Introduction
The DAODEFUL M8R-FLH Replacement Filter is designed to maintain the air purification performance of your compatible Xiaomi Mi Air Purifier. This filter features a 3-stage filtration system, including a pre-filter, a True HEPA layer, and an activated carbon layer, to effectively capture various airborne particles and odors. This manual provides essential information for installation, operation, maintenance, and troubleshooting to ensure optimal performance and air quality.

Image: The M8R-FLH filter shown in contexts of pet owners, smokers, and allergy sufferers, highlighting its air purification capabilities.
Compatibility
The M8R-FLH replacement filter is compatible with the following Xiaomi Mi Air Purifier models:
- Xiaomi Mi Air Purifier 3C
- Xiaomi Mi Air Purifier 3H
- Xiaomi Mi Air Purifier 3
- Xiaomi Mi Air Purifier 2C
- Xiaomi Mi Air Purifier 2H
- Xiaomi Mi Air Purifier 2S
- Xiaomi Mi Air Purifier Pro

Image: Visual confirmation of the M8R-FLH filter's compatibility with various Xiaomi Mi Air Purifier models.
Product Components
Each package of the DAODEFUL M8R-FLH Replacement Filter includes:
- Two (2) M8R-FLH Replacement Filters

Image: A view of the product packaging, showing two M8R-FLH replacement filters.
Setup and Installation
The M8R-FLH filter is designed for tool-free installation. Follow these general steps to replace your air purifier filter:
- Power Off: Ensure your Xiaomi Mi Air Purifier is turned off and unplugged from the power outlet before beginning the replacement process.
- Access Filter Compartment: Refer to your air purifier's specific user manual for instructions on how to open the filter compartment. This typically involves removing the back or bottom panel.
- Remove Old Filter: Carefully remove the used filter from the compartment. Dispose of the old filter according to local regulations.
- Insert New Filter: Unpack the new DAODEFUL M8R-FLH filter. Insert it into the filter compartment, ensuring it is seated correctly and securely. The filter is designed to fit in one orientation.
- Close Compartment: Close the filter compartment door or panel until it clicks into place.
- Power On: Plug in and power on your air purifier. Reset the filter life indicator on your air purifier as per its instructions.
Operating Principles (3-Stage Filtration)
The DAODEFUL M8R-FLH filter utilizes a comprehensive 3-stage filtration system to purify the air:
- Pre-filter: This initial layer captures larger particles such as dust, hair, and pet dander, extending the life of the subsequent filters.
- True HEPA Filter: The high-efficiency particulate air (HEPA) layer is designed to capture microscopic particles, including pollen, mold spores, and fine dust, down to 0.3 microns with high efficiency.
- Activated Carbon Filter: This layer is composed of granular activated carbon, which effectively absorbs various odors, volatile organic compounds (VOCs), smoke, and cooking smells, providing fresher air.

Image: A detailed breakdown of the filter's three layers: pre-filter, main filter, and activated carbon filter.

Image: Focus on the activated carbon component, illustrating its function in odor absorption.

Image: The filter actively capturing various airborne pollutants like pet dander, dust, smoke, and pollen.
Maintenance
Regular filter replacement is crucial for maintaining the efficiency and effectiveness of your air purifier. The DAODEFUL M8R-FLH filter is designed for a lifespan of approximately 6 to 8 months under normal operating conditions. This duration may vary based on air quality, usage frequency, and environmental factors.
It is recommended to replace the filter when your air purifier indicates a filter change is needed, or if you notice a decrease in air purification performance or increased noise from the unit.
Troubleshooting
| Issue | Possible Cause | Solution |
|---|---|---|
| Filter does not fit correctly | Incorrect model compatibility. | Verify your air purifier model against the compatible models listed in this manual. Ensure the filter is inserted in the correct orientation. |
| Reduced airflow or purification efficiency | Clogged or expired filter. | Check the filter life indicator on your air purifier. Replace the filter if it has reached its recommended lifespan or appears heavily soiled. |
| Unusual odors persist | Activated carbon layer saturation. | Replace the filter. The activated carbon layer has a finite capacity for odor absorption. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | M8R-FLH |
| Brand | DAODEFUL |
| Filtration Type | 3-Stage (Pre-filter, True HEPA, Activated Carbon) |
| Compatible Devices | Xiaomi Mi Air Purifier 3C, 3H, 3, 2C, 2H, 2S, Pro |
| Material Type | Pre-filter, filter, activated carbon filter |
| Product Dimensions | 7.7 x 11.4 x 7.7 inches (19.56 cm x 28.96 cm x 19.56 cm) |
| Item Weight | 4.13 pounds (1.87 kg) |
| Color | Black |
| Number of Items | 2 (per pack) |
Warranty Information
Specific warranty details for the DAODEFUL M8R-FLH Replacement Filter are not provided in this manual. For information regarding product warranty, please refer to the product packaging or contact DAODEFUL customer support directly.
Customer Support
For any questions, concerns, or assistance with your DAODEFUL M8R-FLH Replacement Filter, please contact our responsive customer support team. Contact information can typically be found on the product packaging or the retailer's website where the product was purchased.





