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Overview

Stay comfortable throughout the year with the Costway 12000 BTU Mini Split Air Conditioner and Heater, designed for cooling and heating in spaces up to 750 sq. ft. Energy-saving inverter technology and multiple modes give you flexible control and convenience every day.
  • 12000 BTU cools or heats up to 750 sq. ft. — fits living rooms and open studios
  • Ultra-quiet 23dB operation for comfort like a quiet room
    • This description was generated by AI and reviewed for accuracy.

    Costway 3-in-1 Mini-Split Air Conditioner - 12000 BTU (750 sq ft Coverage) - 23dB, Heat, Remote - Grey,White

    Model: HCST03115
    Web Code: 18189017
    Sold and shipped by | 3.7 seller rating (5,174 reviews)

    Available for deliveryAvailable online only

    Delivery times vary by location. Most Marketplace items leave sellers' locations within 2 business days. Allow additional time for shipping.

    Enjoy on orders from this seller.

    Seller Return Policy

    Read return policy

    Warranty

    Check with the manufacturer for details.

    For Quebec residents: See the Availability Guarantee disclosure in the Specifications section below.

    What's included:

    • 1x Indoor Unit
    • 1x Outdoor Unit
    • 1x 13 ft Copper Connection Pipe - Liquid Pipe
    • 1x 13 ft Copper Connection Pipe - Air Pipe
    • 1x 8 ft Power Line
    • 1x 15 ft Communication Wire
    • 1x 6.5 ft Drain Hose
    • 1x Remote Control with 2 Batteries
    • 1x Tape
    • 1x Wall Sleeve
    • 1x Putty
    • 1x User Guide
    What you need to know
  • Mini split air conditioner with heat pump for flexible installation
  • 12000 BTU capacity cools or heats up to 750 sq. ft. (large open-plan living space, very large studio)
  • Indoor noise level as low as 23dB, similar to a quiet room
  • Dehumidifying capacity of 51 pints per day
  • 208-230V~60Hz/1PH power supply
    • Cooling & Air Flow
  • 4-in-1 design provides cooling, heating, drying, and fan modes
  • 360° air flow supply helps distribute air evenly and avoid direct blowing
  • Multiple fan speeds (low/medium/high) adjust airflow to your comfort
  • Turbo mode delivers quick temperature changes when needed
    • Comfort & Humidity
  • Inverter technology helps optimize energy efficiency while maintaining comfort
  • iFEEL mode senses temperature near you for more personalized comfort
  • Humidity removal through dry mode and a dehumidifying capacity of 51 pints per day
  • Sleep mode and 0-24hour timer enhance night-time comfort and convenience
    • Controls & Modes
  • Remote control with digital display for easy operation from anywhere in the room
  • Compatible with Alexa or Google assistant for hands-free control
  • ECO mode for reduced energy consumption
  • Swing function helps direct airflow around the room
    • Filters & Air Quality
  • Washable filter and self-cleaning function support easy maintenance and cleaner air
    • Installation & Portability
  • Includes 13 ft. copper connection pipes, power line, communication wire, drain hose, wall sleeve, tape, and putty for installation flexibility
  • Includes a remote control with 2 batteries
    • Maintenance
  • Auto defrost function helps prevent damage to the unit
    • Safety
  • ETL and AHRI certification ensure reliable use
    • This description was generated by AI and reviewed for accuracy.

    For Quebec residents – Disclosure under the Consumer Protection Act

    In compliance with Bill 29, Best Buy and third-party sellers on Best Buy Marketplace do not guarantee the availability of replacement parts, repair services, or maintenance information for any products. Coverage provided through any Best Buy Protection programs and applicable manufacturer warranties, if any, remain in place. Please contact the manufacturer directly for information about their availability guarantee.

    Shipping Charges

    Free standard shipping on all orders.

    Processing Time

    Most items ship within 2 business days after an order is placed*. Allow additional time for shipping to your address.
    *Please note: If an item you ordered becomes unavailable, you'll be notified and a full refund will be processed within 2 business days.

    Shipping Area Restrictions

    Shipping is not available in the following areas*:
    • No restrictions in Canada
    *Please note: Shipping area restrictions may vary for large items. If an item can't be shipped to your address, we'll let you know during the checkout process.
    See our return policy to find specific return information for this product and steps on how to return by mail.