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The Lennox X8790 MERV 16 Air Filter Replacement is a replacement air filter for the Lennox PCO14-23 PureAir Air Filtration System. This furnace filter measures approximately 20x21x5 and features a MERV 16 rating. A higher MERV rating results in higher filtration quality. With this pleated filter you will be able to capture dust, dirt, pollen, and other pollutants as small as 0.3 microns. This PureAir filter is genuine Lennox product and should be replaced every 6 to 12 months for optimal results.
Lennox X8790 MERV 16 Air Filter Replacement Specifications:
- OEM part
- MERV 16 rating
- Replace every 6-12 months
- Approximate dimensions: 20x20 5/8x4 3/8
- Traps airborne particles as small as 0.3 microns
The Lennox X8790 is the correct replacement filter for the following air cleaner models:
- Lennox PCO14-23
Compatible Models:
The Lennox X8790 PCO14-23 MERV 16 Air Filter Replacement is correct replacement for the following model numbers:

Customer Reviews:
Filter helps keep dust down in the house & helps keep the air cleaner. We rely on the filter to help keep allergens out of the house.
Collected by Trustpilot.comThis is a unique product that we can’t buy locally. Filters fast has been our go to since we purchased this system.
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