Costway's 7 Signature Split AC Series for Large Rooms
A comprehensive breakdown of our specialized cooling and heating lineups designed for spaces up to 1,500 sq. ft.
I'm Adam Smith, an Independent HVAC Specialist. When it comes to cooling large, open-concept spaces, a "one size fits all" approach simply doesn't work. Costway has addressed this by developing seven distinct series of split AC systems, each engineered to solve specific environmental challenges—from extreme sub-zero winters to high-humidity coastal climates. In this guide, I'll break down the unique engineering and value proposition of each series to help you identify the perfect match for your home or office.
Understanding the Costway Series Lineup
Costway's split AC ecosystem is divided into specialized series that prioritize different aspects of home comfort. Whether you need the highest possible energy efficiency (SEER2), the quietest operation for a bedroom, or a design that complements modern furniture, there is a dedicated series built for that purpose. All units featured here are high-capacity systems capable of handling large rooms between 1,000 and 1,500 square feet.
The Seven Series at a Glance
- SEERXtreme Series: The flagship for efficiency and extreme weather.
- Airtural Series: The gold standard for silent, unobtrusive comfort.
- GreyVolt Series: Where premium aesthetics meet high-performance dehumidification.
- Blast Pro Series: Engineered for gentle airflow and massive moisture removal.
- EcoGuard Series: The future-proof choice using eco-friendly R454B refrigerant.
- EchoCool Series: The smart-home entry point offering balanced performance.
- Blast Series: Reliable, high-capacity cooling with traditional controls.
Series Comparison Matrix
| 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) |
Deep Dive: The 7 Signature Series
1. SEERXtreme Series — The Efficiency Flagship
Series Overview
The SEERXtreme Series represents the pinnacle of Costway's engineering. It is designed for users who refuse to compromise on energy savings or performance in extreme climates. With a 25 SEER2 rating, it is one of the most efficient units on the market today.
Best For
- Regions with extreme winters (built-in base pan heater)
- Users looking to maximize long-term utility bill savings
Key Features
- Up to 25 SEER2 / Energy Star Certified
- Heating operational down to -15°F
- 22-52 dB Noise Level
- Up to 22,500 BTU Cooling Capacity
- Advanced WiFi & Voice Integration
Strengths
- Lowest operating costs
- Superior heating in deep freeze
Considerations
- Highest initial investment
Verdict: The definitive choice for high-efficiency climate control in any weather.
2. Airtural Series — The Silent Comfort Specialist
Series Overview
The Airtural Series is engineered for environments where silence is a priority. By optimizing the internal fan blade design and air duct geometry, this series achieves a noise floor of just 23 dB, making it virtually imperceptible during operation.
Best For
- Large master bedrooms and nurseries
- Home offices and recording studios
Key Features
- Ultra-quiet 23 dB indoor operation
- Up to 22 SEER2 High Efficiency
- Up to 22,000 BTU Cooling Capacity
- Heating operational down to 14°F
- Sleek, minimalist chassis design
Strengths
- Unrivaled acoustic performance
- Smooth, consistent temperature delivery
Considerations
- Standard dehumidification rates
Verdict: Best for those who want powerful cooling without the background noise.
3. GreyVolt Series — The Designer's Choice
Series Overview
The GreyVolt Series challenges the traditional "white box" aesthetic of air conditioners. Featuring a premium grey acrylic front panel, it is designed to blend into modern, sophisticated interiors while offering robust dehumidification capabilities.
Best For
- Modern living rooms with dark or neutral color palettes
- Humid environments requiring high moisture removal
Key Features
- Unique Grey Acrylic aesthetic
- 23-38 dB Noise Level
- Up to 22,000 BTU Cooling Capacity
- Up to 22 SEER2 Efficiency
- Heating operational down to 19°F
- 92 Pints/Day Dehumidification
Strengths
- Stunning visual appeal
- Excellent at controlling indoor humidity
Considerations
- Color may not suit traditional white-walled rooms
Verdict: The perfect intersection of high-end design and heavy-duty performance.
4. Blast Pro Series — The Gentle Powerhouse
Series Overview
The Blast Pro Series is all about "Soft Wind" technology. It uses a specialized diffuser to break up harsh air currents, providing a gentle, natural cooling sensation. It also boasts the highest dehumidification capacity in the entire lineup.
