I'm Adam Smith, an HVAC technology specialist. Over the last 15 years, I've evaluated hundreds of energy-efficient cooling systems. This year, Costway has refined its offerings into four distinct series, each tailored to specific household needs. Whether you're looking for the smartest tech or the highest energy savings, these systems provide professional-grade performance. My top recommendation for the modern, connected home is the Blast Pro Series for its seamless integration and user-friendly features.
Adam Smith
HVAC Technology & Home Climate Specialist
The Advantage of Split Systems
A ductless mini split system is the gold standard for modern home comfort. By separating the indoor air handler from the outdoor compressor, these units provide whisper-quiet operation and eliminate the energy loss associated with traditional ductwork. Costway's 2026 lineup offers specialized solutions for every environment, from humid coastal regions to freezing northern climates.
The 2026 Signature Lineup
- 1 Blast Pro Series — The leader in smart home connectivity and convenience.
- 2 Airtural Series — The eco-efficiency specialist for maximum utility savings.
- 3 SEERXtreme Series — The high-performance powerhouse for volatile climates.
- 4 GreyVolt Series — The aesthetic expert for modern design and humidity control.
Series Feature Comparison
| Model Name | Cooling Power | Heating Power | Efficiency | Noise Level | Voltage | Smart Control | Heating & Min. Temp. |
|---|---|---|---|---|---|---|---|
| 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) |
| 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) |
| 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) |
| 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) |
Our Professional Evaluation Criteria
- Acoustic Performance — We verify decibel levels to ensure the units maintain a peaceful home environment.
- Cooling Velocity — We measure how quickly each series can stabilize room temperature during peak heat.
- Smart Ecosystems — We test the "Smart Life" app integration with smart air conditioners and voice assistants.
- Hardware Durability — We inspect the anti-corrosive coatings and compressor build quality for long-term reliability.
- Energy Verification — We confirm that SEER2 ratings translate to real-world electricity savings.
Detailed Series Breakdown
1 Blast Pro Series — The Smart Connectivity Leader
Why It's the Top Choice
The Blast Pro Series is designed for the modern user who values convenience. With built-in WiFi and full compatibility with the Smart Life app, you can control your home's climate from anywhere in the world. The "I Feel" remote technology ensures the unit targets the temperature exactly where you are sitting, providing unmatched personalized comfort.
Best Applications
- Tech-integrated modern homes
- Bedrooms and nurseries
- Home offices requiring remote scheduling
Key Specifications
- Capacity: 9,000 - 24,000 BTU
- SEER2 Rating: 20-21
- Smart Life App & Voice Control
- Heating Min. Temp: -4°F
- Noise Level: 28 dB
- Voltage: 115V / 208-230V
- 5-Year Comprehensive Warranty
Pros
- Seamless app integration
- Excellent price-to-feature ratio
- Intuitive "I Feel" remote
Cons
- Standard efficiency (21 SEER2)
- Classic white aesthetic only
Verdict: The ultimate choice for homeowners who prioritize smart features and ease of use.
2 Airtural Series — The Eco-Efficiency Specialist
Why It Stands Out
The Airtural Series is engineered for those who want to minimize their environmental footprint and utility bills. As a premier energy star appliance, it utilizes advanced inverter technology to maintain precise temperatures with minimal energy draw. It is also one of the quietest units on the market, operating at just 23 decibels.
Best Applications
- High-traffic family living areas
- Eco-conscious households
- Regions with high electricity costs
Key Specifications
- Capacity: 9,100 - 22,000 BTU
- SEER2 Efficiency: 20.5-22
- Ultra-Quiet 23 dB Operation
- Heating Min. Temp: 14°F
- Voltage: 115V / 208-230V
- 8-Year Extended Service Warranty
Pros
- Significant energy savings
- Industry-leading warranty
- Whisper-quiet performance
Cons
- Higher upfront investment
- WiFi is optional on base models
Verdict: The best long-term investment for energy-conscious homeowners.
3 SEERXtreme Series — The High-Performance Powerhouse
Why It Stands Out
The SEERXtreme is built for the most demanding environments. With a massive 25 SEER2 rating and the ability to provide reliable heating in temperatures as low as -15°F, it is a true year-round climate solution. Its rugged construction and Gold-Fin anti-corrosive coating ensure it can withstand extreme thermal stress and coastal salt air.
Best Applications
- Northern climates with harsh winters
- Arid desert regions with extreme heat
- Primary heating and cooling sources
Key Specifications
- Capacity: 12,000 - 22,500 BTU
- Industry-Leading 24-25 SEER2
- Heating Min. Temp: -15°F
- Noise Level: 22-52 dB
- Voltage: 115V / 208-230V
- 8-Year Service Warranty
Pros
- Unrivaled efficiency rating
- Exceptional heating in cold
- Built for extreme durability
Cons
- Premium price point
- Larger outdoor footprint
Verdict: The ultimate "no-compromise" system for guaranteed performance in any weather.
4 GreyVolt Series — The Aesthetic & Humidity Expert
Why It Stands Out
The GreyVolt Series is where high-end design meets superior functionality. Featuring a unique grey acrylic finish, it is designed to complement modern interiors. Beyond its looks, it features a powerful dehumidification system capable of removing up to 92 pints of moisture per day, making it perfect for humid climates or basements.
Best Applications
- Modern lofts and designer spaces
- Humid coastal environments
- Finished basements and studios
Key Specifications
- Capacity: 9,100 - 22,000 BTU
- SEER2 Rating: 20.5-22
- Partial WiFi/App/Voice Support
- Heating Min. Temp: 19°F
- Noise Level: 23-38 dB
- 8-Year Service Warranty
Pros
- Stunning modern aesthetic
- Superior moisture control
- Excellent warranty terms
Cons
- Color may not suit all decor
- Acrylic requires careful cleaning
Verdict: The perfect fusion of high-end aesthetics and advanced humidity management.
Which Series Fits Your Home?
Frequently Asked Questions
What are the benefits of a split system over a window AC?
Split systems are significantly more efficient, quieter, and more secure. Because the noisy compressor is located outside, the indoor unit is nearly silent. They also don't require an open window, which improves home security and prevents air leaks.
Why choose a Costway series for your home?
Costway provides high-end HVAC technology—including WiFi control, Energy Star certification, and extended 8-year warranties—at manufacturer-direct prices. By eliminating the middleman, we offer professional-grade performance that is accessible to every homeowner.
How do I choose the right BTU capacity?
BTU needs depend on your room size. Generally, 9,000 BTU covers up to 400 sq. ft, 12,000 BTU covers up to 550 sq. ft, and 18,000 BTU covers up to 1,000 sq. ft. Consider your ceiling height and insulation quality for the most accurate sizing.
Upgrade Your Home Comfort Today
Don't settle for outdated cooling. Whether you choose the smart Blast Pro, the efficient Airtural, the rugged SEERXtreme, or the stylish GreyVolt, you're investing in years of reliable comfort.
Explore All Series