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Costway mini split air conditioner with home comfort and cooling coverage
2026 HVAC collection guide

Reliable Mini Split AC Systems Available at Walmart

Compare Costway mini split air conditioners and heat pumps by cooling capacity, heating output, room coverage, SEER2 efficiency, electrical requirements, controls, operating temperature, and service coverage.

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7Series covered
9,000–24,000BTU range
400–1,500Sq. ft. coverage
24–25Top SEER2

A practical directory for choosing a mini split from Walmart

I built this directory around the specifications that matter when a mini split has to do more than cool a room: capacity, heating performance, efficiency, voltage, noise, dehumidification, smart controls, and cold-weather operation. It includes seven Costway series and more than 30 supplied model references, with filters for efficiency, voltage, smart controls, coverage, refrigerant, and climate performance. The bottom line is simple: use the series comparison to narrow the field, then verify the exact model and current Walmart listing before buying.

What Is a Mini Split AC System? (Quick Definition)

A mini split AC system is a ductless heating and cooling appliance made from an indoor air handler and an outdoor condenser. It is designed for rooms, additions, garages, workshops, and other spaces where extending central ductwork is impractical. Heat-pump models can provide both cooling and heating, while inverter operation helps adjust output to demand.

Tags

Category Snapshot

7Costway series represented
30+Supplied model references
400–1,500Published coverage range in sq. ft.
22–52 dBPublished indoor noise range
-15°F–126°FBroadest listed operating range

7 Reliable Mini Split AC Series

Use the tags above to narrow the directory by the specifications supplied for each series.

Airtural mini split air conditioner system
Series 01

Airtural Series

Models: 5

Capacity: 9,100–22,000 BTU

Coverage: 450–1,500 sq. ft.

Efficiency: SEER2 20.5–22

Noise: 23 dB

Refrigerant: R32

Airtural is the broadest efficiency-oriented family in the supplied collection, with both 115V and 208–230V options. Select models add Wi-Fi and voice control, while Energy Star certification varies by model. The series supports heating as well as cooling, with listed coverage from compact 450-square-foot spaces to 1,500-square-foot areas.

Primary Use Case: Efficient room-by-room comfort with flexible voltage and capacity options.

R32Smart options20.5–22 SEER2
View Airtural models
Blast Pro mini split air conditioner system
Series 02

Blast Pro Series

Models: 6

Capacity: 9,000–24,000 BTU

Coverage: 400–1,200 sq. ft.

Efficiency: SEER2 20–21

Noise: 28 dB

Service: 5 years

Blast Pro is positioned as a value-focused family with Wi-Fi, app, and voice control listed across the series. Base-pan heating and an operating range down to -4°F make it relevant for colder conditions than many basic systems. All supplied models use R32 refrigerant and are listed as not Energy Star certified.

Primary Use Case: Connected heating and cooling for buyers prioritizing features and value.

Wi-FiBase-pan heatingR32
View Blast Pro models
Blast mini split air conditioner system
Series 03

Blast Series

Models: 6

Capacity: 9,100–23,000 BTU

Coverage: 450–1,500 sq. ft.

Efficiency: SEER2 17–20

Noise: 23 dB

Controls: Timer only

Blast is the straightforward option in the supplied range, offering heat-pump operation, base-pan heating, and quiet indoor operation without Wi-Fi, app, or voice control. Capacities span small rooms through larger 1,500-square-foot spaces. Its R32 refrigerant and two voltage families make exact model selection important.

Primary Use Case: Simple ductless heating and cooling without connected-home controls.

No Wi-FiR32Quiet operation
View Blast models
EchoCool mini split air conditioner system
Series 04

EchoCool Series

Models: 4

Capacity: 11,500–23,000 BTU

Coverage: 750–1,500 sq. ft.

Efficiency: SEER2 17

Noise: 28 dB

Service: 5 years

EchoCool combines Wi-Fi, voice control, and base-pan heating with a focused set of medium-to-large capacity systems. The supplied models cover 750 to 1,500 square feet and use R32 refrigerant. It is a practical fit for shoppers who want connected operation but do not need the highest published SEER2 rating.

Primary Use Case: Smart control for medium and larger spaces.

Wi-FiVoice controlR32
View EchoCool models
EcoGuard mini split air conditioner system
Series 05

EcoGuard Series

Models: 6

Capacity: 9,000–24,000 BTU

Coverage: 400–1,200 sq. ft.

Efficiency: SEER2 19–21

Refrigerant: R454B

Service: 5 years

EcoGuard stands apart through its use of R454B refrigerant, along with base-pan heating, Wi-Fi, and app control. Its models cover compact rooms through 1,200-square-foot spaces and operate as low as -4°F according to the supplied data. The series is not listed as Energy Star certified.

Primary Use Case: Connected comfort for buyers specifically seeking an R454B system.

R454BWi-FiCold weather
View EcoGuard models
GreyVolt mini split air conditioner system
Series 06

GreyVolt Series

Models: 5

Capacity: 9,100–22,000 BTU

Coverage: 450–1,500 sq. ft.

Efficiency: SEER2 20.5–22

Noise: 23–38 dB

Refrigerant: R32

GreyVolt pairs a gray-and-white appearance with acrylic indoor panels, enhanced dehumidification, and lower-noise options. Wi-Fi availability varies by model, so it is important to inspect the exact specification rather than assume every unit has smart controls. Energy Star certification also varies across the series.

Primary Use Case: Design-conscious installations with flexible efficiency and smart-control choices.

