Costway Mini Split AC: The 7 Core Series
From the ultra-efficient SEERXtreme to the budget-friendly Blast, discover the perfect ductless solution for your home's unique needs.
I'm Adam Smith, an Independent HVAC Specialist. Costway has expanded its lineup to seven distinct product series—Blast, Blast Pro, EcoGuard, Airtural, GreyVolt, SEERXtreme, and EchoCool. Each is engineered to solve specific climate control challenges, from extreme sub-zero heating to high-design aesthetics. In this guide, I break down the technical specifications and real-world performance of each lineup to help you choose the system that fits your lifestyle and budget.
Adam Smith
Independent HVAC & Home Appliance Review Specialist
Expert analysis of residential heating and cooling solutions with a focus on efficiency and value.
The Seven Core Series at a Glance
Technical Series Comparison
| Model Name | Cooling Power | Heating Power | Efficiency | Noise Level | Voltage | Smart Control | Heating & Min. Temp. |
|---|---|---|---|---|---|---|---|
| Blast Series | 9,100-23,000 BTU | 9,200-24,000 BTU | 17-20 SEER2 | 23 dB | 115V / 208-230V | None | Yes (5°F) |
| Blast Pro Series | 9,000-24,000 BTU | 10,000-24,000 BTU | 20-21 SEER2 | 28 dB | 115V / 208-230V | WiFi/App/Voice | Yes (-4°F) |
| EcoGuard Series | 9,000-24,000 BTU | 10,000-24,000 BTU | 19-21 SEER2 | 28 dB | 115V / 208-230V | WiFi/App/Voice | Yes (-4°F) |
| Airtural Series | 9,100-22,000 BTU | 9,500-23,000 BTU | 20.5-22 SEER2 | 23 dB | 115V / 208-230V | Partial WiFi/App/Voice | Yes (14°F) |
| GreyVolt Series | 9,100-22,000 BTU | 9,500-23,000 BTU | 20.5-22 SEER2 | 23-38 dB | 115V / 208-230V | Partial WiFi/App/Voice | Yes (19°F) |
| SEERXtreme Series | 12,000-22,500 BTU | 12,300-24,000 BTU | 24-25 SEER2 | 22-52 dB | 115V / 208-230V | WiFi/App/Voice | Yes (-15°F) |
| EchoCool Series | 11,500-23,000 BTU | 11,500-22,400 BTU | 17 SEER2 | 28 dB | 115V / 208-230V | WiFi/App/Voice | Yes (5°F) |
Detailed Series Breakdown
A deep dive into the engineering, aesthetics, and specialized features that define each Costway product line.
SEERXtreme Series: The Efficiency King
Engineered for the most demanding environments, the SEERXtreme is Costway's flagship for energy conservation and extreme weather resilience. Utilizing Hyper-Heat Technology, it maintains full heating capacity even when outside temperatures plummet to -15°F. It's the ideal choice for northern climates where traditional heat pumps often fail.
Ultra Efficiency
Up to 40% energy savings compared to standard 14 SEER units.
Gold Fin Coating
Anti-corrosive protection for long-term durability in coastal areas.
Best For
Extreme Cold & Maximum Savings
Airtural Series
WHISPER QUIETThe Airtural series focuses on "Natural Air" comfort. It features a specialized 4-Way Swing system that mimics natural breezes, preventing direct cold blasts. At just 23dB, it is virtually silent, making it the premier choice for master bedrooms and nurseries.
- 22 SEER2 High-Efficiency Rating
- Independent Dehumidification Mode
- Partial Smart App Integration
Ideal Application
Bedrooms, Home Offices, Quiet Zones
GreyVolt Series
DESIGNER CHOICEWhere performance meets high-end aesthetics. The GreyVolt features a unique Grey Acrylic Mirror Finish that complements modern, industrial, or minimalist interiors. It hides the LED display when off, maintaining a sleek, uninterrupted look on your wall.
- Premium Acrylic Front Panel
- Hidden "Ghost" LED Display
- 22 SEER2 Performance Efficiency
Ideal Application
Modern Renovations, Luxury Living Rooms
Blast Pro Series
SMART WORKHORSEThe Blast Pro is the ultimate mid-range workhorse. It introduces the I-FEEL Remote Sensing technology, which uses a sensor in the remote to ensure the temperature is perfect exactly where you are sitting, not just near the wall unit.
- Full WiFi & Voice Control (Alexa/Google)
- Self-Cleaning & Anti-Mildew Function
- Reliable Heating down to -4°F
Ideal Application
Whole-Home Comfort, Tech-Savvy Users
Blast Series
VALUE CHAMPIONThe original Blast series focuses on the fundamentals: powerful cooling, quiet operation, and extreme reliability at an entry-level price point. It features a High-Density Filter system that is easy to remove and wash, ensuring clean air without expensive replacements.
- Simplified Remote Control Operation
- Compact Outdoor Unit Footprint
- 17-20 SEER2 Efficiency Range
Ideal Application
Rental Properties, Guest Houses, Budget Projects
EcoGuard Series
ECO-FRIENDLYDesigned for the environmentally conscious, the EcoGuard series utilizes R32 Refrigerant, which has a significantly lower Global Warming Potential (GWP) than older gases. It features advanced smart energy monitoring via the app to help you track and reduce consumption.
- Smart Energy Management via App
- Multi-Stage Air Filtration System
- Up to 21 SEER2 Efficiency
Ideal Application
Eco-Conscious Households, Smart Homes
EchoCool Series
MODERN ESSENTIALThe EchoCool series is built for modern living. It features a Turbo Cooling Mode that can drop room temperatures significantly in just minutes. With full Smart Life app integration, you can pre-cool your home from your phone before you even leave the office.
- Fast-Action Turbo Cooling & Heating
- Auto-Restart after Power Outages
- 24-Hour Programmable Timer
Ideal Application
Apartments, Condos, Standard Residential
Frequently Asked Questions
Which series is best for extremely cold winters?
The SEERXtreme Series is the top choice, maintaining heating performance down to -15°F. The Blast Pro and EcoGuard series are also excellent options, rated down to -4°F.
Do all series support WiFi and Voice control?
Most series (SEERXtreme, Blast Pro, EcoGuard, EchoCool) offer full WiFi/App/Voice control. The Airtural and GreyVolt series offer partial smart support, while the standard Blast series is remote-controlled only.