Best Costway Mini Split AC in 2025
Updated on June 2025
#1
Recommended
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- 12000 BTU cooling capacity and 1.5 ton heat pump effectively cool or heat rooms up to 750 sq. ft. Features 21 SEER2 and 10 HSPF2 ratings for energy efficiency.
- Operates in four modes: cool, heat, dry, and fan, suitable for year-round use. Low noise level (≤31 dB) ensures a quiet environment, with a 0-24h timer for custom operation scheduling.
- Includes a self-cleaning function that cools to 134.6℉ for freshness. Features a removable, washable filter for easy maintenance, auto defrost for reliability, and ETL certification for safety.
- Comprehensive kit with indoor and outdoor units, copper connection pipes, power line, communication wire, drain hose, remote control, tape, wall sleeve, and putty for easy installation.
- 5-year parts and 8-year compressor warranty for reliability. Installation should be performed by a licensed HVAC professional.
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- 12000 BTU cooling capacity and 1.5 ton heat pump effectively cool or heat rooms up to 750 sq. ft. Features 21 SEER2 and 10 HSPF2 ratings for energy efficiency.
- Operates in four modes: cool, heat, dry, and fan, suitable for year-round use. Low noise level (≤31 dB) ensures a quiet environment, with a 0-24h timer for custom operation scheduling.
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#2
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- Energy-efficient 12000 BTU cooling and 12300 BTU heating capacity, suitable for rooms up to 750 sq.ft.
- ETL certified with ECO mode and inverter technology for lower energy consumption, featuring 22 SEER2 and 9.5 HSPF2 ratings.
- 4-in-1 functionality with cooling, heating, fan, and dry modes; adjustable temperature range from 60.8℉ to 89.6℉ with multiple fan speed settings.
- Self-cleaning function at 134.6℉ for respiratory protection; includes auto defrost and easy-to-clean removable filter.
- Comes with a 5-year parts warranty and 8-year compressor warranty; installation should be performed by a licensed HVAC installer.
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- Energy-efficient 12000 BTU cooling and 12300 BTU heating capacity, suitable for rooms up to 750 sq.ft.
- ETL certified with ECO mode and inverter technology for lower energy consumption, featuring 22 SEER2 and 9.5 HSPF2 ratings.
- 4-in-1 functionality with cooling, heating, fan, and dry modes; adjustable temperature range from 60.8℉ to 89.6℉ with multiple fan speed settings.
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#3
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- Equipped with a high-power compressor and 1-ton heat pump, this AC unit provides efficient cooling and heating for year-round comfort. Its inverter technology helps reduce power consumption and extends equipment life by minimizing compressor cycling.
- This 12000 BTU split-system AC offers 5 operational modes: auto, cool, dry, heat, and fan. It includes 4 fan speeds and additional features like sleep mode, ECO mode, iFEEL, and turbo function to cater to various climate control needs.
- The remote control allows easy operation from a distance, supported by a smart timer for 0.5-24 hours. Its low-noise performance promotes a quiet environment, and the display automatically turns off after 10 seconds to avoid disturbing sleep.
- Features a self-cleaning function and washable filter to maintain air quality. The outdoor unit includes an auto-defrost function to enhance energy efficiency and protect against damage.
- The unit comes with a 5-year parts replacement warranty and 8 years of compressor coverage, ensuring long-term reliability. Installation should be performed by a licensed HVAC installer.
- Uses advanced R32 refrigerant for eco-friendliness, in contrast to competitors using less eco-conscious refrigerants. Availability of R32 should be confirmed with local vendors for any necessary refills.
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- Equipped with a high-power compressor and 1-ton heat pump, this AC unit provides efficient cooling and heating for year-round comfort. Its inverter technology helps reduce power consumption and extends equipment life by minimizing compressor cycling.
- This 12000 BTU split-system AC offers 5 operational modes: auto, cool, dry, heat, and fan. It includes 4 fan speeds and additional features like sleep mode, ECO mode, iFEEL, and turbo function to cater to various climate control needs.
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#4
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- Multi-room Cooling Solution: Designed to cool any corner of your home, this 18000 BTU 2 zone(9000 BTU+9000 BTU) mini split air conditioner can dependently adjust the temperature to meet the individual needs of different rooms. The chassis heating function maintains the normal operation of the outdoor unit, enabling it to withstand any climate conditions (-13℉~125℉).
- Less Energy Consumption, Lower GWP: This energy star certified mini split ac features an innovative inverter technology, operating at a remarkable 22 SEER2 rating and 10 HSPF2 rating. The use of R32 refrigerant brings you a greener lifestyle. Moreover, it is also certified by ETL and AHRI.
- Multiple Functions & Modes: This ductless mini split air conditioner offers 6 modes (auto/cool/heat/dry/fan/sleep) and 5 wind speeds (auto/low/mid/high/strong) for you to choose from. Other features such as auto swing, feeling and health extend comfort to daily use.
- Smart Control, Smart Life: You can easily adjust settings, monitor performance and control your AC from anywhere via your smartphone or the remote control. In addition, the 24-hour timer allows you to plan your climate control around your schedule conveniently.
