BUYFILTERSONLINE / SFC EL - ELECTROSTATIC LIFETIME WASHABLE
Electrostatic Air Filter User Manual
Model: EL - ELECTROSTATIC LIFETIME WASHABLE
Brand: BUYFILTERSONLINE / SFC
Introduction
This manual provides essential information for the proper installation, operation, and maintenance of your BUYFILTERSONLINE / SFC Electrostatic Air Filter. This filter is designed for use in home furnace or A/C systems to improve indoor air quality by capturing airborne particles.
The filter features a non-rusting aluminum frame and a multi-stage filtration system, including expanded aluminum and electrostatic filter media. It is a washable and permanent solution, designed for long-term use.
Product Features
- Electrostatic Filtration: Utilizes air flow and static electricity to capture airborne particles without electrical connections.
- Durable Construction: Features a non-rusting aluminum frame, unlike galvanized steel alternatives.
- Washable & Reusable: Designed for thousands of washings, offering a permanent filtration solution.
- Multi-Stage Filtration: 1-inch filters feature 4 layers of expanded aluminum and 2 layers of electrostatic media (6-stage total). 2-inch filters feature 5 layers of expanded aluminum and 2 layers of electrostatic media (7-stage total).
- Low Airflow Resistance: Engineered to meet manufacturer specifications for minimal resistance to air flow.
Setup and Installation
Before installation, ensure the filter dimensions match your furnace or A/C unit's requirements. The actual size of the filter is approximately 3/8" less than the stated nominal dimensions, which is standard for most filters.
- Remove Old Filter: Carefully remove the existing air filter from your furnace or A/C unit. Note the direction of the airflow arrow on the old filter.
- Inspect Unit: Check the filter slot for any debris or obstructions.
- Orient New Filter: Locate the airflow arrow on your new electrostatic filter. This arrow must point in the direction of the airflow, typically towards the furnace/air handler.
- Insert Filter: Slide the new filter into the designated slot. Ensure it fits snugly without forcing it. If the fit is tight due to screw heads within the frame, slight adjustment of the filter frame may be necessary.

Image: Front view of the Electrostatic Air Filter, showing its aluminum frame and mesh filtration media. This filter is designed to be inserted into a furnace or air conditioning unit.
Operating Instructions
Once installed, the electrostatic air filter operates automatically with your HVAC system. No electrical connections or modifications to your furnace are required. The air flow from your home ventilation system charges the filter media, drawing airborne particles into it.
For optimal performance, ensure your HVAC system is running as per its normal schedule. The filter continuously works to improve air quality by capturing dust, pollen, pet dander, and other airborne irritants.
Maintenance and Cleaning
Regular cleaning is crucial for maintaining the efficiency and longevity of your electrostatic air filter. It is recommended to clean the filter every 4 to 6 weeks, or more frequently depending on the dust levels in your home.
- Removal: Turn off your furnace or A/C unit. Carefully remove the filter from its slot.
- Initial Dust Removal: Use a vacuum cleaner to remove loose dust and debris from the filter surface.
- Rinsing: Rinse the filter thoroughly with water. Always rinse in the opposite direction of the airflow that the filter was installed. This helps to dislodge trapped particles.
- Deep Cleaning (Optional): For stubborn dust or contaminants, a light cleaner such as dish soap or laundry soap can be used. Apply the soap, gently scrub if necessary, and then rinse the filter very well to remove all soap residue.
- Drying: Allow the filter to dry completely before reinstallation. Do not leave the filter in direct sunlight or high heat situations for extended periods, as this may affect its integrity.
- Reinstallation: Once dry, reinstall the filter, ensuring the airflow arrow points in the correct direction.

Image: A close-up view of the filter's internal mesh layers, highlighting the intricate design that captures airborne particles. Regular cleaning of these layers is essential for filter performance.

Image: Side angle view of the electrostatic air filter, showcasing the thickness and robust aluminum frame. This perspective helps in understanding the multi-layer design.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Reduced Airflow / Whistling Sound | Filter is dirty and clogged. | Clean the filter thoroughly as per maintenance instructions. Ensure it is completely dry before reinstallation. |
| Filter does not fit properly. | Incorrect size ordered, or obstructions in the filter slot. | Verify the filter dimensions against your unit's requirements. Check for internal obstructions like screw heads and adjust filter frame slightly if needed. |
| Filter appears ineffective (e.g., no visible dirt after cleaning). | May indicate very low dust levels, or improper installation/airflow direction. | Ensure the airflow arrow is correctly oriented. While visible dirt may not always be present, the filter is designed to capture microscopic particles. Continue regular cleaning. |
Specifications
- Model: EL - ELECTROSTATIC LIFETIME WASHABLE
- Material: Aluminum frame, polypropylene grid, electrostatic filter media
- Nominal Dimensions: 12 x 12 x 1 inches (Actual size is approximately 3/8" less than stated dimensions)
- Filtration Stages (1" filter): 6-stage (4 layers expanded aluminum, 2 layers electrostatic media)
- Filtration Stages (2" filter): 7-stage (5 layers expanded aluminum, 2 layers electrostatic media)
- Compatibility: Designed for home furnace and A/C use
- UPC: 617375074583
Warranty Information
This product is warranted to be FREE FROM DEFECTS WITH REGARDS TO ALL QUALITY OF MATERIALS AND WORKMANSHIP!
For specific warranty claims or questions, please contact BUYFILTERSONLINE / SFC directly.
Support and Contact
For further assistance, technical support, or inquiries regarding your electrostatic air filter, please refer to the contact information provided by BUYFILTERSONLINE / SFC at the point of purchase or on their official website.
Note: Always refer to your HVAC system's manual for specific filter compatibility and installation guidelines.
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