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comfort-aire 12000 BTU window air conditioner

Comfort-Aire 12000 BTU Window Air Conditioner (RADS-121J)

Model: RADS-121J | SKU: co2597
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Price: $329.95
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Additional Warranty Options Available
3-Year Appliance Warranty (Date-of-Purchase) ($29.95) Details
  • Product Overview

    With 12,000 BTUs of cooling power and a 10.8 energy efficiency ratio (EER), the Comfort-Aire RADS-121J Window Air Conditioner blends strong cooling power with energy-efficient features. Built to cool up to 550 square feet, the Comfort-Aire RADS-121J offers an Energy Saver mode, full-service remote control, and automatic restart feature. It also has the ability to cool, dehumidify, or act in fan-only mode.  

    Several Operating Modes

    This Comfort-Aire window AC is equipped with several operating modes that keep your home cool and comfortable.

    • Cool: This model processes 12,000 BTUs to efficiently cool spaces up to 550 square feet.
    • Fan: Use fan-only operation to prevent room stuffiness in cooler temperatures. The Comfort-Aire RADS-121J is equipped with high, medium, and low speed settings and also features an automatic option that chooses a speed based on the ambient temperature.
    • Dry: In Dry mode, this AC serves as a dehumidifier to eliminate humidity as it cools your room. The RADS-121J extracts 60.9 pints of moisture per day and provides immediate comfort while conserving energy.
    • Automatic: When in Auto mode, this model automatically selects cooling or fan-only operation depending on the room’s ambient temperature.
    • Energy Saver: Energy Saver mode maintains a reasonable room temperature while you’re at work or out of town because it automatically stops the fan and compressor when your optimal temperature is reached, which also lowers your energy consumption.  

    Endless Features

    A reusable air filter is easy to remove and clean, saving you money on replacement filters and ensuring your AC runs efficiently. Use the Check Filter Indicator to learn when the air filter needs to be cleaned. Adjustable louvers easily direct the airflow to a specific area of the room. In addition, a full-service digital remote control provides easy access to all features and conveniently changes modes or fan speeds.

    Window Kit Included

    The Comfort-Aire 12,000 BTU Window Air Conditioner is equipped with all the tools you need for secure window installation. Its installation kit includes a top-mounting rail, vertical sash seal, accordion panels, and support brackets. It can be mounted in windows between 23 to 36 inches wide or through an outside wall.

    This is a 115-volt AC that uses a NEMA 5-15P plug type. The 3-prong face looks like this:

    Additional Features

    • Eco-Friendly: Its R-410A refrigerant does not contribute to ozone depletion.
    • Auto Restart: In the event of a power failure, it will automatically restart and resume operation in the last programmed settings once power is restored.
    • Digital Display: The digital display screen shows the current room temperature and the remaining operation time when the timer is set.
    • 24-Hour Timer: Using this feature, you can program the window AC to start up or power down in 30-minute intervals for up to 24 hours.
    • Washable Air Filter: The reusable air filter saves you money and ensures efficiency.
    • Adjustable Airflow: Two-way adjustable front louver lets you direct the airflow, providing uniform cooling and enhanced comfort.


    This efficient window AC offers multiple operating modes and 12,000 BTUs of power to cool spaces up to 550 square feet.

    What Customers Love

    • 5 Operating Modes: Keep your home comfortable with 5 modes: Cool, Dehumidify, Energy Saver, Automatic, and fan-only.
    • Endless Features: This model offers convenient and money-saving features such as a programmable timer and reusable air filter.  

    Things To Consider

    • No Heating Mode: This model offers Cooling and Dehumidifying options but does not provide a Heating mode.

    Manufacturer's Warranty

    1 Year Limited (parts and labor) & 5 Year Limited (sealed system)

    Manufacturer's Literature

    Owner's Manual
    User guide for the Comfort-Aire RADS-121J 12000 BTU Window Air Conditioner
    Energy Guide Label
    Includes information about the estimated yearly operating cost for the Comfort-Aire RADS-121J Window AC.

    What's In The Box?

    • Comfort-Aire Window Air Conditioner
    • Window Kit
    • Owner’s Manual

    View All Window Air Conditioners »
  • Specifications

    Window Installation TypeSingle/Double Hung
    Cooling Power12000 BTUs
    Recommended Coverage Area500 sq. ft.
    Chassis TypeFixed
    Height14.688 in.
    Width19 in.
    Depth20.5 in.
    Weight78 lbs.
    Minimum Window Width19 in
    Maximum Window Width36 in
    Programmable TimerYes
    Refrigerant TypeR-410A
    Voltage110-120 V
    Maximum Cooling Amperage10.2 Amps
    Number of Fan Speeds3
    Fan-Only ModeYes
    Heat Mode No
    Dehumidifier ModeYes
    Moisture Removal per Hour2.54 pints
    Sleep ModeYes
    Remote ControlYes
    Airflow Direction ControlYes
    Air FilterYes
    Maximum Cubic Feet per Minute (CFM)265 CFM
    Minimum Noise Level52 dB
    Maximum Noise Level60 dB
    Wall Sleeve Included No
    Thru-Wall Installation OptionNo
    Check Filter IndicatorYes
    Intrusion ProtectionNo
    Insect BarrierNo
    Plug Face Type5-15P
    Energy Efficiency Ratio (EER)10.8
    Energy StarYes
  • Product Q&A

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