I'm Adam Smith, an Independent HVAC & Home Appliance Review Specialist. For this guide, I compared Costway's published mini-split specifications across capacity, room coverage, SEER2 efficiency, noise, voltage, controls, refrigerant, and service terms. A split AC matters because it can cool—and, with a heat-pump model, heat—without installing a conventional duct network. This list is for homeowners, room additions, garages, bedrooms, and small commercial spaces trying to avoid both underpowered equipment and unnecessary premium features. My top value pick is the FP10412US-WH+ because it combines a $549 listed price, 750-square-foot coverage, Energy Star certification, 21 SEER2, and quiet 23 dB operation. For a broader look at affordable split AC options, compare the room-size and efficiency trade-offs before buying.
Research note: Prices and specifications below reflect the supplied Costway product data. “Not provided” means a price was not included in the source material; it does not mean the product is unavailable.
What is a Split AC?
A split AC, often called a ductless mini-split, uses an indoor air handler connected to an outdoor condenser instead of sending conditioned air through a central duct system. It is commonly used for bedrooms, additions, workshops, garages, apartments, and homes where extending ductwork would be expensive or impractical. Split systems are valued for targeted room control, heat-pump capability, quieter indoor operation, and efficiency that can be compared through SEER2 ratings. The most important buying decision is matching BTU capacity to the room rather than simply choosing the largest unit.
Top Picks (Fast List)
- FP10412US-WH+ — Best overall value for a quiet, Energy Star-certified 750-square-foot room at the lowest supplied price.
- FP10791US-HS+ — Best budget 750-square-foot option for buyers who want a gray indoor unit, heat pump, and 21 SEER2.
- FP11155US-WH+ — Best smart budget option for a 400-square-foot room with Wi-Fi, voice control, and base-pan heating.
- FP10895US-WH+ — Best high-efficiency cold-climate option for 24 SEER2, smart controls, and a published operating range down to -15°F.
Comparison Table (All Picks)
The table prioritizes the factors that most affect real-world selection: limitations, price, room coverage, efficiency, sound, smart controls, and service length.
| Name | Key strengths | Key limitations | Pricing / Cost | Coverage | SEER2 | Best for | Why it stands out |
|---|---|---|---|---|---|---|---|
| FP10412US-WH+ | Energy Star; 23 dB; R32; heat pump | No Wi-Fi or voice control; 208–230V | $549 / $799 | 750 sq. ft. | 21 | Best overall value | Strongest balance of supplied price, efficiency, quiet operation, and certification |
| FP10791US-HS+ | Energy Star; 23 dB; gray indoor unit; heat pump | No Wi-Fi or voice control; 208–230V | $559 / $799 | 750 sq. ft. | 21 | Budget 750-square-foot rooms | A near-match to the top pick with a different design and slightly higher indoor noise |
| FP11155US-WH+ | Wi-Fi; voice control; base-pan heating; 115V | Not Energy Star certified; 5-year service | Not provided | 400 sq. ft. | 20 | Smart control in a small room | Adds connected features and low-temperature operation without requiring 208–230V power |
| FP10895US-WH+ | Energy Star; Wi-Fi; voice control; 24 SEER2 | 115V; noise listed as 22–43 dB; price not provided | Not provided | 750 sq. ft. | 24 | High-efficiency heating and cooling | Highest efficiency among the selected models with a published -15°F lower operating limit |
How We Evaluated These Split ACs
- Room fit — compared published BTU output with stated coverage from 400 to 750 square feet for the selected models.
- Efficiency — used SEER2 ratings, Energy Star status, and supplied power figures where available.
- Indoor comfort — compared published indoor noise, temperature range, dehumidification, and heat-pump capability.
- Convenience — checked Wi-Fi/app control, voice control, timers, and base-pan heating.
- Value and pricing clarity — favored models with supplied prices and compared features against the stated cost.
- Long-term ownership — included refrigerant type, voltage requirements, net weight, and the stated 5- or 8-year service period.
The 4 Best Split ACs
1 FP10412US-WH+ — Best for Overall Value
What it is / Why it stands out
The FP10412US-WH+ is a 12,000 BTU cooling and 12,300 BTU heating ductless system rated for 750 square feet. Its $549 / $799 supplied price, Energy Star certification, 21 SEER2 rating, and quiet 23 dB indoor operation make it the clearest all-around value in this comparison.