- Low Noise & Easy Maintenance: With the quiet sleep mode and screen off function, you can enjoy a restful night. In addition, the filter can be easily removed and cleaned. Please note: A professional HVAC installer is required.
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- Multi-room Cooling Solution: Designed to cool any corner of your home, this 18000 BTU 2 zone(9000 BTU+9000 BTU) mini split air conditioner can dependently adjust the temperature to meet the individual needs of different rooms. The chassis heating function maintains the normal operation of the outdoor unit, enabling it to withstand any climate conditions (-13℉~125℉).
- Less Energy Consumption, Lower GWP: This energy star certified mini split ac features an innovative inverter technology, operating at a remarkable 22 SEER2 rating and 10 HSPF2 rating. The use of R32 refrigerant brings you a greener lifestyle. Moreover, it is also certified by ETL and AHRI.
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#5
50% Off
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- Rapid cooling and heating capabilities, cooling a room in 30 seconds and heating in 60 seconds, suitable for areas up to 750 sq. ft.
- Features advanced inverter technology with a 17 SEER 2 rating for high energy efficiency, uses R32 refrigerant to reduce environmental impact and energy costs.
- Offers five operational modes and four fan speed settings, including Turbo mode for quick temperature changes, ECO mode for energy saving, and Sleep/Silent modes for quiet operation.
- Equipped with self-cleaning and automatic defrost functions to maintain efficiency even in temperatures as low as -4℉, ensuring reliable performance year-round.
- AHRI certified for reliability, meeting top industry standards for performance and energy efficiency.
- Ships in two packages; professional installation is recommended for optimal functionality.
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- Rapid cooling and heating capabilities, cooling a room in 30 seconds and heating in 60 seconds, suitable for areas up to 750 sq. ft.
- Features advanced inverter technology with a 17 SEER 2 rating for high energy efficiency, uses R32 refrigerant to reduce environmental impact and energy costs.
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#6
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- High-efficiency mini split air conditioner with a powerful compressor and heat pump, covering areas up to 750 sq. ft.; ETL and AHRI certified for reliability and energy savings of 25%.
- Five operational modes including auto, cool, dry, heat, and fan; features WiFi connectivity, Alexa compatibility, and automatic defrosting.
- Quiet operation with noise levels below 41 decibels; adjustable temperature range from 60°F to 90°F using the remote control for a comfortable environment.
- Designed for all-weather use, operating efficiently in temperatures from 5°F to 118°F; provides 4D air circulation with airflow reaching up to 50 feet.
- Includes indoor and outdoor units, multifunctional remote, and installation kit; washable air filter for easy maintenance; professional installation required, shipped in two packages.
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- High-efficiency mini split air conditioner with a powerful compressor and heat pump, covering areas up to 750 sq. ft.; ETL and AHRI certified for reliability and energy savings of 25%.
- Five operational modes including auto, cool, dry, heat, and fan; features WiFi connectivity, Alexa compatibility, and automatic defrosting.
- Quiet operation with noise levels below 41 decibels; adjustable temperature range from 60°F to 90°F using the remote control for a comfortable environment.
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#7
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- Multi-room Cooling Solution: Designed to cool any corner of your home, this 30000 BTU 4 zone(9000 BTU+9000 BTU+9000 BTU+18000 BTU) mini split air conditioner can dependently adjust the temperature to meet the individual needs of different rooms. The chassis heating function maintains the normal operation of the outdoor unit, enabling it to withstand any climate conditions (-13℉~125℉).
- Less Energy Consumption, Lower GWP: This energy star certified mini split ac features an innovative inverter technology, operating at a remarkable 23 SEER2 rating and 10 HSPF2 rating. The use of R32 refrigerant brings you a greener lifestyle. Moreover, it is also certified by ETL and AHRI.
- Multiple Functions & Modes: This ductless mini split air conditioner offers 6 modes (auto/cool/heat/dry/fan/sleep) and 5 wind speeds (auto/low/mid/high/strong) for you to choose from. Other features such as auto swing, feeling and health extend comfort to daily use.
- Smart Control, Smart Life: You can easily adjust settings, monitor performance and control your AC from anywhere via your smartphone or the remote control. In addition, the 24-hour timer allows you to plan your climate control around your schedule conveniently.
- Low Noise & Easy Maintenance: With the quiet sleep mode and screen off function, you can enjoy a restful night. In addition, the filter can be easily removed and cleaned. Please note: A professional HVAC installer is required.
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- Multi-room Cooling Solution: Designed to cool any corner of your home, this 30000 BTU 4 zone(9000 BTU+9000 BTU+9000 BTU+18000 BTU) mini split air conditioner can dependently adjust the temperature to meet the individual needs of different rooms. The chassis heating function maintains the normal operation of the outdoor unit, enabling it to withstand any climate conditions (-13℉~125℉).
- Less Energy Consumption, Lower GWP: This energy star certified mini split ac features an innovative inverter technology, operating at a remarkable 23 SEER2 rating and 10 HSPF2 rating. The use of R32 refrigerant brings you a greener lifestyle. Moreover, it is also certified by ETL and AHRI.
