Product Overview
This manual provides detailed instructions for the safe and efficient operation of your Keystone 10,000 BTU Compact Window Air Conditioner. This unit is designed to provide reliable cooling and dehumidification for small to medium-sized rooms.
Key Features
- Reliable Window AC Units: Powerful 10,000 BTU cooling for rooms up to 450 Sq.Ft.
- Maximum Comfort: 3 cooling modes, 3 fan speeds, 4-way adjustable air louvers, programmable timer, and 2.3 pints/hour dehumidification.
- Washable Filter: Check Filter alert and easy-clean mesh filter for improved air quality.
- Smart Remote Control: Remote with LCD screen and temperature sensing for accurate cooling.
- Energy Saving Comfort: "Energy Saver" and "Sleep" modes to optimize energy consumption.

Front view of the Keystone 10,000 BTU Compact Window Air Conditioner, showcasing its control panel and air vents.
Setup and Installation
Your Keystone window air conditioner comes with a complete window installation kit for easy setup. Ensure the unit is securely installed in a compatible window with a width between 23 inches and 36 inches.
Pre-Installation Checklist
- Verify window dimensions are within the compatible range (23-36 inches).
- Ensure a grounded 115V power outlet (NEMA 5-15P) is available within 6.4 ft of the installation location.
- Unpack all components, including the air conditioner, remote control, 2 AAA batteries, easy-clean mesh filter, window installation kit, and this manual.

Diagram showing the air conditioner installed in a window, highlighting the compatible window width range of 23 to 36 inches.

Image illustrating the NEMA 5-15P plug type and the 6.4 ft LCDI cable length of the air conditioner.
Operating Instructions
Control Panel and Remote
The unit features electronic controls on an LED display and can also be operated using the included remote control. The remote control includes a built-in thermostat for precise temperature sensing from your location.

A hand holding the remote control, showing its LCD screen displaying temperature and various function buttons.
Modes of Operation
- Cool Mode: Provides cooling with adjustable temperature settings.
- Fan Mode: Circulates air without cooling. Features 3 fan speeds (Low, Medium, High).
- Dry Mode (Dehumidifier): Removes excess moisture from the air, up to 2.3 pints per hour.
- Energy Saver Mode: Optimizes cooling to reduce energy consumption.
- Sleep Mode: Gradually increases room temperature to save energy during sleep.
Adjusting Airflow
The air louvers can be adjusted 4-ways to direct airflow as desired.
Programmable Timer
Use the programmable timer to set the unit to turn on or off automatically.
Maintenance
Cleaning the Air Filter
The "Check Filter" indicator light will illuminate when it's time to clean the mesh filter. Regular cleaning ensures optimal performance and air quality.
- Turn off and unplug the air conditioner.
- Slide the washable, reusable mesh filter out from the unit.
- Wash the filter with warm, soapy water. Rinse thoroughly.
- Allow the filter to air dry completely before reinserting it into the unit.

A hand demonstrating the removal of the washable mesh filter from the front of the air conditioner.
Troubleshooting
If your air conditioner is not operating as expected, please refer to the following common issues before contacting customer support. For more detailed troubleshooting steps, consult the full User Guide.
- Unit does not turn on: Check if the unit is properly plugged into a grounded outlet. Ensure the circuit breaker has not tripped. Verify the remote control batteries are not depleted.
- Insufficient cooling: Ensure all windows and doors are closed. Check if the air filter is clean. Verify the temperature setting is lower than the room temperature.
- Unusual noise: Small noises during operation are normal. If the noise is excessive or unusual, ensure the unit is level and securely installed.
For further assistance, please refer to the official User Guide (PDF).
Product Specifications
| Feature | Specification |
|---|---|
| Brand | Keystone |
| Model Number | KSTAW10BE |
| Cooling Capacity | 10,000 BTU |
| Coverage Area | Up to 450 Sq.Ft. |
| Voltage | 115 Volts |
| Wattage | 885 watts |
| Dehumidification | 2.3 Pints/Hour |
| Sound Level | 60 dB |
| Product Dimensions | 19"D x 21.5"W x 14.6"H |
| Item Weight | 59.8 pounds |
| Included Components | Air conditioner, remote control, 2 AAA batteries, easy-clean mesh filter, window installation kit, manual, warranty |

Diagram showing the physical dimensions (19in D x 21.5in W x 14.6in H) and weight (59.8 lb) of the air conditioner.
Warranty and Support
Your Keystone 10,000 BTU Compact Window Air Conditioner comes with a 1-year parts and labor warranty, plus an additional 4 years for the sealed system.
For customer support, technical assistance, or warranty claims, please refer to the contact information provided in the official User Guide.
You can download the full User Guide (PDF) for detailed information.





