Lennox 90X53 – Cerroset 406802508139 is a factory-insulated refrigerant line set designed for ductless and mini-split HVAC systems. This pre-paired copper lineset includes a 1/4 inch liquid line and a 3/8 inch suction line, supplied in a 25 foot length to support common residential mini-split installations. The black UV-resistant insulation helps protect against weather exposure while improving system efficiency and preventing condensation.

The lineset is manufactured from high-quality refrigeration-grade copper and comes pre-flared with flare nuts, allowing for faster installation and secure, leak-resistant connections without additional field flaring. It is suitable for use with most single-zone and multi-zone ductless heat pump and air conditioning systems that require a 1/4 inch by 3/8 inch line configuration.

This Cerroset insulated lineset is ideal for professional HVAC installers looking for a reliable, time-saving solution that meets OEM installation standards. Common applications include wall-mounted, ceiling cassette, and concealed duct mini-split systems.

 

Key features:

• 1/4 inch liquid line x 3/8 inch suction line configuration
• 25 foot total length
• Pre-insulated black UV-resistant insulation
• Refrigeration-grade copper tubing
• Factory flared ends with flare nuts included
• Designed for ductless and mini-split HVAC systems

 

Typical applications:

• Ductless mini-split air conditioners
• Mini-split heat pump systems
• Single-zone and multi-zone installations