Lennox 56N70 – Cerroset 614802500009 is a high-quality insulated copper lineset designed for reliable refrigerant flow in residential and light commercial HVAC applications. This standard insulated lineset features precision-manufactured copper tubing with factory-applied insulation, helping maintain system efficiency while reducing condensation and energy loss during operation.
Manufactured by Cerroset, this lineset includes a 3/8 inch liquid line paired with a 7/8 inch suction line, each built with a 3/8 inch insulation wall thickness. The 25-foot length provides flexibility for a wide range of installation layouts, while the plain (uncapped) ends allow for professional field fitting and brazing. The black insulation jacket offers added durability and protection in exposed or attic installations.
This lineset is commonly used with Lennox air conditioners and heat pumps and meets industry standards for HVAC refrigerant piping. It is suitable for new system installations or replacement applications where dependable insulation and consistent copper quality are required.
Key features:
• Lennox part number: 56N70
• Manufacturer number: Cerroset 614802500009
• Line sizes: 3/8 inch liquid line x 7/8 inch suction line
• Insulation thickness: 3/8 inch wall
• Length: 25 feet
• Standard insulated copper tubing
• Plain ends for professional installation
• Black insulation for durability and thermal performance
Applications:
• Residential air conditioning systems
• Heat pump installations
• HVAC replacement or retrofit projects
• Compatible with many Lennox systems requiring 3/8" x 7/8" linesets