Keystone 12,000-BTU Energy Star Window/Wall Air Conditioner with 11,000-BTU Supplemental Heat Capability

Item: 294846 Model: KSTHW12A
Member Only Price

Product Features:

  • Heat, cool air conditioner with removable chassis for window and wall installation
  • Special 230V/20-amp electrical outlet required (unit will not work with a standard 115V outlet)
  • 12,000/11,600-BTU cooling capacity/11,000-BTU supplemental heating capacity
  • Supplemental heat capability provides an additional heat source to your main heat source when outdoor temperatures are above 45°
  • Designed for a room up to 550 sq. ft. with dehumidification up to 2.5 pints per hour
  • Indoor noise level dba (Hi/Med/Lo): 60.9 / 58.3 / 54.7
  • Electronic controls with LED display allows you to easily select options with the touch of a button
  • Temperature sensing LCD remote control allows you control the temperature from across the room
  • Auto-restart saves your settings for when power is restored to the unit
  • Includes air conditioner, remote control, two AA batteries, mesh air filter, window installation kit, manual, warranty
  • Warranty: 1 year parts and labor
  • See All Features

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    Member Only Price
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    At keystone, your family’s comfort starts here. Keystone's budget-friendly heat, cool 230V window, the wall air conditioner is designed with a removable chassis so you can install it either in a window or through an exterior wall. The two-in-one installation marvel includes an adjustable window kit for convenient window installation. For wall installation, you can use an existing compatible wall sleeve or purchase one of them separately. In addition to cooling, this versatile unit also offers supplemental heat capability, providing you with an additional heat source to your main heat source when outdoor temperatures are above 45°. It is packed with money-saving features including energy saver mode, sleep mode, and a programmable 24-hour timer. Add the convenience of the easy-to-use follow me LCD remote control, and everyone can relax in blissful comfort.

    Product Features:

  • Heat, cool air conditioner with removable chassis for window and wall installation
  • Special 230V/20-amp electrical outlet required (unit will not work with a standard 115V outlet)
  • 12,000/11,600-BTU cooling capacity/11,000-BTU supplemental heating capacity
  • Supplemental heat capability provides an additional heat source to your main heat source when outdoor temperatures are above 45°
  • Designed for a room up to 550 sq. ft. with dehumidification up to 2.5 pints per hour
  • Indoor noise level dba (Hi/Med/Lo): 60.9 / 58.3 / 54.7
  • Electronic controls with LED display allows you to easily select options with the touch of a button
  • Temperature sensing LCD remote control allows you control the temperature from across the room
  • Auto-restart saves your settings for when power is restored to the unit
  • Includes air conditioner, remote control, two AA batteries, mesh air filter, window installation kit, manual, warranty
  • Warranty: 1 year parts and labor

  • (Model KSTHW12A)
    Model NumberKSTHW12A
    Estimated Delivery3-5 Business Days
    upc192487119532
    Delivery TypeCurbside Delivery
    Air Conditioner TypeWall-Mountable
    BTUs12000
    Cooling Coverage550 sq. ft.
    ColorWhite
    Amperage15.2-amp
    Voltage230V
    Wattage1100W
    Number of Settings3
    Number of Speeds3
    ControlsElectronic
    Timer24-hour
    FilterEasy Access Filter
    Cord Length6'
    Remote ControlYes
    Material(s)Plastic
    ENERGY STAR QualifiedYes
    Installation RequiredYes
    Installation TypeManual
    Assembly RequiredYes
    Warranty1 Year Parts and Labor
    IncludesAir Conditioner, Remote Control, 2 AAA Batteries, Mesh Air Filter, Window Installation Kit, Manual, Warranty
    Item Dimensions23"L x 22.6"W x 16.1"H
    Item Weight84 lbs.

    BJs.com Return Policy

    BJ's selects the highest quality Merchandise for our Members and stands behind the products we sell. If you are not completely satisfied with your purchase, you are entitled to a refund or exchange subject to the following guidelines. Please return your product to the nearest BJ's Club location or by following the instructions here or email us at CustomerCare@bjs.com.


    Proper Conditions for Return and Credit
    Returned merchandise must be in new condition with its original packing and accessories intact. Items purchased over 1 year ago will not be considered in new condition. If you are returning a product please check to make sure your return meets the following conditions:

    • Computers and electronics are returnable within 90 days of the shipping date
    • CDs, DVDs, computer software and video games must be unopened

    We regret that BJ’s cannot cover the cost of shipping for products returned due to buyer’s remorse.
    We cannot accept returns of:

    • Gift cards.
    • Apparel marked as final sale.
    • Opened CDs, DVDs, computer software and video games.
    • Items with gas, oil or fuel added.
    • Items restricted by law.
    • Jewelry and watches purchased in-Club after 8/3/2017.
    • Bulk purchases of ten (10) or more units of the same item purchased online in the same transaction where the total price exceeds $1,000.00.
    • Products under a manufacturer's warranty which have service center only restrictions. Please contact the manufacturer for assistance with products such as:
    • Awnings
    • Boats
    • Gas Powered Outdoor Equipment
    • Items with gas, oil, or fuel added
    • Living Room Sets
    • Major Appliances after 90 days
    • Mattresses over 1 year old
    • Pools
    • Screenhouses
    • Sheds
    • Spas & Saunas
    • Swing Sets
    • Trampolines
    • Massage Chairs

    *Bulk online sales are final and cannot be returned; reference Terms of Use available on BJs.com by clicking here, or contact your BJ’s business partner with questions.


