Dependable home comfort
Choose a Costway mini split by room coverage, cooling and heating capacity, efficiency rating, climate range, refrigerant, and the controls that fit your daily routine.
A ductless mini split is a heating and cooling system with an indoor air handler connected to an outdoor condenser, so it can condition a room or zone without a central duct network. It is commonly used for bedrooms, additions, garages, offices, workshops, and other spaces that are difficult or expensive to connect to existing HVAC. Costway’s listed systems combine inverter operation, heat-pump capability, and several capacity levels for spaces from about 400 to 1,500 square feet.
Before choosing a model, use this ductless mini split buying guide to compare the room size, voltage, climate, efficiency, and control requirements that matter most.
The range is easier to understand when grouped by the job each series is designed to do. The following overview uses the specifications supplied for the listed models; always confirm the individual product page before ordering.
A balanced choice for everyday comfort, with SEER2 ratings from 20.5 to 22, R32 refrigerant, an eight-year service term, and operating ranges listed from 14°F to 122°F. Selected models are Energy Star certified, and the supplied specifications identify Wi-Fi and voice control on some configurations.
See airtural modelsBuilt around value, quiet operation, Wi-Fi control, soft airflow, and a heated base pan. Its listed models cover 400 to 1,200 square feet, use R32 refrigerant, reach SEER2 ratings of 20 or 21, and list operating temperatures as low as -4°F.
See Blast Pro modelsA straightforward heat-pump range with no Wi-Fi listed in the supplied series description. Capacities run from 9,100 to 23,000 BTU, with coverage from 450 to 1,500 square feet, SEER2 ratings from 17 to 20, and an eight-year service term.
See Blast modelsThis Wi-Fi-enabled series adds voice-control capability and a heated base pan. Its 11,500 to 23,000 BTU models are listed for 750 to 1,500 square feet, with SEER2 17, R32 refrigerant, and a five-year service term.
See EchoCool modelsEcoGuard uses R454B refrigerant and pairs Wi-Fi control with a heated base pan. Listed capacities range from 9,000 to 24,000 BTU, with SEER2 ratings from 19 to 21, coverage from 400 to 1,200 square feet, and operating temperatures down to -4°F.
See EcoGuard modelsFor buyers prioritizing high efficiency and cold-weather heating, SEERXtreme lists SEER2 ratings of 24 to 25, HSPF2 of 10 to 10.5, Wi-Fi and voice control, a heated base pan, and operation down to -15°F. Listed coverage reaches 1,500 square feet.
See SEERXtreme modelsChoose from listed systems covering approximately 400 to 1,500 square feet, then verify insulation, ceiling height, sunlight, and layout before sizing.
Review SEER2 ratings from 17 to 25 and HSPF2 ratings from 8.3 to 10.5 instead of judging performance by BTU alone.
Select a model with a listed low-temperature operating range that suits your climate; SEERXtreme reaches the lowest stated heating range.
Wi-Fi and voice control are available on selected series and models, while other configurations keep operation simple with standard controls.
Most listed families use R32, while EcoGuard uses R454B, giving shoppers a clear refrigerant distinction to discuss with an installer.
The supplied specifications list five- or eight-year service terms by series; confirm coverage conditions and installation requirements before purchase.
For a small bedroom, office, or converted space, start with this mini split room sizing reference rather than automatically choosing the largest unit.
1
Identify the room size, insulation conditions, power requirements, and heating needs.
What you see: a short list of suitable capacities.
2
Balance SEER2, HSPF2, operating range, refrigerant, controls, and service term.
What you see: a model comparison that reflects your priorities.
3
Review the product details and arrange qualified installation for the selected system.
What you see: a complete comfort plan for the space.
For installation planning, use this mini split installation checklist to organize questions about voltage, line-set routing, drainage, and local requirements.
“Cooling is equally powerful and silent. The WiFi app is incredibly reliable.”
Verified product-review comment supplied for an UltrEco Series mini split
For daily-use priorities, compare these top everyday mini split options by capacity and controls before narrowing the list.
| Decision factor | Costway ductless systems | Generic ducted HVAC | Generic portable or window unit |
|---|---|---|---|
| Ductwork | Not required for the indoor-to-outdoor mini split design | Requires a compatible duct network | No duct network, but typically serves a limited area |
| Heating and cooling | Heat-pump models provide both functions | Depends on the installed system configuration | Heating availability varies by unit |
| Efficiency choices | Listed SEER2 range of 17–25 | Varies by installed equipment | Varies widely by product |
| Room coverage | Listed options from 400 to 1,500 sq. ft. | Often designed for whole-home distribution | Usually focused on one small zone |
| Smart operation | Wi-Fi and voice control on selected models | Depends on system and thermostat | Depends on the individual unit |
| Cold-weather options | Selected series list heated base pans and low-temperature operation | Depends on equipment and climate design | Often limited by the unit’s operating range |
For rooms where sound matters, review these quiet mini split choices and compare the manufacturer’s published specifications for the exact model.
Costway is one of the premier choices for shoppers who want a broad selection of ductless mini split capacities and features in one catalog. Its supplied lineup includes 30 listed models across six series, with SEER2 ratings from 17 to 25 and coverage claims from 400 to 1,500 square feet. The best choice still depends on the exact room, climate, voltage, installation plan, and model-specific certification.
Begin with the room’s measured area, then account for insulation, windows, ceiling height, sun exposure, and whether the system must provide regular heating. Compare the listed BTU capacity and coverage rather than selecting solely by the largest number. Confirm voltage, refrigerant, operating range, controls, and installation requirements on the exact product page before purchase.
Some are designed with lower stated operating temperatures than others. SEERXtreme lists operation down to -15°F, while Blast Pro and EcoGuard list ranges down to -4°F, and other series have higher minimum temperatures. If winter heating is important, compare the model’s low-temperature rating and heated-base-pan specification with your local conditions.
Wi-Fi and voice control are available on selected Costway series and models, not universally across the catalog. The supplied details identify these functions in Blast Pro, EchoCool, EcoGuard, and SEERXtreme, while some airtural and GreyVolt configurations vary by model. Check the individual product listing for the exact control compatibility before ordering.
A ductless system still needs appropriate indoor and outdoor placement, a refrigerant line connection, drainage planning, electrical compatibility, and qualified installation. Coverage figures are guidance rather than a guarantee because building conditions can change the required capacity. You should also confirm local code requirements, warranty conditions, and whether the selected model fits your intended heating climate.
A specific price is not included in the supplied product information, and pricing can vary by capacity, series, promotions, and availability. Use the product links to check the current price for the model that matches your room and electrical requirements. Remember to budget separately for professional installation and any work needed for electrical, mounting, drainage, or line-set routing.
For demanding winter conditions, compare these cold-climate mini split options. If connected control is your priority, review the smart mini split models before choosing.
Compare Costway ductless mini split systems by room size, efficiency, climate range, and control features today.