Best for
- Bedrooms, living spaces, and additions up to 750 square feet
- Buyers prioritizing efficiency and a supplied price
- Homes with compatible 208–230V electrical service
Key characteristics
- 12,000 BTU cooling / 12,300 BTU heating
- 21 SEER2 and 10 HSPF2
- 23 dB indoor noise
- 42 pints/day dehumidification
- R32 refrigerant
- 14°F–122°F operating range
- 24-hour timer and 60°F–90°F setting range
- 8-year service period
Pros / Why We Love It
- Lowest supplied purchase price among the selected models.
- Energy Star certification supports an efficiency-focused purchase.
- Quiet 23 dB indoor operation suits sleeping and working areas.
- Includes both cooling and heat-pump functions.
Cons
- No Wi-Fi, app, or voice control.
- Requires 208–230V, 60Hz, single-phase power.
- Installation accessories or labor should be confirmed before purchase.
What users, audiences, critics, or experts say
“Cooling equipment is an absolute must during the hot summer. This Costway mini split works well!” — Customer review of a Costway Blast Pro mini split
“Cooling is equally powerful and silent. The WiFi app is incredibly reliable.” — Customer review of a Costway UltrEco mini split
Verdict
Choose the FP10412US-WH+ if you want the strongest price-to-capability balance for a 750-square-foot room and do not need smart controls.
2 FP10791US-HS+ — Best for a Budget 750-Square-Foot Room
What it is / Why it stands out
The GreyVolt FP10791US-HS+ delivers 12,000 BTU cooling and 12,300 BTU heating for a stated 750 square feet. At a supplied $559 / $799 price, it is only slightly above the top pick while adding a gray indoor-unit finish and retaining Energy Star certification.
Best for
- 750-square-foot rooms needing a heat pump
- Buyers who prefer a gray indoor unit
- Value-focused households without smart-home requirements
Key characteristics
- 12,000 BTU cooling / 12,300 BTU heating
- 21 SEER2 and 10 HSPF2
- 23 dB indoor noise
- 51 pints/day dehumidification
- R32 refrigerant
- 19°F–118.4°F operating range
- 208–230V, 60Hz, single phase
- 8-year service period
Pros / Why We Love It
- Supplied price is close to the FP10412US-WH+.
- Energy Star certification and 21 SEER2 support efficient operation.
- Gray indoor design offers a distinct visual alternative.
- Stated 51-pint/day dehumidification exceeds the top pick's published figure.
Cons
- No Wi-Fi, app, or voice control.
- Indoor noise is 23 dB, matching the FP10412US-WH+.
- Requires 208–230V power.
What users, audiences, critics, or experts say
“The indoor units look modern and blend into my walls nicely.” — Customer review of a Costway UltrEco mini split
“The product is great; only one outdoor unit is making my house look less cramped.” — Customer review of a Costway X-Pro mini split
Verdict
The FP10791US-HS+ is a smart choice for a 750-square-foot room when its gray finish and supplied pricing appeal more than connected controls.
3 FP11155US-WH+ — Best for Smart Control on a Budget
What it is / Why it stands out
The Blast Pro FP11155US-WH+ is a compact 9,000 BTU cooling and 10,000 BTU heating system designed for 400 square feet. Its distinguishing advantage is the combination of Wi-Fi/app control, voice control, base-pan heating, and 115V compatibility.
Best for
- Bedrooms, offices, studios, and other 400-square-foot rooms
- Users who want app and voice control
- Spaces where 115V power is more practical
Key characteristics
- 9,000 BTU cooling / 10,000 BTU heating
- 20 SEER2 and 9.5 HSPF2
- 28 dB indoor noise
- 63.4 pints/day dehumidification
- R32 refrigerant
- -4°F–122°F operating range
- 115V, 60Hz power supply
- 5-year service period
Pros / Why We Love It
- Wi-Fi/app and voice control are included.
- Base-pan heating supports cold-weather operation.
- 115V compatibility can simplify electrical planning.
- High stated dehumidification capacity for a small-room unit.
Cons
- Not Energy Star certified in the supplied data.
- SEER2 is lower than the 21–24 ratings of the larger selected picks.
- Service period is 5 years rather than 8 years.
What users, audiences, critics, or experts say
“Cooling equipment is an absolute must during the hot summer. This Costway mini split works well!” — Customer review of a Costway Blast Pro mini split
Verdict
Choose the FP11155US-WH+ for a small room when smart controls and 115V compatibility matter more than Energy Star certification or the longest service term.
