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Keystone - 350 Sq. Ft. 8,000 BTU Casement Window Air Conditioner - White

Model: KSTSW08B
SKU: 6542238
$479.99
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Specifications
  • Recommended Room Size
    350 square feet
    BTU Cooling Rating
    8000 british thermal units
    Number of Cool Settings
    1
    Number of Fan Speeds
    3
    Airflow Rate
    0 cubic feet per minute
    Remote Control
    Yes
  • Key Specs
    • Recommended Room Size: 350 square feet (The recommended area size in which the product is designed to operate and produce optimal results, such as the desired heating or cooling. Generally, running a unit too big or too small for the space will result in ineffective operation and wasted energy.)
    • BTU Cooling Rating: 8000 british thermal units (The amount of BTUs (British Thermal Units) per hour the unit uses to cool the air, also known as cooling capacity. For best results, the capacity of the unit should be based on the size of the area it is intended to cool. For example, a 5,000 BTU capacity works optimally for a 150 square foot room. In general, an oversized unit will not effectively remove humidity, and an undersized unit will not cool the space efficiently.)
    • Number of Cool Settings: 1
    • Number of Fan Speeds: 3
    • Airflow Rate: 0 cubic feet per minute
    • Remote Control: true
    • Integrated Heater: false
    • Sleep Mode: true (Enabling this mode sets the unit to first reach the desired temperature, then gradually increase the temperature over a period of time until it reaches a new set temperature, typically several degrees higher than the initial cool setting. This mode helps save energy while keeping the room comfortable.)
    • Timer: true
    • Auto Shut-Off: false (Feature automatically turns off the product.)
    • Combined Energy Efficiency Ratio (CEER): 10.8 (The standard used to measure energy efficiency in window and room air conditioners by the Department of Energy (DOE) as of June of 2014. CEER measures the ratio of output BTUs (British Thermal Units) to input electrical energy (watts) in standby mode and while the unit is operating. Generally, the higher the number, the more efficient the unit. Though higher efficiency units are typically more expensive upfront, they may offset the price in energy costs over time.)
    • App Compatible: false (The product can be connected to a program or software application on a mobile device, which then receives collected data from the product.)
    • Window Mounting Kit Included: true
    • Air Conditioner Type: Window
  • General
    • Brand: Keystone
    • Model Number: KSTSW08B
    • Product Name: 350 Sq. Ft. 8,000 BTU Casement Window Air Conditioner
    • Color: White
    • Air Conditioner Type: Window
  • Dimensions
    • Minimum Window Opening Height: 21.3 inches
    • Minimum Window Opening Width: 15.5 inches
    • Maximum Window Opening Height: 0 inches
    • Maximum Window Opening Width: 16.3 inches
    • Product Height: 20.87 inches (The out of box height of the item. Height is measured as the vertical distance from the bottom of the item to the top as it would be primarily used or placed.)
    • Product Width: 14.57 inches (The out of box width of the item. Width is measured as the horizontal distance from one side of the item to the other as it would be primarily used or placed.)
    • Product Depth: 23.5 inches (The out of box depth of the item. Depth is measured as the distance from the front of the item to the back as it would be primarily used or placed.)
    • Product Weight: 73 pounds (The out of box weight of the item.)
    • Cord Length: 84 inches
  • BTU Rating
    • Recommended Room Size: 350 square feet (The recommended area size in which the product is designed to operate and produce optimal results, such as the desired heating or cooling. Generally, running a unit too big or too small for the space will result in ineffective operation and wasted energy.)
    • BTU Cooling Rating: 8000 british thermal units (The amount of BTUs (British Thermal Units) per hour the unit uses to cool the air, also known as cooling capacity. For best results, the capacity of the unit should be based on the size of the area it is intended to cool. For example, a 5,000 BTU capacity works optimally for a 150 square foot room. In general, an oversized unit will not effectively remove humidity, and an undersized unit will not cool the space efficiently.)
  • Features
    • Number of Cool Settings: 1
    • Number of Fan Speeds: 3
    • Airflow Rate: 0 cubic feet per minute
    • Maximum Noise Level: 55 decibels adjusted
    • Air Discharge: Front
    • Air Direction/Circulation: 4-way
    • Moisture Removal Capacity: 21.6 pints per day (The amount of moisture removed from the air over 24 hours. The suggested moisture removal capacity is based on a room's square footage and how damp it is. For example, a 30-pint capacity unit typically works for rooms up to 1,500 square feet.)
    • Remote Control: true
    • Control Type: Touchpad, Button
    • Integrated Heater: false
    • Filter Type: Mesh, Washable
    • Sleep Mode: true (Enabling this mode sets the unit to first reach the desired temperature, then gradually increase the temperature over a period of time until it reaches a new set temperature, typically several degrees higher than the initial cool setting. This mode helps save energy while keeping the room comfortable.)
    • Timer: true
    • Auto Shut-Off: false (Feature automatically turns off the product.)
  • Power
    • Combined Energy Efficiency Ratio (CEER): 10.8 (The standard used to measure energy efficiency in window and room air conditioners by the Department of Energy (DOE) as of June of 2014. CEER measures the ratio of output BTUs (British Thermal Units) to input electrical energy (watts) in standby mode and while the unit is operating. Generally, the higher the number, the more efficient the unit. Though higher efficiency units are typically more expensive upfront, they may offset the price in energy costs over time.)
    • Voltage Requirement: 115
    • Amperage: 6.6 amperes (Strength of electrical current.)
  • Certifications Listings & Approvals
    • ENERGY STAR Certified: false (Devices carrying the ENERGY STAR service mark, such as computer products and peripherals, kitchen appliances, and other products, generally use 20% to 30% less energy than required by federal standards.)
  • Compatibility
    • App Compatible: false (The product can be connected to a program or software application on a mobile device, which then receives collected data from the product.)
  • Included
    • Window Mounting Kit Included: true
  • Other
    • UPC: 840148724174

