1. Product Overview
This manual provides instructions for the installation and maintenance of your WESTHEY AP02 Replacement Filter. This filter is specifically designed for use with the WESTHEY AP02 Air Purifier to ensure optimal air purification performance.
2. Product Features
The WESTHEY AP02 Replacement Filter features a 3-in-1 filtration system designed to capture various airborne particles and odors:
- Pre-filter: Captures larger particles such as hair, lint, and pet fur.
- H13 True HEPA Filter: Efficiently captures 99.97% of airborne particles as small as 0.3 microns, including pollen, pet dander, and fine dust.
- Activated Carbon Filter: Absorbs various household odors, smoke, volatile organic compounds (VOCs), and other harmful gases.

This diagram shows the internal structure of the filter, highlighting its three layers: the Pre-filter for larger particles like hair and lint, the H13 HEPA Filter for fine particles such as pollen and pet dander, and the Activated Carbon Filter for odors, smoke, and VOCs.
3. Compatibility
This replacement filter is designed exclusively for the WESTHEY AP02 Air Purifier. Using non-genuine or incompatible filters may affect the performance and lifespan of your air purifier.

The image displays the WESTHEY AP02 replacement filter, confirming its perfect fit and high performance with the WESTHEY AP02 air purifier models shown.
4. Filter Replacement Instructions
Follow these steps to replace the filter in your WESTHEY AP02 Air Purifier:
- Prepare the Purifier: Turn off and unplug the air purifier from the power outlet.
- Access the Filter: Carefully turn the air purifier upside down and unscrew the bottom cover.
- Remove Old Filter: Take out the used filter. Ensure you remove any plastic packaging from the new filter before installation.
- Install New Filter: Place the new filter into the air purifier, ensuring it is seated correctly.
- Secure Cover: Replace the bottom cover and screw it back into place.
- Power On: Plug the unit back into the power outlet and turn it on.
- Reset Filter Indicator: Press and hold the 'FILTER' button on the control panel for 3 seconds until you hear three beeps. This resets the filter life indicator.

This visual guide demonstrates the filter replacement process: 1. Flipping the air purifier and removing the bottom cover. 2. Taking out the old filter and unwrapping the new one. 3. Placing the new filter into the air purifier and securing the cover. 4. Pressing and holding the filter button for 3 seconds to reset the filter indicator.
5. Maintenance
To maintain optimal air purification performance, it is recommended to replace the filter every 3-6 months. The filter has an estimated lifespan of 1440 hours of operation. The air purifier will indicate when a filter replacement is due.

This image illustrates the difference between a new WESTHEY AP02 filter and one after approximately 6 months of use, highlighting the importance of regular replacement for optimal performance.
6. Specifications
| Attribute | Detail |
|---|---|
| Model Number | AP02-W-F1 |
| Product Dimensions | 5.51 x 5.51 x 5.51 inches |
| Item Weight | 5.12 ounces |
| Filtration Type | 3-in-1 (Pre-filter, H13 True HEPA, Activated Carbon) |
7. Troubleshooting
If you encounter any issues with your WESTHEY AP02 Replacement Filter or air purifier after installation, please ensure the filter is correctly seated and the bottom cover is securely fastened. If problems persist, refer to your air purifier's main instruction manual or contact customer support.
8. Customer Support
For any questions regarding your WESTHEY AP02 Replacement Filter, installation, or general inquiries, please contact WESTHEY customer service. We are committed to ensuring your satisfaction.