smart Wi-Fi control for scheduling
Skip if
- You require a single zone unit only
- You only have standard 110V outlets
- You need to control more than two zones
Verdict: COSTWAY 30k Dual Zone 23 SEER2 provides efficient two-zone cooling for larger spaces. It fits homes with 208-230V power that need separate temperature control for two rooms.
COSTWAY 36k Quad 4 Zone Mini Split
Best for: cooling four separate rooms efficiently
- Efficiency Rating
- 23 SEER2 (what this guide is about)
- Cooling Capacity
- 36,000 BTU
- Voltage
- 208-230V
- Number of Zones
- 4 Zone
- Heat Pump
- Heat Pump
- Smart Connectivity
- Wifi Enabled
View on Amazon: COSTWAY 36k Quad 4 Zone Mini Split Affiliate link
This COSTWAY unit delivers 36,000 BTU of cooling across four independent zones. It features a 23 SEER2 efficiency rating and R32 refrigerant. The system supports 208-230V power and includes Wi-Fi connectivity for remote control. You can adjust temperatures for each zone separately. The outdoor unit operates in temperatures from -13℉ to 125℉. This setup suits larger homes needing multi-room climate control.
Pros
- 23 SEER2 energy efficiency rating
- 36,000 BTU total cooling capacity
- Four independent zones for targeted comfort
- Wi-Fi enabled for smartphone control
- R32 refrigerant with low GWP
Cons
- Requires 208-230V electrical connection
- Largest indoor unit is 24,000 BTU
- Professional HVAC installation is mandatory
Good fit if
- You need to cool four separate rooms
- You have a 208-230V power supply available
- You want high efficiency for large spaces
Skip if
- You only need to cool one or two rooms
- You only have standard 115V outlets
- You prefer a single-zone system
Verdict: COSTWAY 36k Quad 4 Zone Mini Split is ideal for homeowners who need to manage temperatures in four distinct areas simultaneously. It fits those with the necessary high-voltage wiring and a need for substantial cooling power.
COSTWAY 24k 2-Zone 23 SEER2
Best for: Two-room cooling with independent control
- Efficiency Rating
- 23 SEER2 (what this guide is about)
- Cooling Capacity
- 24000 BTU (9000 BTU + 18000 BTU)
- Voltage
- 208-230V
- Number of Zones
- 2 Zone
- Heat Pump
- Heat Pump
- Smart Connectivity
- Wifi Enabled, Smartphone
View on Amazon: COSTWAY 24k 2-Zone 23 SEER2 Affiliate link
This COSTWAY mini split delivers 24,000 BTU of cooling across two zones, with 9,000 BTU for one room and 18,000 BTU for another. It operates at 23 SEER2 efficiency using R32 refrigerant. The system includes Wi-Fi control, a 24-hour timer, and six operating modes. It runs on 208-230V power. You get independent temperature adjustment for each zone, making it suitable for spaces with varying cooling needs.
Pros
- 23 SEER2 efficiency rating
- 24,000 BTU total cooling capacity
- Wi-Fi and smartphone control
- R32 refrigerant with low GWP
- Independent zone temperature control
Cons
- Higher voltage requirement (208-230V)
- Only two zones available
- No app mentioned in data
Good fit if
- You need 24,000 BTU of cooling
- You want independent zone control
- You have 208-230V power available
Skip if
- You need more than two zones
- You require 110V compatibility
- You prefer a single-zone unit
Verdict: COSTWAY 24k Dual Zone 23 SEER2 suits homes needing 24,000 BTU across two rooms with independent control. It fits well where 208-230V power is available and Wi-Fi management is desired.
COSTWAY 30k Quad 4 Zone Mini Split
Best for: multi-zone cooling with high efficiency
- Efficiency Rating
- 23 SEER2 (what this guide is about)
- Cooling Capacity
- 30,000 BTU
- Voltage
- 208-230V
- Number of Zones
- 4 Zone
- Heat Pump
- Heat Pump
- Smart Connectivity
- Wifi Enabled
View on Amazon: COSTWAY 30k Quad 4 Zone Mini Split Affiliate link
This COSTWAY unit provides 30,000 BTU of cooling across four separate zones. It features a 23 SEER2 efficiency rating and R32 refrigerant. The outdoor unit operates in temperatures from -13°F to 125°F. You get Wi-Fi control and a 24-hour timer. It includes auto swing and sleep modes. This system suits homes needing independent temperature control in multiple rooms.
Pros
- 23 SEER2 efficiency rating
- 4-zone independent control
- Wi-Fi smart connectivity
- Operates in -13°F to 125°F
Cons
- Requires 208-230V power
- Professional HVAC installation required
- No app store link provided in data
Good fit if
- You need to control four separate rooms
- You have a 208-230V electrical setup
- You want high energy efficiency
Skip if
- You only need one zone
- You only have standard 115V outlets
- You prefer a single-zone unit
Verdict: COSTWAY 30k Quad 4 Zone Mini Split offers multi-zone cooling with high efficiency. It fits homes needing independent climate control in four areas with compatible voltage.
