White-Rodgers F825-0262 Prefilter

The White-Rodgers F825-0262 Prefilter is a critical component for maintaining the electrostatic field and protecting the collecting cells within TTW-20 and TTW2000 electronic air cleaners. Designed to capture large airborne particulates before they reach the high-voltage section, this aluminum mesh filter ensures the system operates at its peak 2000 CFM capacity without premature loading. As a veteran-grade HVAC filter replacement, it features a durable aluminum frame and a multi-layered expanded metal weave for maximum surface area and minimal static pressure.

For field technicians and contractors, ensuring the correct fit is essential; this OEM prefilter measures precisely 25-1/2" x 22-1/4" x 5/16". Regular use of a genuine White-Rodgers air cleaner part prevents debris from shorting out the ionizer wires, extending the service life of the primary electronic cells. When performing preventative HVAC maintenance, these filters can be washed and reused, though they must be completely dry before re-energizing the power pack to avoid arcing.

• High-Velocity Compatibility: Specifically engineered for TTW-20 series systems rated for 2000 CFM airflow.
• Heavy-Duty Construction: Features a reinforced aluminum frame and expanded mesh to withstand high-pressure industrial and residential air handlers.
• Washable Design: Reduces long-term HVAC maintenance cost by allowing for repeated cleaning instead of disposable media replacement.
• System Protection: Acts as the first line of defense, capturing lint, hair, and large dust to prevent fouling of the electronic collecting cells.

• How often should I clean the F825-0262? In high-traffic environments, inspect the prefilter monthly. If the "Operating" light on the TTW-20 flickers, it is often a sign of heavy loading or moisture on the mesh.
• Can I use a pressure washer on the aluminum weave? No. High pressure can flatten the woven foil. It is recommended to soak the filter in a tub with a non-acidic detergent like CalClean to maintain the integrity of the mesh.
• What happens if I run the unit without the prefilter? Running without it allows large debris to bypass the first stage, which typically results in frequent snapping/arcing and can cause permanent damage to the ionizer section.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.