1. Introduction
This manual provides essential instructions for the safe and efficient operation, maintenance, and troubleshooting of your Oster Portable 4-in-1 Air Cooler, Model 12563. Please read this manual thoroughly before using the appliance and retain it for future reference.
The Oster Portable 4-in-1 Air Cooler is designed to cool, filter, humidify, and ventilate your environment, offering enhanced comfort. It features a compact design, a 5.3-liter water reservoir, and a 360-degree oscillation system for even air distribution.
2. Important Safety Instructions
Always follow basic safety precautions when using electrical appliances to reduce the risk of fire, electric shock, and injury.
- Ensure the appliance is connected to a grounded power outlet with the correct voltage (110 Volts).
- Do not immerse the appliance, cord, or plug in water or other liquids.
- Unplug from the outlet when not in use, before assembling or disassembling parts, and before cleaning.
- Keep the appliance out of reach of children.
- Do not operate any appliance with a damaged cord or plug, or after the appliance malfunctions or has been damaged in any manner.
- Do not block air openings.
- Use only as described in this manual.
3. Product Components
Familiarize yourself with the main parts of your Oster Portable Air Cooler.

- Main Unit: The primary body of the air cooler.
- Air Outlet: Circular opening for air dispersion.
- Control Panel: Touch-sensitive panel on top for operation.
- Water Reservoir: Located at the top, with a total capacity of 5.3 liters.
- Water Level Indicator: Visible on the front of the unit.
- Wheels: For easy portability.
- Remote Control: For convenient operation from a distance.
4. Setup
4.1 Unpacking
- Carefully remove the air cooler from its packaging.
- Check for any damage during transit. If damaged, do not operate and contact customer support.
- Ensure all accessories are present: remote control, 3 gel packs.
4.2 Placement
Place the air cooler on a flat, stable surface. Ensure there is adequate space around the unit for proper airflow. The compact design allows placement even under countertops.
4.3 Filling the Water Reservoir

- Open the top cover of the water reservoir.
- Pour clean water into the reservoir. Do not exceed the maximum fill line indicated on the water level indicator. The total capacity is 5.3 liters.
- For enhanced cooling, place the included gel packs (previously frozen) into the reservoir.
- Close the top cover securely.
5. Operating Instructions
The Oster Portable 4-in-1 Air Cooler can be operated using the touch control panel on the unit or the remote control.

5.1 Power On/Off
- Press the Power button on the control panel or remote control to turn the unit on or off.
5.2 Mode Selection (4-in-1 Functionality)
The unit offers four functions: Cooling, Filtering, Humidifying, and Ventilating.
- Cooling/Humidifying: This function is active when water is in the reservoir. Press the Cooling/Humidifying button to activate.
- Ventilation: The fan operates to circulate air.
- Filtering: Air is passed through an internal filter.
5.3 Fan Speed Adjustment
Select from 3 available fan speeds.
- Press the Speed button repeatedly to cycle through Low, Medium, and High speeds.
5.4 Oscillation Function (All Fresh 360°)

Activate the 360-degree oscillation for wider air distribution.
- Press the Oscillation button to start or stop the rotation.
5.5 Timer Setting
Set the operating time for up to 7 hours.
- Press the Timer button repeatedly to select desired operating hours (e.g., 1H, 2H, 4H, 7H).
5.6 Night Mode
Engage Night Mode for quieter operation and reduced light display.
- Press the Night Mode button to activate or deactivate.
5.7 Remote Control

The remote control duplicates all functions available on the main unit's control panel. Ensure batteries are correctly inserted.
6. Maintenance and Cleaning
Regular maintenance ensures optimal performance and extends the lifespan of your air cooler. Always unplug the unit before cleaning.
6.1 Exterior Cleaning
- Wipe the exterior surfaces with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- The design without external fins or grilles makes cleaning easier and safer.
6.2 Water Reservoir Cleaning
To prevent mold or mildew growth, clean the water reservoir regularly.
- Unplug the unit.
- Drain any remaining water from the reservoir.
- Wipe the inside of the reservoir with a soft cloth and mild detergent. Rinse thoroughly.
- Ensure the reservoir is completely dry before refilling or storing.
6.3 Filter Cleaning
The internal filter should be cleaned periodically to maintain air quality and efficiency.
- Refer to the specific instructions in the full manual for accessing and cleaning the internal filter.
- Gently remove dust and debris.
- Rinse with water if necessary and allow to air dry completely before reinserting.
7. Troubleshooting
Before contacting customer support, refer to the following common issues and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not turn on. | Not plugged in; power outlet malfunction; power button not pressed. | Ensure plug is securely in a working outlet. Press the power button. |
| No cool air. | Water reservoir empty; gel packs not frozen or not used. | Fill water reservoir. Use frozen gel packs for enhanced cooling. |
| Weak airflow. | Fan speed set too low; air filter clogged. | Increase fan speed. Clean or replace the air filter. |
| Unit is noisy. | Unit not on a flat surface; internal component obstruction. | Place on a stable, flat surface. Check for any foreign objects. |
8. Specifications
| Feature | Detail |
|---|---|
| Model | 12563 |
| Brand | Oster |
| Functions | Cooling, Filtering, Humidifying, Ventilating (4-in-1) |
| Voltage | 110 Volts |
| Power Consumption | 75 Watts |
| Water Reservoir Capacity | 5.3 Liters (total with 2 reservoirs) |
| Dimensions (L x W x H) | 24 x 26 x 71 cm |
| Weight | 5.74 kg |
| Control Panel | Touch |
| Special Features | Silent operation, 360° oscillation (All Fresh), Remote Control, 7-hour timer |
| Material | Stainless Steel (internal components, main body is plastic) |

9. Warranty Information
This Oster product is covered by a manufacturer's warranty against defects in materials and workmanship. The standard warranty period is typically 1 year from the date of purchase. Please retain your proof of purchase for warranty claims.
Extended warranty options may be available for purchase:
- 12-month extended warranty against failures and defects.
- 24-month extended warranty against failures and defects.
For detailed warranty terms and conditions, please refer to the warranty card included with your product or visit the official Oster website.
10. Customer Support
If you have any questions, require technical assistance, or need to make a warranty claim, please contact Oster customer support.
- Website: Visit the official Oster website for FAQs and support resources.
- Phone: Refer to the contact information provided in your product packaging or on the Oster website for local support numbers.
- Online Store: Visit the Oster Store on Amazon