Lennox X7786 (DiversiTech DAD304S) Liquid Line Filter Drier is a high-capacity HVAC filtration component designed to protect air conditioning and heat pump systems from moisture, acids, and solid contaminants. With a 30 cubic inch desiccant core and durable steel construction, this liquid line filter drier helps ensure long-term system reliability and optimal refrigerant flow in higher-tonnage applications.

Engineered for 7–9 ton HVAC systems, the X7786 features 1/2 inch ODF solder connections for secure, leak-free installation in the liquid refrigerant line. By effectively removing harmful contaminants from the refrigerant circuit, this filter drier helps prevent compressor damage, internal corrosion, and acid formation, extending the overall life of the system.

This model is well suited for residential and light commercial installations where higher refrigerant volumes require increased moisture and acid removal capacity. It is commonly installed during new system installations, major repairs, compressor replacements, or refrigerant line service to maintain clean and stable system operation.

Key features and benefits:

• High-capacity 30 cu in desiccant core for superior moisture and acid removal
• Designed for 7–9 ton air conditioning and heat pump systems
• 1/2 inch ODF solder connections for reliable liquid line installation
• Heavy-duty steel shell for durability and pressure resistance
• Helps protect compressors and critical HVAC components
• Improves system efficiency and long-term performance

Typical applications:

• Residential and light commercial air conditioning systems
• Heat pump systems requiring high-capacity liquid line filtration
• Compressor replacements and refrigerant system service
• New HVAC installations and major system retrofits

Specifications overview:

• Catalog number: X7786
• Manufacturer reference: DiversiTech DAD304S
• Type: Liquid line filter drier
• Desiccant capacity: 30 cubic inches
• Connection size: 1/2 inch ODF solder
• System capacity: 7–9 tons

The Lennox X7786 liquid line filter drier is a dependable choice for contractors and technicians looking to protect HVAC systems from moisture-related failures and contamination issues. Designed for demanding applications, it delivers consistent performance and long-term system protection when installed as part of a properly serviced refrigerant circuit.