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Keystone - 350 Sq. Ft. Through-the-Wall Air Conditioner and 350 Sq. Ft. Heater - White

  • Model: KSTAT08-1HC
  • SKU: 5890344
Cool your room with this 8000 BTU Keystone air conditioner. Its through-the-wall design is suitable for rooms up to 350 sq. ft., and it offers 4200 BTUs of supplemental heating to help warm your space. This Keystone air conditioner has an energy saver mode and a 24-hour timer to lower utility costs.

Air Conditioner Buying Guide
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    Key Specs

    • Voice Assistant Built-in
    • Recommended Room Size
      350 square feet
    • Air Conditioner Type
    • Auto Shut-Off
    • Sleep Mode
    • Timer
    • Maximum Airflow Rate
      288 cubic feet per minute
    • App-Controlled
    • Remote Control
    • Energy Efficiency Ratio
    • Number Of Fan Speeds
    • No
    • Wi-Fi Enabled
    • Integrated Heater
    • BTU Cooling Rating
      8000 british thermal units
    • Number of Cool Settings
    Keystone - 350 Sq. Ft. Through-the-Wall Air Conditioner and 350 Sq. Ft. Heater - White - Front_Standard
    (Doors closed)
    Frequently bought together
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    Frigidaire - 50-Pint Dehumidifier - White
    • $201.99
      On Sale
      Save $28Was $229.99


    What's Included

    • Keystone 8,000 BTU Through-the-Wall Air Conditioner and 4,200 BTU Heater
    • Remote control
    • 2 AAA batteries
    • Mesh filter
    • Owner's manual

    Ratings & Reviews

    Overall Customer Rating:
    100% of customers would recommend this product to a friend (1 out of 1)


    Up to 350 sq. ft. heating and cooling capacity

    Keeps your home comfortable throughout the year.

    Remote control included

    Change the air conditioner's settings, monitor its performance.

    Programmable 24-hour timer

    Enables automatic shutoff at a preset time to conserve energy.

    Three cooling and fan speeds

    Three powerful cooling and fan speeds allow you to control the temperature of your room at your pace.

    Mesh filter

    Removes odors and particles from the air for a fresh, clean environment. The clean filter alert notifies you when it's time to change the filter.

    Electronic controls with LED display

    Illuminate the current settings for added visibility.

    Self-evaporative system

    This technology recycles the condensed water to cool off the cooling coils, then evaporates the water out with the exhaust air.

    57 Dba

    Allows you to enjoy your product without noisy operational sounds.

    Designed for through-the-wall installation

    And is not designed for standard window installation. Wall sleeve sold separately.

    Customer rating

    Rating 5 out of 5 stars with 1 review

    would recommend to a friend
    • Rating: 5 out of 5 stars

      Works well as expected

      • Verified PurchaserVerified Purchase
      • My Best Buy® Elite MemberElite Member

      Works well for my bedroom and my office. I bought one for each. One came with a big dent in it though, which I never told Best Buy about because it still worked. Keeps my rooms super cold. Of course you need to keep your door and windows closed. I have never tried the heater and probably never will since I live in California

      I would recommend this to a friend

    Product images, including color, may differ from actual product appearance.