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#8
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- ETL/AHRI-certified mini split air conditioner utilizes advanced inverter technology to save up to 25% energy while efficiently cooling or heating spaces up to 750 sq.ft.
- Offers five operational modes: auto, cool, dry, heat, and fan; WiFi-enabled with Alexa compatibility, featuring self-clean, auto defrost, and various energy-saving settings including a unique "HEALTH" mode for enhanced air quality.
- Operates quietly at sound levels below 41dB, equipped with vibration-dampening technology; Features precision remote control with temperature settings from 60°F to 90°F and advanced air circulation techniques ideal for quieter environments.
- Designed for extreme weather conditions, functioning efficiently in temperatures ranging from -5°F to 118°F; The rugged outdoor unit is corrosion-resistant, ensuring durability and maintaining performance during outages.
- Includes indoor and outdoor units, a multifunctional remote, and a complete installation kit; Features washable filters and an LCD remote with temperature memory; Professional HVAC installation is required.
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- ETL/AHRI-certified mini split air conditioner utilizes advanced inverter technology to save up to 25% energy while efficiently cooling or heating spaces up to 750 sq.ft.
- Offers five operational modes: auto, cool, dry, heat, and fan; WiFi-enabled with Alexa compatibility, featuring self-clean, auto defrost, and various energy-saving settings including a unique "HEALTH" mode for enhanced air quality.
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#9
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- 27,000 BTU 2-zone mini split AC with individual temperature control for multiple rooms, capable of cooling at 131℉ and heating at -4℉.
- Inverter technology for automatic compressor speed adjustment, enhancing energy efficiency based on indoor temperature.
- 7 operating modes (auto, cool, heat, dry, fan, sleep, ECO) and 8 fan speeds for customized comfort, along with features like I FEEL, 4D auto swing, child lock, auto defrost, and memory function.
- WiFi-enabled for remote adjustments via smartphone app or voice command through Alexa and Google Assistant; includes remote control for easy use.
- Quiet operation with sleep mode (under 30 dB), 0-24h timer, and self-cleaning feature; comes with a removable and washable filter for improved air quality. Professional HVAC installation is required.
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- 27,000 BTU 2-zone mini split AC with individual temperature control for multiple rooms, capable of cooling at 131℉ and heating at -4℉.
- Inverter technology for automatic compressor speed adjustment, enhancing energy efficiency based on indoor temperature.
- 7 operating modes (auto, cool, heat, dry, fan, sleep, ECO) and 8 fan speeds for customized comfort, along with features like I FEEL, 4D auto swing, child lock, auto defrost, and memory function.
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#10
5% Off
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- Energy Efficient Cooling & Heating: The mini split air conditioner is equipped with a high-power compressor and heat pump; Innovative inverter technology ensures optimal performance with 25% energy savings; Covers 1500 square feet, ideal for bedrooms, living rooms, garages, RVs, basements, commercial applications, and more; Our mini split AC is ETL and AHRI certified, guaranteeing reliability and energy efficiency
- Five Modes for Split AC Unit: Experience personalized comfort with five modes, including Cool, Fan, Dry, Heat, and Auto, The backlit LCD remote controller allows effortless system control. Enjoy year-round comfort with cooling, heating, and dehumidification capabilities,WiFi-enabled and Googlee-compatible Automatic defrosting, self-diagnosis/cleaning, iFEEL mode, 24-hour timer, sleep mode, energy-saving mode, "HEALTH" mode (negative ions, electrostatic dust , PM2 removal )
- Built for Any Weather : The mini split ac/heating system is designed to perform in various environments,wide range of working environment temperature , all-weather response, -20℃ (-4℉）low temperature startup, 60 ℃（140℉ ）high temperature also do，stable operation ,and anti-dead wind design; Providing optimal performance in every season, reaching a maximum airflow distance of 50 feet, creating a 4D air circulation within the room
- Easy Control & Quiet Operation:The handy remote control enables you to control this mini split AC unit from your comfortable bed or sofa conveniently. The smart 0.5-24 hour timer and low-noise operation（41 db)ensure a peaceful sleep time. What's more, the display screen on the remote control will be turned off automatically when there is no operation within 10s, which will not disturb your sleep.
- Installation Package: Our ac mini split system comes with 1 x Outdoor Unit, 1 x Indoor Unit , 1 x13 ft Copper Connection Pipe - Air Pipe, 1 x 13 ft Copper Connection Pipe - Liquid Pipe , 1 x 6.5 ft Drain Hose, 1 x 13 ft Communication Wires, 1 x Remote Control,1 x User Guide (Excluding shut off valves housing and side protection grille); While the air filter is washable and easy to clean; Professional installation is required for this system. Note: Ships in 2 packages, may arrive separately
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- Energy Efficient Cooling & Heating: The mini split air conditioner is equipped with a high-power compressor and heat pump; Innovative inverter technology ensures optimal performance with 25% energy savings; Covers 1500 square feet, ideal for bedrooms, living rooms, garages, RVs, basements, commercial applications, and more; Our mini split AC is ETL and AHRI certified, guaranteeing reliability and energy efficiency
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