Name: Keystone - 8,000 BTU 350 Sq. Ft. Through-the-Wall Air Conditioner with 4,200 BTU Supplemental Heat Capability - White
Brand: Keystone
SKU: 6587484
Rating: 0 (0 reviews)

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: 3
- Number of Fan Speeds: 3
- Airflow Rate: 288 cubic feet per minute
- Remote Control: true
- Integrated Heater: true
- 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: true (Feature automatically turns off the product.)
- Combined Energy Efficiency Ratio (CEER): 9.6 (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: KSTAT08-1HD
- Product Name: 8,000 BTU 350 Sq. Ft. Through-the-Wall Air Conditioner with 4,200 BTU Supplemental Heat Capability
- Color: White
- Air Conditioner Type: Window
Dimensions
- Minimum Window Opening Height: 14.5 inches
- Minimum Window Opening Width: 24.2 inches
- Maximum Window Opening Height: 14.5 inches
- Maximum Window Opening Width: 24.2 inches
- Product Height: 14.5 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: 24.2 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: 20.3 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: 65 pounds (The out of box weight of the item.)
- Cord Length: 78 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.)
- BTU Heat Rating: 4200 british thermal units (The number of BTUs (British Thermal Units) per hour the unit produces to heat the air, also known as heating capacity. For best results, the capacity of the unit should be based on the size of the area it is intended to heat. The recommended capacity depends on several factors such as climate and level of insulation, but generally ranges from 30-60 BTUs per square foot.)
Features
- Number of Cool Settings: 3
- Number of Fan Speeds: 3
- Airflow Rate: 288 cubic feet per minute
- Maximum Noise Level: 57 decibels adjusted
- Remote Control: true
- Control Type: Button, Button, Button
- Integrated Heater: true
- 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: true (Feature automatically turns off the product.)
Power
- Combined Energy Efficiency Ratio (CEER): 9.6 (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.)
- Amperage: 7.8 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
Warranty
- Warranty - Parts: 1 year
- Warranty - Labor: 1 year
Other
- UPC: 840148726062

Enhance your home comfort with Keystone's advanced through-the-wall air conditioner, delivering reliable cooling and supplemental heating capabilities with an 8,000 BTU cooling and 4,200 BTU heating capacity. This energy-efficient and quiet AC unit is perfect for spaces up to 350 square feet, offering superior dehumidification of up to 2.1 pints per hour for improved air quality. Designed for easy installation in homes, this modern unit includes a remote control for convenient temperature adjustments and features a built-in thermostat for precise control. With energy-saving modes and a programmable timer, this unit helps reduce electricity costs while maintaining optimal performance. Upgrade to the best through-the-wall AC for your large room cooling needs.

Through-the-Wall Installation: Enjoy easy setup with this unit (Not for window installation)
Standard Interior Trim Kit Included: Universally designed for existing wall sleeves (New wall sleeve option: KSTSLV1 available separately)
Powerful Cooling and Heating: 8,000 BTU cooling capacity and 4,200 BTU supplemental heating capacity for year-round comfort
Efficient Room Coverage: Designed for spaces up to 350 sq. ft. with dehumidification up to 2.1 pints per hour
Convenient Controls and Remote: Electronic controls with LED display and LCD remote for easy temperature adjustments from anywhere in the room. Auto-restart feature saves settings for uninterrupted comfort.
Through-the-Wall Installation: Enjoy easy setup with this unit (Not for window installation)
Standard Interior Trim Kit Included: Universally designed for existing wall sleeves (New wall sleeve option: KSTSLV1 available separately)
Powerful Cooling and Heating: 8,000 BTU cooling capacity and 4,200 BTU supplemental heating capacity for year-round comfort
Efficient Room Coverage: Designed for spaces up to 350 sq. ft. with dehumidification up to 2.1 pints per hour
Convenient Controls and Remote: Electronic controls with LED display and LCD remote for easy temperature adjustments from anywhere in the room. Auto-restart feature saves settings for uninterrupted comfort.