The Lennox 11N29 – Cerroset 618205000009 standard insulated lineset is a professional-grade refrigerant tubing solution designed for reliable performance in residential and light commercial HVAC applications. This 50-foot insulated lineset features a 3/8 inch liquid line paired with a 1-1/8 inch suction line, engineered to support efficient refrigerant flow between indoor and outdoor air conditioning or heat pump components.

Manufactured using high-quality copper tubing, this lineset provides excellent durability, flexibility, and long-term resistance to vibration and thermal cycling. The 1/2 inch wall closed-cell insulation helps minimize energy loss, reduce condensation, and improve overall system efficiency. A tough black exterior jacket adds protection against abrasion, UV exposure, and jobsite wear, making it suitable for both indoor and outdoor installations.

Designed with plain ends, the Lennox 11N29 insulated lineset allows for custom field flaring and precise fitment, giving HVAC professionals maximum installation flexibility. It is compatible with a wide range of Lennox air conditioning and heat pump systems, as well as many other OEM brands that require matching 3/8 inch by 1-1/8 inch refrigerant line configurations.

Ideal for new system installations or replacement applications, this Cerroset insulated lineset delivers consistent performance, dependable insulation, and installer-friendly handling. It is a trusted choice for contractors and homeowners seeking a durable, efficient, and OEM-compatible refrigerant lineset solution.

 

Specifications:

 

Manufacturer: Lennox
Manufacturer Part Number: 11N29
Cerroset Part Number: 618205000009
Lineset Length: 50 ft
Liquid Line Size: 3/8 inch
Suction Line Size: 1-1/8 inch
Insulation Thickness: 1/2 inch
Insulation Type: Closed-cell
Ends: Plain
Jacket Color: Black
Application: Air conditioners and heat pump systems