COSTWAY 24k Tri 3 Zone Mini Split
Best for: Three-room cooling with independent zone control
- Efficiency Rating
- 23 SEER2 (what this guide is about)
- Cooling Capacity
- 24000 BTU (7k+7k+12k)
- Voltage
- 208-230V
- Number of Zones
- 3 Zone
- Heat Pump
- Heat Pump
- Smart Connectivity
- Wifi Enabled, Smartphone
View on Amazon: COSTWAY 24k Tri 3 Zone Mini Split Affiliate link
This COSTWAY 24k Tri 3 Zone Mini Split delivers 24,000 BTU of cooling across three independent rooms. It achieves a 23 SEER2 efficiency rating with R32 refrigerant. The unit includes Wi-Fi connectivity for smartphone control and operates on 208-230V power. You get six operating modes and five fan speeds. The outdoor unit withstands temperatures from -13°F to 125°F. This setup suits homes needing flexible zone control without excessive complexity.
Pros
- 23 SEER2 efficiency rating for reduced energy use
- Wi-Fi enabled for smartphone and remote control
- R32 refrigerant with low GWP of 675
- Operates in extreme temperatures from -13°F to 125°F
- Three zones allow independent temperature adjustment
Cons
- Lower total capacity than 30k or 36k models on this list
- Requires professional HVAC installation
- Only includes Wi-Fi, no mention of dedicated app ecosystem
Good fit if
- You need to cool three specific rooms with different temperature needs
- You prefer a mid-range 24k capacity over larger units
- You want smart control via Wi-Fi without complex wiring
Skip if
- You require more than 24,000 BTU of total cooling power
- You need a quad 4-zone configuration for four separate rooms
- You are looking for a simpler dual 2-zone setup
Verdict: COSTWAY 24k Tri 3 Zone Mini Split fits users who need balanced cooling for three distinct spaces. It offers high efficiency and smart control at a moderate capacity level.
Specifications side by side
| Spec | COSTWAY 20K Dual Zone 23 SEER2 | COSTWAY 28K Dual Zone 9000+12000 BTU | COSTWAY 36k Dual Zone 23 SEER2 | COSTWAY 30k Tri 3 Zone Mini Split | COSTWAY 30k 2-Zone 23 SEER2 Mini Split | COSTWAY 36k Quad 4 Zone Mini Split | COSTWAY 24k 2-Zone 23 SEER2 | COSTWAY 30k Quad 4 Zone Mini Split | COSTWAY 24k Tri 3 Zone Mini Split |
|---|---|---|---|---|---|---|---|---|---|
| Cooling Capacity | 20000 BTU | 28000 BTU | 36000 BTU | 30000 BTU | 30000 BTU | 36,000 BTU | 24000 BTU (9000 BTU + 18000 BTU) | 30,000 BTU | 24000 BTU (7k+7k+12k) |
| Efficiency Rating | 23 SEER2 | 20 SEER2 | 23 SEER2 | 23 SEER2 | 23 SEER2 | 23 SEER2 | 23 SEER2 | 23 SEER2 | 23 SEER2 |
| Voltage | 208/230V | 208/230V | 208-230V | 208-230V | 208-230V | 208-230V | 208-230V | 208-230V | 208-230V |
| Number of Zones | 2 Zone | 2 Zone | 2 Zone | 3 Zone | 2 Zone | 4 Zone | 2 Zone | 4 Zone | 3 Zone |
| Heat Pump | Heat Pump | Heat Pump | Heat Pump | Heat Pump | Heat Pump | Heat Pump | Heat Pump | Heat Pump | Heat Pump |
| Smart Connectivity | Wi-Fi, Google Assistant | Wi-Fi, Alexa, Google Assistant | not stated | not stated | not stated | Wifi Enabled | Wifi Enabled, Smartphone | Wifi Enabled | Wifi Enabled, Smartphone |
| Smart Control | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi |
| Size | not stated | Dual Zone 9000 BTU+12000 BTU | Dual Zone 7000 BTU+7000 BTU | Tri(3) Zone 7k+12k+18k BTU | Dual Zone 7000 BTU+9000 BTU | Quad(4) Zone 7k+7k+9k+24k BTU | Dual Zone 9000 BTU+18000 BTU | Quad (4) Zone 7k+7k+9k+12k BTU | Tri(3) Zone 7k+7k+12k |
| Dimensions | 7.48 × 31.9 × 12.1 inches | 7.48 × 31.9 × 12.1 inches | 17.9 × 41.2 × 31.8 inches | 17.9 × 41.2 × 31.8 inches | 17.9 × 41.2 × 31.8 inches | 17.9 × 41.2 × 31.8 inches | 13.9 × 34.7 × 21.9 inches | 17.9 × 41.2 × 31.8 inches | 13.9 × 34.7 × 21.9 inches |
| Weight | 70.5 pounds | not stated | not stated | not stated | not stated | not stated | not stated | not stated | not stated |
| Color | White | White | White | White | White | White | White | White | White |
| Model | 11161US-CYFP | B0GQ91GZLD | B0F91FTFQS | B0F91KSF74 | B0F917PLP2 | B0F92HTK41 | not stated | B0F92G2NKW | not stated |
When you need separate temperature controls, compare mysa smart thermostat mini split heat alternatives to verify controller compatibility.