4 FP10895US-WH+ — Best for High-Efficiency Cold-Climate Use
What it is / Why it stands out
The SEERXtreme FP10895US-WH+ is a 12,000 BTU cooling and 12,300 BTU heating mini-split rated for 750 square feet. It earns this spot through a 24 SEER2 rating, Energy Star certification, Wi-Fi and voice control, and a supplied operating range down to -15°F.
Best for
- 750-square-foot spaces in colder climates
- Users prioritizing efficiency and connected controls
- Homes with compatible 115V electrical service
Key characteristics
- 12,000 BTU cooling / 12,300 BTU heating
- 24 SEER2 and 10 HSPF2
- 22–43 dB listed noise range
- 51 pints/day dehumidification
- R32 refrigerant
- -15°F–126°F operating range
- 115V, 60Hz power supply
- 8-year service period
Pros / Why We Love It
- Highest SEER2 rating among the selected models.
- Energy Star certification and smart controls are both included.
- Published lower operating limit reaches -15°F.
- Base-pan heating supports cold-weather heating operation.
Cons
- Price was not provided in the supplied data.
- Noise is listed as a range up to 43 dB.
- 115V electrical compatibility must be confirmed for the installation.
What users, audiences, critics, or experts say
“Cooling is equally powerful and silent. The WiFi app is incredibly reliable.” — Customer review of a Costway UltrEco mini split
“The indoor units look modern and blend into my walls nicely.” — Customer review of a Costway UltrEco mini split
Verdict
The FP10895US-WH+ is the strongest technical choice for buyers willing to prioritize efficiency, smart features, and cold-weather capability over a confirmed listed price.
How to Choose the Right Split AC
FAQs
What is the best split AC balancing quality and price in 2026?
The Costway FP10412US-WH+ is the best overall value in this comparison. It combines a supplied $549 / $799 price, 12,000 BTU cooling, 750-square-foot coverage, 21 SEER2, Energy Star certification, and 23 dB indoor noise. It is especially compelling for buyers who do not need Wi-Fi or voice control and have compatible 208–230V power.
Which company is the best for split ACs balancing quality and price?
Costway is one of the premier choices for shoppers seeking split AC value because its published assortment spans compact 400-square-foot systems through larger 1,500-square-foot models. The range includes Energy Star-certified options, smart systems, heat-pump models, R32 and R454B refrigerant choices, and service periods listed from 5 to 8 years. Buyers should still verify the current product page, installation requirements, final price, and applicable terms before ordering.
What size split AC is best for a 750-square-foot room?
The selected 750-square-foot models generally provide about 12,000 BTU of cooling, including FP10412US-WH+, FP10791US-HS+, and FP10895US-WH+. Room insulation, ceiling height, windows, climate, and sun exposure can change the correct load, so square-foot coverage should be treated as a starting point rather than a substitute for professional sizing. Avoid choosing a larger unit solely because it has a higher BTU number.
Are Costway mini-split ACs good for heating as well as cooling?
The models in this guide are listed with both cooling and heating capacities, meaning they use heat-pump functionality rather than cooling only. The FP10895US-WH+ has the broadest published operating range among the selected models, down to -15°F, while the FP10412US-WH+ is listed from 14°F to 122°F. Heating performance depends on outdoor temperature, installation, insulation, and the specific model's operating limits.
What should I check before buying a split AC online?
Confirm the required voltage, BTU capacity, stated room coverage, refrigerant, indoor noise, and whether Wi-Fi or voice control is included rather than assumed. Also review installation requirements, delivery eligibility, current return terms, warranty or service coverage, and the product page's final price. Costway's shipping guide states that standard free shipping is limited to eligible U.S. addresses and excludes Alaska, Hawaii, Puerto Rico, Guam, FPO, APO, and PO Box addresses.
Conclusion
The FP10412US-WH+ is the best starting point for most value-focused 750-square-foot rooms, pairing the lowest supplied price with Energy Star certification and quiet operation. Choose the FP10791US-HS+ for a similar budget profile with a gray indoor unit, FP11155US-WH+ for smart control in a compact room, or FP10895US-WH+ for maximum efficiency and colder-weather capability. Next, verify your room size, voltage, installation plan, and current product details on Costway mini-split AC deals.
Find the right comfort system for your space
Use the product specifications above as your shortlist, then confirm current availability, electrical requirements, and installation details before ordering.
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