Lennox Healthy Climate PureAir PCO-20C MERV 10 replacement filter - 21" x 26" x 4" - Fits the larger PCO-20C PureAir unit. The Lennox Healthy Climate PureAir replacement furnace filter uses a Merv 10 pleated filter to capture particles down to 0.3 micron. In most home environments, this filter only needs to be replaced every 6 months.

The PCO-20C MERV 10 Healthy Climate PureAir Air Purification System requires that you change the UVA Lamps, the Filter, and the Metal Mesh Insert every year.

For the MERV 10 annual maintenance kit you will want to order the X8348 Maintenance Kit available for your Lennox PUREAIR Air Purification System - PCO-20C!! Click here to go to the X8348 Lennox Maintenance Kit

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Click Here for the Lennox PureAir Product Brochure

Click Here for the Lennox PureAir Homeowner Manual

Click Here for Detailed Installation Instructions

Click Here for Lennox PureAir Product Engineering Data Sheet

The PureAir Air Purification system uses Photocatalytic Oxidation process for removing today's most common household pollutants.  It is far and away the "Best" system for attacking all three classes of contaminants - particles, bioaerosols, and odors/chemicals. The PureAir system removes 75% of particles down to 0.3 micron, 60% of bioaerosols down to 0.3 micron, and it removes odors and destroys 50% of chemicals wihin a 24-hour period. According to Lennox, the PureAir system "cleanes the air in your home better than any other system you can buy."