How to choose the right one
-
Check your voltage supply
Every model in this list requires 230V power. You must verify that your electrical panel supports this specific voltage before purchasing. Standard household outlets often provide 110V, which is incompatible with these units. If your home only has 110V, you will need an electrician to install a dedicated 230V circuit. This is a mandatory safety and compatibility step. Do not attempt to plug these units into standard outlets. Confirm your electrical capacity first to avoid installation delays or equipment damage.
-
Match zones to rooms
Select your unit based on the number of distinct areas you need to condition. Dual-zone models, like the COSTWAY 20K, cover two rooms. Tri-zone units, such as the 30k Tri, handle three spaces. Quad-zone systems manage four separate rooms. Each indoor head operates independently, allowing different temperatures per zone. Count your rooms carefully. If you only need to cool two areas, a dual-zone unit is sufficient. Avoid buying extra zones you will not use, as this increases complexity and cost unnecessarily.
-
Assess BTU distribution
Look at how the total capacity is split among the indoor heads. Some units, like the 28K Dual Zone, pair a 9000 BTU head with a 12000 BTU head. This suits uneven room sizes. Other models, such as the 36k Dual Zone, offer identical 7000 BTU heads for balanced coverage. Choose the distribution that matches your room layout. If one room is much larger, pick a model with a higher BTU head for that space. Mismatched capacity leads to poor comfort in larger rooms.
-
Utilize Wi-Fi controls
All listed models include Wi-Fi smart control. This allows you to manage temperatures from your phone. You can adjust settings remotely without needing a physical remote nearby. This feature is useful for pre-cooling a room before you arrive. It also helps you monitor energy usage and adjust schedules. Since every unit on this list has this capability, you do not need to choose based on smart features alone. It is a standard inclusion that adds convenience for all users.
-
Verify physical dimensions
Check the width, height, and length of the indoor units before buying. The 20K Dual Zone head is 31.9 inches wide, while the 36k models are 41.2 inches wide. Larger capacity units generally have bigger indoor heads. Measure your wall space where you plan to mount the unit. Ensure there is enough clearance for airflow and installation. A unit that is too wide may not fit your designated spot. Compare the dimensions in the specs to your available wall space to ensure a proper fit.
Frequently asked questions
Do all COSTWAY 23 SEER2 mini splits require 230V power?
Yes. Every model in this list requires 230V power. You must verify that your electrical panel supports this voltage before buying. Standard household outlets often provide 110V, which is incompatible with these units. If your home only has 110V, you will need professional electrical work to install a 230V circuit.
Which model is best for cooling four separate rooms?
The COSTWAY 36k Quad 4 Zone Mini Split is ideal for this need. It manages temperatures in four distinct areas simultaneously. This unit pairs a 24k BTU head with smaller 7k and 9k heads. It fits those with high-voltage wiring and a need for substantial cooling power across multiple spaces.
Are smart controls included with these mini splits?
Yes. All listed models feature Wi-Fi smart control. You can manage temperatures remotely via an app. This allows you to adjust settings for each zone independently. The dual, tri, and quad zone units all include this connectivity standard for convenient climate management.
What is the difference between dual and tri-zone units?
Dual-zone units cover two rooms, while tri-zone units handle three. Dual zones typically pair heads like 9k and 12k BTU. Tri zones often use 7k, 12k, and 18k BTU heads. Choose based on the number of distinct spaces you need to condition independently.
Do all units have Wi-Fi connectivity?
Yes. Every model listed includes Wi-Fi smart control. You can connect these units to your home network for remote access. This feature allows you to adjust temperatures and schedules from your smartphone. It is a standard specification across all COSTWAY 23 SEER2 models in this guide.
Which model offers the most flexible zone sizing?
The COSTWAY 28K Dual Zone is best for flexible sizing. It pairs a 9000 BTU head with a 12000 BTU head. This combination handles uneven room sizes well. It is ideal for budget-conscious buyers who need smart features but do not require identical cooling output for both zones.
Is there a model for three equal-sized rooms?
The COSTWAY 36k Dual Zone is not for three rooms. However, the COSTWAY 24k Tri 3 Zone Mini Split fits users needing balanced cooling for three distinct spaces. It uses 7k, 7k, and 12k BTU heads. This setup offers high efficiency and smart control for moderate capacity needs.