COSTWAY or Upstreman? Mini Splits Compared in 2026
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The COSTWAY vs upstreman mini split comparison highlights two distinct options for home comfort. Both units offer 20 SEER2 efficiency and inverter technology for steady temperatures. They also share smart Wi-Fi control and operate in extreme weather down to -4°F. The main difference lies in capacity and power. The COSTWAY Blast Pro delivers 18,000 BTU on 230V, while the Upstreman provides 12,000 BTU on standard 115V outlets. This affects where you can install each system.
Key differences
| Aspect | COSTWAY Blast Pro 18000 BTU 230V | Upstreman 12000 BTU Silver Mini Split |
|---|---|---|
| Cooling Capacity | 18,000 BTU | 12,000 BTU |
| Voltage | 208/230V | 115V |
| Coverage Area | Up to 1250 sq.ft. | Up to 750 sq.ft. |
| Indoor Unit Color | White | Silver |
| Fan Speeds | 8 speeds | 6 speeds |
Which one should you choose?
Choose COSTWAY Blast Pro 18000 BTU 230V if
- You need to cool a large room up to 1250 sq.ft.
- You have a dedicated 208/230V circuit available for installation.
- You want more granular fan speed adjustments with 8 options.
Choose Upstreman 12000 BTU Silver Mini Split if
- You are cooling a smaller space up to 750 sq.ft.
- You want to plug the unit into a standard 115V household outlet.
- You prefer a silver finish that matches modern industrial decor.
Verdict: Choose the COSTWAY Blast Pro if you need higher cooling power for a larger area and have the required 230V wiring. The Upstreman is the practical choice for smaller rooms where a standard 115V outlet is available and a silver aesthetic is preferred. Both deliver efficient performance, so your decision depends on your space size and electrical setup.
COSTWAY vs Upstreman Mini Split
Voltage and power
The COSTWAY Blast Pro runs on 208/230V power. This higher voltage allows for more efficient energy transfer over longer lines. The Upstreman 12000 BTU model uses standard 115V household current. This makes the Upstreman easier to install in spaces without dedicated high-voltage circuits. If your home has standard outlets, the Upstreman fits right in. If you have a dedicated 230V line, the COSTWAY offers better electrical efficiency. Both units handle extreme temperatures well, but the power source is a key decision factor for your home’s electrical setup.
Coverage area
The COSTWAY Blast Pro covers up to 1250 square feet. This makes it suitable for large open living areas or master suites. The Upstreman covers up to 750 square feet. This size is ideal for smaller bedrooms or home offices. You should match the BTU output to your room size. A larger unit in a small room will short cycle, wasting energy. A smaller unit in a large room will struggle to reach the set temperature. Choose the COSTWAY for big spaces. Pick the Upstreman for compact rooms.
Smart control features
Both units offer Wi-Fi connectivity for remote control via mobile apps. The COSTWAY Blast Pro includes voice control compatibility with Alexa and Google Assistant. This allows you to adjust settings using smart home speakers. The Upstreman works with the Smart Life app for scheduling and remote adjustments. It does not list voice assistant integration in its data. If you rely on voice commands for your home automation, the COSTWAY is the better choice. Both apps allow you to monitor and adjust temperatures from anywhere, ensuring comfort when you arrive home.
Indoor unit size
The physical dimensions of the indoor unit matter for wall space. The COSTWAY Blast Pro is 35.8 inches wide and 12 inches high. The Upstreman is 28.1 inches wide but 26.8 inches high. The COSTWAY is wider but much flatter against the wall. The Upstreman is more compact in width but taller. You need to check your wall space for both width and height clearance. The COSTWAY might fit better under low windows or in tight horizontal spaces. The Upstreman requires more vertical clearance but takes up less horizontal wall width.
Included mounting hardware
Installation requirements vary by brand. The Upstreman includes heavy-duty, waterproof mounting brackets with the unit. These brackets support up to 600 pounds and resist moisture damage. The COSTWAY data does not mention included mounting brackets. You may need to purchase brackets separately for the COSTWAY. This adds a step to the installation process. The Upstreman simplifies the setup by providing the necessary hardware. If you want a complete package with all installation components included, the Upstreman is the more convenient option.
Which Mini Split Fits Your Space
Large room owners needing 230V power
The COSTWAY Blast Pro handles up to 1250 square feet with 18,000 BTU cooling capacity. It requires 208/230V voltage, which supports efficient energy transfer for larger spaces. Its 20 SEER2 rating ensures steady temperatures while minimizing power consumption during peak usage hours.
Standard outlet users with smaller rooms
The Upstreman model operates on standard 115V household current, making it easier to install without specialized wiring. It provides 12,000 BTU of cooling for spaces up to 750 square feet. This unit matches well with typical residential electrical setups for bedrooms or small living areas.
Users wanting included mounting hardware
The Upstreman includes heavy-duty, waterproof mounting brackets that support up to 600 pounds. You do not need to purchase these separately. This feature simplifies the installation process and reduces overall setup time, ensuring a secure mount for your indoor unit right out of the box.
Buyers preferring a white finish
The COSTWAY Blast Pro features a white color scheme, which blends seamlessly with traditional interior decor. If you prefer a classic look over the industrial silver finish of the Upstreman, this unit offers a versatile aesthetic. The white finish complements most wall colors and standard home designs.
