Lennox X8788 Filter

When you're servicing a PureAir PCO20-28 air purification system, the Lennox X8788 (also designated as X878801) is the required MERV 16 pleated filter for maintaining specified static pressure and filtration efficiency. Measuring a nominal 20x26x5, with actual dimensions of 20" x 25-1/2" x 4-3/8", this Healthy Climate media is engineered to capture over 95% of particles down to 0.3 microns, including bioaerosols, volatile organic compounds (VOCs), and fine dust. This is a critical component of the Lennox X8795 maintenance kit, working alongside the PCO metal insert and UV lamps to provide hospital-grade air cleaning. Replacing this furnace filter ensures the HVAC system maintains 2000 CFM airflow without excessive resistance, protecting the evaporator coil from debris accumulation. As a technician, ensure the actual size matches the cabinet rails before sliding the new cartridge into place to avoid air bypass.

• MERV 16 High-Efficiency Filtration: Captures microscopic particles including smoke, bacteria, and allergens to protect indoor air quality.
• Optimized Pressure Drop: Designed specifically for PureAir cabinets to keep static pressure within equipment tolerances.
• Direct OEM Replacement: Identical to X878801, ensuring a perfect seat in the PCO20-28 housing.
• System Longevity: High-holding capacity reduces the risk of blower motor strain caused by restricted airflow.

• Is the Lennox X8788 the same as the X878801? Yes, these are interchangeable part numbers for the same OEM MERV 16 filter.
• What are the actual dimensions of the 20x26x5 filter? The actual measurements are 20" x 25-1/2" x 4-3/8". Always verify the cabinet clearance before installation.
• Does this filter replace the entire X8795 kit? No, this is the replacement media only. The full kit includes the catalyst and UV bulbs, but the X8788 can be replaced more frequently in high-dust environments.

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.