    If you have ordered one of these non-returnable items, please inspect the item carefully and if possible, refuse delivery of incorrect or damaged products. Once the item has been accepted it will be deemed to be the correct item and in good working condition. Any issues that arise after the item is signed for must be resolved through the manufacturer’s warranty.

    Returning an Item Online

    Please see BJs.com's return policy before initiating a return.

    You may return your item at any BJ's Club location or by following the instructions below.

    1. Select “Order Status” from the top navigation of any page.
    2. If you placed your order while signed in to your online account, please sign in to your account using your username and password.
      If you placed your order while shopping as a guest, please enter your order number, recipient's email address, and the ship-to ZIP code, then click “Continue.”
    3. Your order information should now be displayed. Please review it and click the “Return”" link next to the item you would like to return.
    4. Select from the dropdown list the reason that most closely corresponds to your reason for returning the item, the package condition, and any comments you would like to make.
    5. Select “Continue.”
    6. Your return authorization request has now been made and you will receive an email within 3-5 business days (often sooner), with complete return instructions. If you do not receive an email with complete return instructions within 3-5 business days, please contact us at 866-4BJS-WEB (866-425-7932). BJ’s Member Care Representatives are available Monday - Friday, 9AM - 7PM E.T., Saturday, 9AM - 6PM E.T. and Sunday, Noon - 6PM E.T.

    PLEASE NOTE: you will not be allowed to initiate a return beyond 30 days from your date of shipping. After 30 days, please contact member care for return instructions.



    Damaged Orders
    If a signature is required please inspect your package carefully before signing for it. If after accepting the package you determine that there are damaged or defective parts, please contact the manufacturer for replacement parts. For further assistance, contact BJ’s Member Care. Do not discard the boxes or packing materials, as they may be needed to ship the item back.



    Shipping Error
    If you receive an incorrect product, please review your order information to be certain that there were no errors in the order process. If you determine that you received an item you did not order, please return your product to the nearest BJ’s Club location or initiate a return online (see “Returning an Item” above for instructions).



    Return Shipping Costs
    If you refuse your delivery without inspection, miss your delivery appointment(s) or return a non-defective or undamaged product, you will incur original shipping charges along with actual return shipping fees. In the event that your returned merchandise was mis-shipped, damaged or defective, BJ’s Member Care team will be happy to reimburse you for return shipping costs. Please contact BJ’s Member Care and we will be able to assist you.

    At keystone, your family’s comfort starts here. Keystone's budget-friendly heat, cool 230V window, the wall air conditioner is designed with a removable chassis so you can install it either in a window or through an exterior wall. The two-in-one installation marvel includes an adjustable window kit for convenient window installation. For wall installation, you can use an existing compatible wall sleeve or purchase one of them separately. In addition to cooling, this versatile unit also offers supplemental heat capability, providing you with an additional heat source to your main heat source when outdoor temperatures are above 45°. It is packed with money-saving features including energy saver mode, sleep mode, and a programmable 24-hour timer. Add the convenience of the easy-to-use follow me LCD remote control, and everyone can relax in blissful comfort.

    Product Features:

  • Heat, cool air conditioner with removable chassis for window and wall installation
  • Special 230V/20-amp electrical outlet required (unit will not work with a standard 115V outlet)
  • 12,000/11,600-BTU cooling capacity/11,000-BTU supplemental heating capacity
  • Supplemental heat capability provides an additional heat source to your main heat source when outdoor temperatures are above 45°
  • Designed for a room up to 550 sq. ft. with dehumidification up to 2.5 pints per hour
  • Indoor noise level dba (Hi/Med/Lo): 60.9 / 58.3 / 54.7
  • Electronic controls with LED display allows you to easily select options with the touch of a button
  • Temperature sensing LCD remote control allows you control the temperature from across the room
  • Auto-restart saves your settings for when power is restored to the unit
  • Includes air conditioner, remote control, two AA batteries, mesh air filter, window installation kit, manual, warranty
  • Warranty: 1 year parts and labor

  • (Model KSTHW12A)
    Model NumberKSTHW12A
    Estimated Delivery3-5 Business Days
    upc192487119532
    Delivery TypeCurbside Delivery
    Air Conditioner TypeWall-Mountable
    BTUs12000
    Cooling Coverage550 sq. ft.
    ColorWhite
    Amperage15.2-amp
    Voltage230V
    Wattage1100W
    Number of Settings3
    Number of Speeds3
    ControlsElectronic
    Timer24-hour
    FilterEasy Access Filter
    Cord Length6'
    Remote ControlYes
    Material(s)Plastic
    ENERGY STAR QualifiedYes
    Installation RequiredYes
    Installation TypeManual
    Assembly RequiredYes
    Warranty1 Year Parts and Labor
    IncludesAir Conditioner, Remote Control, 2 AAA Batteries, Mesh Air Filter, Window Installation Kit, Manual, Warranty
    Item Dimensions23"L x 22.6"W x 16.1"H
    Item Weight84 lbs.