Best For
- Users sensitive to direct cold drafts
- Extremely humid basements or coastal homes
Key Features
- Soft Wind airflow technology
- 28 dB Noise Level
- 24,000 BTU High Capacity
- Heating operational down to -4°F
- 131.9 Pints/Day Dehumidification
Strengths
- Most comfortable airflow feel
- Unmatched moisture removal
Considerations
- Slightly lower SEER2 (20) than the flagship
Verdict: Ideal for those who prioritize comfort feel and humidity control.
5. EcoGuard Series — The Sustainable Choice
Series Overview
The EcoGuard Series is built for the environmentally conscious. It utilizes R454B refrigerant, which has a significantly lower Global Warming Potential (GWP) than standard refrigerants, ensuring your home stays cool without a heavy environmental toll.
Best For
- Eco-conscious homeowners
- New builds requiring green-certified appliances
Key Features
- Eco-friendly R454B Refrigerant
- Up to 21 SEER2 Efficiency
- 28 dB Noise Level
- Up to 24,000 BTU Cooling Capacity
- Heating operational down to -4°F
- Full Smart Home Compatibility
Strengths
- Future-proofed against refrigerant regulations
- High efficiency and reliable heating
Considerations
- Requires technicians familiar with R454B
Verdict: The best option for a green home without sacrificing cooling power.
6. EchoCool Series — The Smart Value Entry
Series Overview
The EchoCool Series is designed to provide high-capacity cooling and smart features at a more accessible price point. It offers a balanced performance profile that covers all the essentials for a modern smart home.
Best For
- Budget-conscious buyers needing large room coverage
- Rental properties or secondary residences
Key Features
- 17 SEER2 Efficiency
- 28 dB Noise Level
- Up to 23,000 BTU Cooling Capacity
- Heating operational down to 5°F
- WiFi & Voice Control included
- 122 Pints/Day Dehumidification
Strengths
- Excellent value for money
- Reliable smart home integration
Considerations
- Lower energy efficiency than premium series
Verdict: A solid, dependable workhorse for large-room cooling on a budget.
7. Blast Series — The Reliable Classic
Series Overview
The Blast Series focuses on the core fundamentals of air conditioning: power, reliability, and simplicity. By omitting WiFi connectivity, it offers a rock-solid system that is easy to operate via a traditional remote control.
Best For
- Users who prefer simple, non-smart appliances
- Areas with poor or no internet connectivity
Key Features
- Up to 20 SEER2 Efficiency
- Ultra-Quiet 23 dB Operation
- Up to 23,000 BTU Cooling Capacity
- Heating operational down to 5°F
- Traditional Remote Control focus
Strengths
- Extremely quiet and reliable
- No complex setup or app required
Considerations
- No smartphone or voice control
Verdict: The best choice for straightforward, high-performance cooling.
How to Choose Your Series
- Climate First: If you live in a region with harsh winters, the SEERXtreme is non-negotiable due to its low-temp heating.
- Lifestyle Needs: For bedrooms or quiet offices, the Airtural or Blast series offer the best acoustic experience.
- Environmental Impact: If sustainability is your priority, the EcoGuard series is the clear winner.
- Aesthetic Integration: For modern homes where the AC is a visible part of the decor, the GreyVolt series provides a premium look.
Frequently Asked Questions
Why are there so many different series?
Different environments have different needs. A humid coastal home needs the high dehumidification of the Blast Pro, while a dry, cold northern home needs the heating efficiency of the SEERXtreme. By offering specialized series, Costway ensures you don't pay for features you don't need while getting the ones you do.
Do all series require professional installation?
Yes. To ensure the warranty remains valid and the system operates at peak efficiency, all split AC series should be installed by a licensed HVAC professional. This involves handling refrigerant lines and high-voltage electrical connections.
Conclusion
Costway's 2026 lineup of split AC series offers a tailored solution for every large-room scenario. Whether you prioritize the extreme efficiency of the SEERXtreme, the silence of the Airtural, or the eco-friendliness of the EcoGuard, you are investing in a system designed for longevity and comfort.