Description
Lennox 12K40 Filter Drier Overview
The Lennox 12K40 is a liquid line filter drier engineered for use with R-410A refrigerant systems. With a 16 cubic inch capacity and a 3/8″ ODF connection, this drier is designed to remove moisture, acid, and particulate contaminants from the refrigerant circuit — protecting compressors, expansion devices, and other critical components from damage and premature failure.
Key Features
- Compatible with R-410A refrigerant
- 3/8″ ODF sweat connection for easy field installation
- 16 cubic inch desiccant capacity for effective moisture and acid removal
- Helps protect system components from contamination-related damage
- Genuine Lennox OEM replacement part (SKU: 12K40)
- Ideal for residential and light commercial split-system air conditioning applications
Why Use a Filter Drier?
Moisture and contaminants in a refrigerant system can cause acid formation, copper plating, and compressor burnout. Installing a properly sized filter drier — like the Lennox 12K40 — is a critical step during new installations, refrigerant recharges, or after any system repair that exposes the refrigerant circuit to the atmosphere.
Specifications
- Brand: Lennox
- Part Number / SKU: 12K40
- Refrigerant Type: R-410A
- Connection Size: 3/8″ ODF
- Desiccant Capacity: 16 cubic inches
- Application: Liquid line filter drier
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