Lennox replacement air filters

Caliper makes replacement air filters that fit Lennox furnaces, air handlers and AC systems. What matters is the size of your filter slot, not the brand on the unit, so you'll get an exact fit either way.

Find your size

The quickest way: check the edge of the filter that's in there now. The size is printed on the frame, like 16x25x1. You can also take a photo of your old filter, or of the label on your Lennox unit, on our home page and we'll read it for you.

By model number

CBA25UHV-018 CBA25UHV-024 CBA25UHV-030 CBA25UHV-036 CBA25UHV-042 CBA25UHV-048 CBA25UHV-060 CBA38MV-018 CBA38MV-030 CBA38MV-036 CBA38MV-042 CBA38MV-048 CBA38MV-060 CBX26UH-018 CBX26UH-024 CBX26UH-030 CBX26UH-036 CBX26UH-037 CBX26UH-042 CBX26UH-048 CBX26UH-060 CBX32M-018 CBX32M-030 CBX32M-036 CBX32M-042 CBX32M-048 CBX32M-060 CBX32MV-018 CBX32MV-024 CBX32MV-036 CBX32MV-048 CBX32MV-060 CBX32MV-068 CBX40UHV-024 CBX40UHV-030 CBX40UHV-036 CBX40UHV-042 CBX40UHV-048 CBX40UHV-060 ML180UH045E36A ML180UH045P24A ML180UH045P36A ML180UH045XE36A ML180UH045XP36A ML180UH070E36A ML180UH070E36B ML180UH070P24A ML180UH070P36A ML180UH070XE36A ML180UH070XE36B ML180UH070XP36A ML180UH090E48B ML180UH090E60C ML180UH090P36B ML180UH090P48B ML180UH090XE48B ML180UH090XP48B ML180UH110E60C ML180UH110P48C ML180UH110P60C ML180UH110XE60C ML180UH110XP60C ML180UH135E60D ML180UH135P60D

Where the filter lives

On most Lennox systems, the filter sits in a slot next to the blower, in a wall or ceiling return grille, or in a separate filter cabinet. Cabinets usually take thicker 4" or 5" filters, which last longer.

Common sizes in homes

Don't see yours? See every size, or order a custom size.

Caliper isn't affiliated with or endorsed by Lennox. We use the name only to help you find a filter that fits your equipment.