    Thank you for submitting your question to BJs.

    BJs.com Return Policy

    BJ's selects the highest quality Merchandise for our Members and stands behind the products we sell. If you are not completely satisfied with your purchase, you are entitled to a refund or exchange subject to the following guidelines. Please return your product to the nearest BJ's Club location or by following the instructions here or email us at CustomerCare@bjs.com.


    Proper Conditions for Return and Credit
    Returned merchandise must be in new condition with its original packing and accessories intact. Items purchased over 1 year ago will not be considered in new condition. If you are returning a product please check to make sure your return meets the following conditions:

    • Computers and electronics are returnable within 90 days of the shipping date
    • CDs, DVDs, computer software and video games must be unopened

    We regret that BJ’s cannot cover the cost of shipping for products returned due to buyer’s remorse.
    We cannot accept returns of:

    • Gift cards.
    • Apparel marked as final sale.
    • Opened CDs, DVDs, computer software and video games.
    • Items with gas, oil or fuel added.
    • Items restricted by law.
    • Jewelry and watches purchased in-Club after 8/3/2017.
    • Bulk purchases of ten (10) or more units of the same item purchased online in the same transaction where the total price exceeds $1,000.00.
    • Products under a manufacturer's warranty which have service center only restrictions. Please contact the manufacturer for assistance with products such as:
    • Awnings
    • Boats
    • Gas Powered Outdoor Equipment
    • Items with gas, oil, or fuel added
    • Living Room Sets
    • Major Appliances after 90 days
    • Mattresses over 1 year old
    • Pools
    • Screenhouses
    • Sheds
    • Spas & Saunas
    • Swing Sets
    • Trampolines
    • Massage Chairs

    *Bulk online sales are final and cannot be returned; reference Terms of Use available on BJs.com by clicking here, or contact your BJ’s business partner with questions.


    If you have ordered one of these non-returnable items, please inspect the item carefully and if possible, refuse delivery of incorrect or damaged products. Once the item has been accepted it will be deemed to be the correct item and in good working condition. Any issues that arise after the item is signed for must be resolved through the manufacturer’s warranty.

    Returning an Item Online

    Please see BJs.com's return policy before initiating a return.

    You may return your item at any BJ's Club location or by following the instructions below.

    1. Select “Order Status” from the top navigation of any page.
    2. If you placed your order while signed in to your online account, please sign in to your account using your username and password.
      If you placed your order while shopping as a guest, please enter your order number, recipient's email address, and the ship-to ZIP code, then click “Continue.”
    3. Your order information should now be displayed. Please review it and click the “Return”" link next to the item you would like to return.
    4. Select from the dropdown list the reason that most closely corresponds to your reason for returning the item, the package condition, and any comments you would like to make.
    5. Select “Continue.”
    6. Your return authorization request has now been made and you will receive an email within 3-5 business days (often sooner), with complete return instructions. If you do not receive an email with complete return instructions within 3-5 business days, please contact us at 866-4BJS-WEB (866-425-7932). BJ’s Member Care Representatives are available Monday - Friday, 9AM - 7PM E.T., Saturday, 9AM - 6PM E.T. and Sunday, Noon - 6PM E.T.

    PLEASE NOTE: you will not be allowed to initiate a return beyond 30 days from your date of shipping. After 30 days, please contact member care for return instructions.



    Damaged Orders
    If a signature is required please inspect your package carefully before signing for it. If after accepting the package you determine that there are damaged or defective parts, please contact the manufacturer for replacement parts. For further assistance, contact BJ’s Member Care. Do not discard the boxes or packing materials, as they may be needed to ship the item back.



    Shipping Error
    If you receive an incorrect product, please review your order information to be certain that there were no errors in the order process. If you determine that you received an item you did not order, please return your product to the nearest BJ’s Club location or initiate a return online (see “Returning an Item” above for instructions).



    Return Shipping Costs
    If you refuse your delivery without inspection, miss your delivery appointment(s) or return a non-defective or undamaged product, you will incur original shipping charges along with actual return shipping fees. In the event that your returned merchandise was mis-shipped, damaged or defective, BJ’s Member Care team will be happy to reimburse you for return shipping costs. Please contact BJ’s Member Care and we will be able to assist you.