The products compared
COSTWAY Blast Pro 18000 BTU 230V
Best for: Large rooms 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
The COSTWAY 18000 BTU Mini Split handles large spaces up to 1250 sq.ft. with a 20 SEER2 rating. It runs on 208/230V power and includes Wi-Fi app control. The unit offers heating down to -4℉ and cooling up to 127℉. You get seven modes and 8D airflow. This model suits those needing high capacity and smart features for bigger rooms.
Pros
- 18,000 BTU capacity for up to 1250 sq.ft.
- 20 SEER2 energy efficiency rating
- Wi-Fi connectivity with app and voice control
- Operates in extreme temperatures from -4℉ to 127℉
- Whisper-quiet indoor unit at 28 dB
Cons
- Requires 208/230V electrical connection, not standard 115V
- Indoor unit is wider at 35.8 inches
- Heavier indoor unit at 20.9 pounds
Good fit if
- You need to cool or heat a large room up to 1250 sq.ft.
- 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 small space under 900 sq.ft.
- You need a compact unit under 30 inches wide
Verdict: COSTWAY 18000 BTU Mini Split delivers high capacity and smart control for large spaces. It is the right pick if you have 208/230V power and need to condition a room up to 1250 sq.ft.
Upstreman 12000 BTU Silver Mini Split
Best for: small rooms needing 115V power and app control
- Cooling Capacity
- 12000 BTU
- Efficiency Rating
- 20 SEER2
- Voltage
- 115V
- Coverage Area
- up to 750 Sq.Ft
- Heat Pump
- Heat Pump
- Smart Connectivity
- WiFi, Smart Life App
View on Amazon: Upstreman 12000 BTU Silver Mini Split Affiliate link
The Upstreman 12000 BTU mini split offers 20 SEER2 efficiency for spaces up to 750 square feet. It operates on 115V power and includes WiFi control via the Smart Life app. The unit features a sleek silver finish and heavy-duty mounting brackets. This system provides both cooling and heating, making it suitable for moderate climates where you need reliable temperature management without complex installation.
Pros
- 20 SEER2 efficiency rating for energy savings
- 115V standard outlet compatibility
- WiFi connectivity with Smart Life app
- Includes heavy-duty waterproof mounting brackets
Cons
- Lower 12000 BTU capacity compared to 18000 BTU competitors
- 115V model may struggle in extreme heat or cold
- No mention of remote control included in data
Good fit if
- You need a 115V unit for easy installation
- You want WiFi app control for scheduling
- You prefer a silver finish over white
Skip if
- You require more than 12000 BTU of cooling power
- You need a 208/230V high-voltage system
- You want a larger coverage area than 750 square feet
Verdict: Upstreman 12000 BTU Silver Mini Split suits renters or small spaces needing 115V convenience and app control, but you should skip it if you require higher capacity or 240V power.
Specifications side by side
| Spec | COSTWAY Blast Pro 18000 BTU 230V | Upstreman 12000 BTU Silver Mini Split |
|---|---|---|
| Cooling Capacity | 18,000 BTU | 12000 BTU |
| Efficiency Rating | 20 SEER2 | 20 SEER2 |
| Voltage | 208/230V | 115V |
| Coverage Area | Up to 1,250 sq ft | up to 750 Sq.Ft |
| Heat Pump | Heat Pump | Heat Pump |
| Smart Connectivity | Wi-Fi, App, Alexa, Google Assistant | WiFi, Smart Life App |
| Smart Control | Wi-Fi, Alexa | Wi-Fi |
| Dimensions | 7.68 × 35.8 × 12 inches | 39.3 × 28.1 × 26.8 inches |
| Weight | 20.9 pounds | 120 pounds |
| Color | White | Silver |
| Model | Blast Pro | UI12 |
| Size | not stated | 12000BTU 115V |
Frequently asked questions
Can I install the Upstreman mini split on a standard outlet?
Yes, the Upstreman 12000 BTU model runs on 115V power. This standard household voltage makes it easier to install in small rooms or rental spaces without needing special electrical work. It is designed for convenience and accessibility for typical home circuits.
What is the maximum room size the COSTWAY unit covers?
The COSTWAY Blast Pro conditions rooms up to 1250 square feet. With 18,000 BTU of cooling capacity, it is built for large spaces. You should choose this unit if you need to cool a big area efficiently using 208/230V power.
Do both mini splits support smart phone control?
Yes, both units feature Wi-Fi smart control. You can manage the COSTWAY Blast Pro and the Upstreman 12000 BTU model via a mobile app. This allows you to adjust settings remotely from anywhere, ensuring convenient operation for both large and small rooms.
How low can these mini splits operate in cold weather?
Both the COSTWAY and Upstreman mini splits operate down to -4°F. This low-temperature performance ensures they provide heating even during extreme winter conditions. You can rely on either unit to maintain comfort when outdoor temperatures drop significantly below freezing.
Which model is more energy efficient?
Both units share a 20 SEER2 efficiency rating. This means they offer identical energy performance for cooling. You will get the same level of efficiency regardless of whether you choose the higher capacity COSTWAY or the smaller Upstreman model for your space.
What voltage does the COSTWAY Blast Pro require?
The COSTWAY Blast Pro requires 208/230V power. This higher voltage supports efficient energy transfer for larger spaces up to 1250 square feet. You must have the appropriate electrical setup to install this unit, as it does not run on standard 115V outlets.
Is the Upstreman unit suitable for large living areas?
No, the Upstreman 12000 BTU model is best for small rooms. It covers up to 750 square feet and runs on 115V power. If you need to cool a larger space, you should skip this model and choose the higher capacity COSTWAY option instead.