Outlet EventEnds Jan. 19. Limited quantities. No rainchecks.Shop now

Main Content
product image

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

Model: KSTAT08-1HC
SKU: 5890344
This item is no longer available in new condition. See similar items below
  • 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.)
    • Energy Efficiency Ratio: 9.6 (The ratio of output BTUs (British Thermal Units) to input electrical energy (watts) at a given operating point. 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.)
    • 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.)
    • Wireless Connectivity: None (The manner in which a device sends data to another device over a short distance without the use of wires or cables.)
    • Air Conditioner Type: Wall
  • General
    • Brand: Keystone
    • Model Number: KSTAT08-1HC
    • Product Name: 350 Sq. Ft. Through-the-Wall Air Conditioner and 350 Sq. Ft. Heater with Supplemental Heat
    • Color: White
    • Air Conditioner Type: Wall
  • Dimensions
    • Cut-Out Height: 15.25 inches (Minimum required height of the installation location for a standard installation of the product. This measurement will help you determine if the appliance will fit into the desired space and have the clearance necessary for proper operational use. Please refer to the manufacturer’s installation documentation for detailed measurement requirements.)
    • Cut-Out Width: 25.5 inches (Minimum required width of the installation location for a standard installation of the product. This measurement will help you determine if the appliance will fit into the desired space and have the clearance necessary for proper operational use. Please refer to the manufacturer’s installation documentation for detailed measurement requirements.)
    • Cut-Out Depth: 17.5 inches (Minimum required depth of the installation location for a standard installation of the product. This measurement will help you determine if the appliance will fit into the desired space and have the clearance necessary for proper operational use. Please refer to the manufacturer’s installation documentation for detailed measurement requirements.)
    • 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: 23.3 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: 7 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
    • Air Discharge: Top
    • Air Direction/Circulation: 4-way
    • Remote Control: true
    • Control Type: Button
    • Integrated Heater: true
    • Filter Indicator Light(s): true
    • Filter Type: Washable, Mesh
    • 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
    • Energy Efficiency Ratio: 9.6 (The ratio of output BTUs (British Thermal Units) to input electrical energy (watts) at a given operating point. 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.)
    • 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.)
    • Voltage Requirement: 115
    • Amperage: 12 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.)
    • Wireless Connectivity: None (The manner in which a device sends data to another device over a short distance without the use of wires or cables.)
  • Included
    • Sleeve Included: true
  • Other
    • UPC: 013964884067

The Keystone 8,000 BTU 115V through-the-wall air conditioner with 4,200 BTU Supplemental Heat Capability is perfect for rooms up to 350 square feet. 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 degrees Fahrenheit. It has electronic controls with LED display and a temperature sensing LCD remote control allowing you to conveniently see, set and maintain the room temperature from across the room. Money saving features include energy saver mode, sleep mode and a programmable 24-hour timer. Plus, quiet operation (51.8 dB on low) helps you get a good night's sleep. This unit is designed for through-the-wall installation and is not designed for standard window installation (WALL SLEEVE SOLD SEPARATELY). Supplemental Heating mode meant to be operated when temperatures outside are between 23 & 76 degrees. Mode is supplemental and NOT meant as primary heat source.

  • Up to 350 sq. ft. heating and cooling capacity: Keeps your home comfortable throughout the year. Supplemental Heating mode meant to be operated when temperatures outside are between 23 & 76 degrees. Mode is supplemental and NOT meant as primary heat source.
  • 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.
  • Up to 350 sq. ft. heating and cooling capacity: Keeps your home comfortable throughout the year. Supplemental Heating mode meant to be operated when temperatures outside are between 23 & 76 degrees. Mode is supplemental and NOT meant as primary heat source.
  • 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.
Whats 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
  • Keystone 8,000 BTU Through-the-Wall Air Conditioner and 4,200 BTU Heater
  • Remote control
  • 2 AAA batteries
  • Mesh filter
  • Owner's manual
Documents
  • Energy_Guide_PDF
  • Energy_Guide_PDF

Q: Is a air conditioner and heater through-the-wall differentl from a portable because the portable is such a problem because you have to use a hose to pull out the hot air. Please explain if placed on the wall how does it evaporators the water and where d?

A: It is not placed ON the wall, it is placed THROUGH the wall. It is just like a window air conditioner except that it goes through the wall into a metal sleeve (which must be purchased separately ). You also have to have the wall opening cut to fit the sleeve if it is not already there. The water is evaporated outside the room so there is no leakage into the room.

Q: What are the actual dimentions?

A: The dimensions are 24.2 inches x 14.5 inches x 23.3 inches. WxHxD

Q: The specs say this has a 7 inch cord. I'm hoping that's a typo. Is that correct?

A: It is more like 7 feet. I discovered this when they were installed and took the extension cords I bought at Lowe's back.

Q: Hello. I installed my window unit. Using the heat but it is not heating.

A: This unit is only designed to assist in maintaining the temperature of a room's primary heat source by providing supplemental warmth. This means the heat mode is only able to function properly when outdoor temperatures are above 45°F.

Q: Hello, can this be used in a sleeve that already exists in an apartment? If so, what is the min size sleeve required? The sleeve that is there is a standard apart Fredrich sleeve that I see in many apartments. Does it blow hot air out back?

A: I used it in an existing sleeve. The standard sleeve is 26' wide. The air conditioner was 24" wide. It comes with foam to fill in the space. I assume it blows hot air out the back, since none is coming out the front.