1. Product Overview
This Hermitlux carbon filter is designed as a replacement component for compatible range hood models, specifically HMX-USF39A76-AC and HMX-UWF39A76-AC. It is essential for converting your range hood to a ductless (recirculating) setup, effectively removing cooking odors and grease from the air before recirculating it back into your kitchen. The filter is constructed from durable two-layer aluminum mesh and activated carbon cotton to ensure efficient air purification.
2. Installation Instructions
Installing the Hermitlux carbon filter is a straightforward process that typically requires no special tools or prior repair experience. Ensure your range hood is powered off and disconnected from the electrical supply before beginning installation.
- Locate the filter housing within your compatible Hermitlux range hood (models HMX-USF39A76-AC or HMX-UWF39A76-AC).
- Remove any existing filters by disengaging their clips or latches.
- Carefully insert the new Hermitlux carbon filter into the designated slot. Ensure it is seated correctly and securely.
- Engage the clips or latches to hold the filter firmly in place.
- Once the filter is installed, you may reconnect power to your range hood.

This image illustrates the Hermitlux carbon filter and the two range hood models it is designed to fit: HMX-USF39A76-AC and HMX-UWF39A76-AC. The filter is positioned above the hoods, indicating its placement within the appliance.
3. Operating Principles
The carbon filter operates passively as air is drawn through your range hood. The activated carbon within the filter absorbs cooking odors, while the aluminum mesh traps grease particles. This dual-action filtration system ensures that the air recirculated into your kitchen is cleaner and fresher, making it suitable for ductless installations.
4. Maintenance
To maintain optimal performance of your range hood and ensure effective odor and grease removal, regular replacement of the carbon filter is recommended. The lifespan of the filter depends on cooking frequency and type, but generally, it should be replaced every 4 to 6 months.
- Replacement Schedule: Replace the carbon filter every 4-6 months for best results.
- Signs of a Clogged Filter: Reduced odor absorption, persistent cooking smells, or decreased airflow from the range hood can indicate that the filter needs replacement.
- Disposal: Dispose of used filters according to local waste disposal guidelines.
5. Troubleshooting
If you experience issues with your range hood's filtration, consider the following:
- Persistent Odors: If cooking odors are not being effectively removed, the carbon filter may be saturated and require replacement. Refer to the Maintenance section for recommended replacement intervals.
- Reduced Airflow: A significantly clogged carbon filter can restrict airflow. If your range hood's suction seems weaker than usual, inspect the filter and replace it if it appears dirty or heavily used.
- Improper Installation: Ensure the filter is correctly seated and secured within the range hood housing as described in the Installation Instructions. A loose filter may not function optimally.
6. Specifications
| Feature | Detail |
|---|---|
| Brand | Hermitlux |
| Model Number (Filter) | AF-TF39 |
| Compatible Range Hood Models | HMX-USF39A76-AC, HMX-UWF39A76-AC |
| Material | Aluminum Mesh, Activated Carbon Cotton |
| Dimensions (Approximate) | 10.04 inches (Length) x 8.23 inches (Width) x 0.59 inches (Thickness) |
| Items Included | 1 Kitchen Hood Filter |

This diagram provides the precise measurements of the Hermitlux carbon filter. It is 10.04 inches in length, 8.23 inches in width, and 0.59 inches in thickness, ensuring proper fit for compatible range hoods.
7. Customer Support
Should you encounter any issues with your Hermitlux carbon filter or have questions regarding its use, please do not hesitate to contact our customer service department for assistance. Refer to your product packaging or the Hermitlux official website for contact information.