Top Split ACs for Stable & Reliable Cooling Performance

What it is / Why it stands out

SEERXtreme is Costway’s highest-efficiency collection in the supplied data, covering 12,000 to 22,500 BTU cooling and 750 to 1,500 square feet. Its combination of SEER2 24–25, Energy Star certification, smart controls, R32 refrigerant, and bottom-pan heating makes it the strongest overall recommendation.

Best for

• Homeowners prioritizing lower operating energy use
• Rooms from approximately 750 to 1,500 square feet
• Cold-weather heat-pump use within the listed operating range

Key characteristics

• 12,000–22,500 BTU cooling
• 12,300–24,000 BTU heating
• SEER2 24–25
• HSPF2 10–10.5
• 22–52 dB indoor noise range
• 60°F–90°F temperature setting
• App and voice control
• Eight-year service term listed

Pros / Why We Love It

• Highest listed SEER2 range among the featured picks
• Energy Star certification is supplied for the series
• Offers both 115V and 208–230V model options
• Designed for cooling and heating in a broad temperature range

Cons

• Electrical requirements differ by model
• Largest units are heavier and may need more installation planning

Media

View SEERXtreme models

For more connected cooling options, compare these WiFi mini-split ACs before deciding.

Verdict

Choose SEERXtreme if efficiency, cold-weather flexibility, and the broadest feature set matter more than selecting the lowest upfront specification.

What it is / Why it stands out

EcoGuard covers 9,000 to 24,000 BTU and uses R454B refrigerant in the supplied specifications. With app and voice control, bottom-pan heating, and SEER2 ratings from 19 to 21, it is a practical choice for buyers who want modern controls and an efficiency-focused refrigerant platform.

Best for

• Eco-conscious homeowners
• Rooms from 400 to 1,200 square feet
• Buyers who want connected controls without choosing the top-priced efficiency tier

Key characteristics

• 9,000–24,000 BTU cooling
• 10,000–24,000 BTU heating
• SEER2 19–21
• HSPF2 9.5–10
• 28 dB indoor noise listed
• R454B refrigerant
• App and voice control
• Five-year service term listed

Pros / Why We Love It

• Uses R454B in the supplied series data
• Includes bottom-pan heating and a 24-hour timer
• Offers both 115V and 208–230V configurations
• Broad range of capacities for smaller and larger rooms

Cons

• Energy Star certification is not identified in the supplied data
• Its maximum SEER2 is below SEERXtreme

Media

If refrigerant type is central to your decision, compare eco-friendly AC options alongside the installation requirements for your location.

Verdict

EcoGuard is the best fit for buyers who want R454B, smart operation, and balanced efficiency in a flexible capacity range.

What it is / Why it stands out

Airtural is the quietest featured family by its supplied series-level specification, with 23 dB indoor noise listed. It spans 9,100 to 22,000 BTU, reaches up to SEER2 22, and includes both R32 refrigerant and heat-pump capability.

Best for

• Bedrooms, nurseries, and home offices
• People sensitive to indoor equipment noise
• Rooms from 450 to 1,500 square feet

Key characteristics

• 9,100–22,000 BTU cooling
• 9,500–23,000 BTU heating
• SEER2 20.5–22
• 23 dB indoor noise listed
• R32 refrigerant
• 115V and 208–230V models
• 35.5–76 pints/day dehumidification
• Eight-year service term listed

Pros / Why We Love It

• Very low listed indoor noise across the collection
• Several Energy Star models are identified
• Includes capacities for compact rooms through larger zones
• Some models include app and voice control

Cons

• Smart features are model-dependent
• Not every supplied model has airflow or weight data

Media

For noise-sensitive rooms, use this quiet mini-split guide to compare sound specifications before purchase.

Verdict

Choose Airtural when quiet indoor operation is your first priority and you are willing to verify smart features model by model.

What it is / Why it stands out

Blast Pro is a connected R32 mini-split family covering 9,000 to 24,000 BTU. Every series-level specification supplied includes app control, voice control, a timer, bottom-pan heating, and a heat pump, giving it a strong feature-to-capacity balance.

Best for

• Smart-home users who want app and voice operation
• Small rooms through 1,200-square-foot zones
• Buyers seeking connected features without the highest SEER2 tier

Key characteristics

• 9,000–24,000 BTU cooling
• 10,000–24,000 BTU heating
• SEER2 20–21
• 28 dB indoor noise listed
• R32 refrigerant
• App and voice control
• 335–847 CFM airflow
• Five-year service term listed

Pros / Why We Love It

• Connected controls are included at the series level
• Wide selection of 115V and 208–230V models
• Heat-pump operation supports cooling and heating
• Strong dehumidification figures on larger models

Cons

• Does not reach SEERXtreme’s 24–25 SEER2 range
• Energy Star certification is not identified in the supplied data

What users say

“Cooling equipment is an absolute must during the hot summer. This Costway mini split works well!” — Customer review of Blast Pro 28000 BTU 3 Zone Mini Split AC

“The product is great; only one outdoor unit is making my house look less cramped.” — Customer review of X-Pro 35000 BTU 4 Zone Mini Split AC

Media

Shoppers comparing value can also review affordable mini-split systems with similar capacity targets.

Verdict

Blast Pro deserves its ranking for buyers who value app and voice control, heat-pump functionality, and a broad model range over maximum efficiency.