HOMFILBIT KJ800
HOMFILBIT COLZER KJ800 Air Purifier Replacement Filter Instruction Manual
Essential guide for installation, maintenance, and optimal performance of your replacement filters.
1. Introduction
Thank you for choosing HOMFILBIT replacement filters for your COLZER KJ800 Air Purifier. This manual provides detailed instructions to ensure proper installation and maintenance, helping you achieve optimal air purification performance. Regular filter replacement is crucial for maintaining air quality and extending the lifespan of your air purifier.

Image 1.1: Two HOMFILBIT replacement filters for COLZER KJ800 Air Purifier.
1.1 Quality Assurance
Our filters are manufactured with precision and undergo rigorous quality control processes to ensure high performance and durability. The following video provides insight into our production process:
Video 1.1: A video showcasing the production process of air purifier filters, highlighting the manufacturing steps and quality control measures.
2. Product Features
The HOMFILBIT replacement filters for COLZER KJ800 Air Purifier feature a 3-in-1 composite design for comprehensive air purification:
- Pre-filter: Captures large particles such as dust, lint, fibers, and pet fur, extending the life of subsequent filters.
- Activated Carbon Filter: Absorbs various household odors, smoke, cooking smells, and volatile organic compounds (VOCs).
- True HEPA Filter: Designed to capture 99.97% of airborne particles as small as 0.3 microns, including pollen, pet dander, dust mites, and other allergens.

Image 2.1: Illustration of the 3-in-1 filtration layers: Pre-filter, Activated Carbon, and True HEPA Filter.

Image 2.2: Detail of the True HEPA filter, capable of removing 99.97% of airborne particles as small as 0.3 microns.

Image 2.3: Detail of the Activated Carbon filter, designed for effective absorption of household odors.
3. Compatibility
These replacement filters are specifically designed to be compatible with the COLZER KJ800 Air Purifier. Ensure your air purifier model matches to guarantee proper fit and performance.

Image 3.1: HOMFILBIT replacement filter confirming compatibility with COLZER KJ800 Air Purifier.
4. Package Contents
Each package contains:
- 2 x HOMFILBIT 3-in-1 Composite Replacement Filters for COLZER KJ800
5. Safety Information
- Always unplug the air purifier from the power outlet before attempting to replace filters or perform any maintenance.
- Do not wash or reuse the filters. They are designed for single-use and should be replaced when dirty.
- Keep filters out of reach of children and pets.
- Dispose of used filters according to local regulations.
6. Setup and Installation
Follow these steps to replace the filters in your COLZER KJ800 Air Purifier:
- Power Off and Unplug: Ensure the air purifier is turned off and unplugged from the power outlet to prevent electrical hazards.
- Locate Filter Compartment: Refer to your COLZER KJ800 Air Purifier's user manual to locate and open the filter compartment. This is typically on the back or side of the unit.
- Remove Old Filters: Carefully remove the used filters. It is recommended to place them directly into a trash bag to contain dust and allergens.
- Unpack New Filters: Remove the new HOMFILBIT replacement filters from their protective plastic packaging.
- Insert New Filters: Insert the new filters into the air purifier, ensuring they are oriented correctly. Follow any directional arrows on the filter or within the air purifier's compartment.
- Close Compartment: Securely close the filter compartment door or cover.
- Restore Power: Plug the air purifier back into the power outlet and turn it on.
- Reset Filter Indicator: If your air purifier has a filter replacement indicator, follow the manufacturer's instructions to reset it. This usually involves pressing and holding a specific button for a few seconds.
6.1 Filter Replacement Demonstration
For a visual guide on replacing air purifier filters, please watch the following videos:
Video 6.1: A short demonstration showing the replacement process for KJ800 Air Purifier filters.
Video 6.2: A general guide on how to replace air purifier filters, demonstrating common steps.
7. Operating Principles
The HOMFILBIT 3-in-1 composite filter works by drawing in ambient air and passing it through its multiple layers:
- Air first passes through the Pre-filter, which traps larger airborne particles.
- Next, the air moves through the Activated Carbon Filter, where gases and odors are adsorbed.
- Finally, the True HEPA Filter captures microscopic particles, releasing cleaner air back into the room.
8. Maintenance
To ensure continuous high performance of your air purifier, it is recommended to replace the filters every 3 to 6 months. This timeframe may vary depending on air quality, usage frequency, and environmental factors.

Image 8.1: Recommended filter replacement interval of 3-6 months for optimal performance.
8.1 Tips for Optimal Performance:
- Check your air purifier's filter indicator light regularly.
- Avoid operating the air purifier without filters installed.
- Do not attempt to clean the HEPA or activated carbon layers with water or vacuum, as this can damage the filter media.
9. Troubleshooting
- Filter Does Not Fit: Double-check that you have purchased the correct replacement filter model (COLZER KJ800). Ensure the filter is oriented correctly according to the air purifier's instructions. If the filter is genuinely too small or large, contact customer support.
- Unusual Odor After Replacement: A new filter, especially an activated carbon filter, might emit a slight, temporary odor upon initial use. This should dissipate within a few hours of operation. If the odor persists or is strong and unpleasant, ensure the filter was properly unpacked and is not damaged. Contact customer support if the issue continues.
- Air Purifier Not Functioning After Replacement: Ensure the filter compartment is securely closed. Many air purifiers have a safety switch that prevents operation if the compartment is open. Also, verify the unit is properly plugged in and the filter reset indicator (if any) has been cleared.
10. Specifications
| Attribute | Detail |
|---|---|
| Brand | HOMFILBIT |
| Model Compatibility | COLZER KJ800 Air Purifier |
| Filter Type | 3-in-1 Composite Filter (Pre-filter, Activated Carbon, True HEPA) |
| Material (Pre-filter) | Polyester |
| Material (Activated Carbon) | Activated Carbon |
| Material (True HEPA) | Polypropylene |
| Item Weight | 5.99 pounds |
| Package Dimensions | 21 x 11.5 x 3.5 inches |
| Part Number | BY-1444 |
| Unit Count | 2.0 Count |
| Recommended Replacement | Every 3-6 months |
11. Warranty and Customer Support
For any questions regarding your HOMFILBIT replacement filters, including installation, performance, or troubleshooting, please contact our customer service team. We are committed to providing support and ensuring your satisfaction.
Please refer to your purchase documentation or the seller's information for specific warranty details and contact methods.
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