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Lennox Y4591 PureAir Healthy Climate PCO-20C 1st Generation MERV 16 Upgrade Kit with Insert. If your ballast has gone bad and you have previously replaced it for PCO-20C PureAir, this will be the upgrade kit for you!
The PureAir Air Purification system uses Photocatalytic Oxidation process for removing today's most common household pollutants.

According to Lennox, the PureAir system "cleans the air in your home better than any other system you can buy."

The Y4591 kit needs to be replaced annually. Filter dimensions: 21" x 26" x 4" (actual filter size: 21.15" x 25.90" x 3.93")

This kit is for the PureAir PCO-20C unit and contains all replaceable components in a single package, offering significant savings over purchase of the individual components.

The Y4591 Kit includes:

• 2 PureAir bulbs, X8794
• MERV 16 filter X6669
• Metal Mesh Insert 75X66*

*NOTE! This Y4591 new generation upgrade kit features a mesh insert that is collapsed to 1" thick for shipping. Click Here to review the instructions for expanding the 1" to the full 2" width.

If your ballast has gone bad and you don't know what to do or have any other questions, please call our customer experience team at 888-623-4678 or Click Here to email us.