Upgrade your home with the Keystone 8,000 BTU window air conditioner, the best energy-efficient, quiet, and modern AC unit with remote control and timer for easy installation. This window and wall-mounted AC unit is perfect for large room air conditioners up to 350 sq. ft. Experience efficient cooling with 3 fan speeds, 4-way air direction control, and built-in dehumidification capabilities. Additionally, the coldest AC unit features a washable filter for healthy indoor air quality and an energy saver mode for cost-effective cooling solutions. Stay cool and comfortable in your home this summer with the Keystone window air conditioner.

  • Versatile Window and Wall Mounted Air Conditioner: This Keystone Air Conditioner is the best window and wall-mounted AC unit, perfect for apartments, bedrooms, living rooms, and more. With an 8,000 BTU rating, this energy-efficient and quiet AC unit efficiently cools large rooms up to 350 square feet, making it the coldest AC unit available.
  • Enhanced Cooling Performance: Enjoy maximum comfort with 3 cooling modes, 3 fan speeds, adjustable air louvers, and a programmable timer. The efficient built-in dehumidification system removes 0.9 pints of moisture per hour, delivering energy-efficient and modern window cooling.
  • Precise Air Direction Control: Take control of your comfort with the 4-way air direction control feature. Direct the airflow where you need it most using the quiet AC with remote control for optimal comfort and convenience.
  • Energy-Saving Operation: Reduce your electric bill with Energy Saver and Sleep modes that automatically adjust energy consumption while providing the same amount of comfort. This energy-efficient window AC unit is designed to be the best air conditioner for your home.
  • Flexible Installation Design: Designed with a removable chassis, this easy-to-install air conditioner can be mounted in windows or through exterior walls. It includes an adjustable window kit, making it the perfect window AC unit for home use in horizontal slider or casement windows.
Whats Included
  • air conditioner
  • manual
  • warranty
  • window installation kit
  • filter
  • remote
  • AAA batteries
Documents
  • Energy_Guide_PDF

Q: How many fan speeds does the air conditioner have?

A: This air conditioner features 3 fan speeds.

Q: Can this air conditioner be installed in a wall?

A: Yes, it can be installed in a window or through an exterior wall.

Q: How much moisture can this air conditioner remove from the air?

A: This unit removes 0.9 pints of moisture from the air every hour.

Q: Does this Keystone air conditioner have a remote control?

A: Yes, this air conditioner includes a remote control.

Q: What is the maximum room size this air conditioner is recommended for?

A: This air conditioner is recommended for rooms up to 350 square feet.

Q: Is there a cover available for this air conditioner?

A: Thank you for your question. Please reach out to Keystone customer support at [email protected] for further assistance.

Q: Where can I find replacement filter for this?

A: Thank you for your question. Please reach out to the customer service at [email protected] for further assistance.

Q: Will this air conditioner fit into a small window measuring 14-7/8” wide?

A: Hi! Thank you so much for your question. The proper window size as per the manual is 15-1 2 inches minimum width. Kindly refer to this manual for your reference; https://assetserver.net/_assets/keystone/pdf/kstsw08b-manual.pdf Hope this helps. :)

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Reviews

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The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.

  • Rated 5 out of 5 stars

    Happy & Cool

    This was the perfect solution for our needs. It fit in our casement window, easy to install, landlord friendly, reasonably priced, and the sleep feature is great during daytime to keep our pets cool & not gave it on all day. I love it!

    Posted by Speedy

  • Rated 5 out of 5 stars

    Keystone casement 8000btu

    Works great easy install, looks great on casement window. really cools the room on hot summer days

    Posted by SantosC

  • Rated 5 out of 5 stars

    Window a/c unit

    Best A/c unit i ever owned very powerful i really recommend this

    Posted by AbelJ

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