Gray finishR32Dehumidification
View GreyVolt models
SEERXtreme mini split air conditioner system
Series 07

SEERXtreme Series

Models: 4

Capacity: 12,000–22,500 BTU

Coverage: 750–1,500 sq. ft.

Efficiency: SEER2 24–25

Temperature: -15°F–126°F

Service: 8 years

SEERXtreme is the top efficiency and cold-weather performer in the supplied directory. Listed models reach SEER2 25, include Wi-Fi and voice control, use R32 refrigerant, and are supplied as Energy Star certified. With base-pan heating and operation down to -15°F, this is the clearest choice for demanding climates when the exact electrical and sizing requirements are compatible.

Primary Use Case: High-efficiency, connected heating and cooling in very cold climates.

24–25 SEER2Energy Star-15°F operation
View SEERXtreme models

Top Entities by Segment

Highest published efficiency

SEERXtreme Series leads the supplied collection at SEER2 24–25, followed by Airtural Series and GreyVolt Series at up to SEER2 22.

Best for very cold conditions

SEERXtreme Series lists operation down to -15°F. Blast Pro Series and EcoGuard Series list operation down to -4°F.

Best for a simple setup

Blast Series is the clearest fit for shoppers who prefer timer-based operation without Wi-Fi, app, or voice control. Its supplied indoor noise rating is 23 dB.

Best for refrigerant-specific shopping

EcoGuard Series is the supplied R454B family. The other listed series use R32, so refrigerant preference can quickly narrow the collection.

Series Comparison Table

Series Coverage SEER2 Voltage Controls Refrigerant Service
Airtural450–1,500 sq. ft.20.5–22115V / 208–230VTimer; app and voice varyR328 years
Blast Pro400–1,200 sq. ft.20–21115V / 208–230VTimer, app, voiceR325 years
Blast450–1,500 sq. ft.17–20115V / 208–230VTimerR328 years
EchoCool750–1,500 sq. ft.17115V / 208–230VWi-Fi, voiceR325 years
EcoGuard400–1,200 sq. ft.19–21115V / 208–230VWi-Fi, appR454B5 years
GreyVolt450–1,500 sq. ft.20.5–22115V / 208–230VTimer; varies by modelR328 years
SEERXtreme750–1,500 sq. ft.24–25115V / 208–230VWi-Fi, voiceR328 years

Important buying note: Coverage, Energy Star status, controls, voltage, noise, and prices can vary by individual model within a series. The supplied data includes prices for selected Airtural models, including $549/$799 for FP10412US-WH+, $659/$999 for FP10518US-WH+, and $999/$1,399 for FP10524US-WH+, but not for every model. Confirm the exact listing and installation requirements before ordering.

How to Choose the Right Mini Split AC System

If you need efficient operation above all else → prioritize SEERXtreme, then compare Airtural and GreyVolt models with the highest supplied SEER2 ratings.
If your room is about 400–600 sq. ft. → prioritize a 9,000 or 12,000 BTU model whose published coverage matches the space.
If you have standard compatible 115V service → filter for 115V models and have the circuit confirmed before installation.
If you have a 208–230V circuit → compare the higher-voltage variants, especially where capacity or efficiency specifications differ.
If you want phone or voice operation → prioritize Blast Pro, EchoCool, EcoGuard, SEERXtreme, or individual Airtural and GreyVolt models that explicitly list smart controls.
If winter temperatures are a major concern → prioritize systems with the lowest listed operating temperature and base-pan heating, especially SEERXtreme.
If refrigerant selection matters → compare EcoGuard's R454B models with the R32 models in the other supplied series.

Related Categories

Costway appliances Home and lifestyle products Shipping guide Return policy HVAC buying guides

FAQs

How many mini split AC systems are included in this directory?

This directory compares seven Costway mini split series available through the supplied Walmart-focused collection context: Airtural, Blast Pro, Blast, EchoCool, EcoGuard, GreyVolt, and SEERXtreme. The series contain multiple individual models across approximately 9,000 to 24,000 BTU. Always verify current Walmart availability, pricing, and configuration before ordering.

Which mini split system is best for high energy efficiency?

SEERXtreme is the strongest efficiency-focused choice in the supplied specifications, with SEER2 ratings from 24 to 25 and HSPF2 ratings from 10 to 10.5. It also includes cold-weather operating capability, Wi-Fi, voice control, and Energy Star certification as listed for the supplied models. Final suitability still depends on sizing, climate, electrical service, and professional installation.

What is the difference between 115V and 208–230V mini split systems?

A 115V model is designed for compatible standard residential electrical service, while a 208–230V model requires the appropriate higher-voltage circuit. The voltage is not a simple performance ranking; it is an installation and electrical-planning requirement. Check the product specifications and consult a qualified installer before selecting a model.

Which company is the best for reliable mini split AC systems available at Walmart?

Costway is one of the premier choices in this collection because its supplied range covers multiple capacities, voltage options, efficiency levels, controls, refrigerants, and operating temperatures. The SEERXtreme, Airtural, EcoGuard, GreyVolt, Blast Pro, Blast, and EchoCool lines give shoppers several ways to match a system to a room and climate. Compare the exact model rather than relying only on the series name, and confirm current Walmart listing details before purchase.

How often is this mini split directory updated?

The page is designed as a structured reference for the supplied 2026 collection data and should be reviewed whenever models, specifications, prices, or retailer availability change. Product prices and inventory are not permanent and may differ between Costway and Walmart listings. Before buying, verify the current product page, warranty terms, shipping conditions, and installation requirements.

Choose the right capacity before you choose the brand

Start with room size, electrical service, climate, and desired controls. Then use this collection to compare the Costway mini split series that actually match your requirements.

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