Cambridge 312636 Refrigerant Line Set 50 Ft 3/8x3/4 in

Product Description

The CAMBRIDGE 312636 is a pre-insulated refrigerant line set designed for split-system air conditioning and heat pump installations. It includes a 3/8-inch liquid line and a 3/4-inch suction line, each wrapped in 1/2-inch elastomeric insulation, and runs 50 feet in total length. The elastomeric insulation reduces condensation on the suction line and limits heat gain on the liquid line, helping maintain system efficiency across the refrigerant circuit. This line set is a field-ready solution that speeds up rough-in on new installs and changeouts, reducing the time spent measuring, cutting, and insulating individual lines on the job.

This line set is suited for residential and light-commercial split-system HVAC applications where the indoor air handler and outdoor condensing unit require a pre-fabricated refrigerant circuit connection. A 50-foot run covers most standard single-story and two-story residential installations. It is commonly installed by licensed HVAC technicians during new equipment commissioning or system replacements where existing lineset routing matches these sizes.

Key Features

• 50-foot length covers typical residential split-system runs without field splicing
• 3/8-inch liquid line sized for standard residential condensing unit connections
• 3/4-inch suction line accommodates common residential evaporator coil fittings
• 1/2-inch elastomeric insulation limits condensation and heat gain along the suction line
• Pre-insulated construction reduces field labor compared to insulating bare copper on-site

Compatibility

Designed as an OEM-style replacement or new-installation line set for residential split-system air conditioners and heat pumps requiring a 3/8-inch liquid line and 3/4-inch suction line configuration.

Installation Notes

Installation should be performed by a licensed HVAC technician holding the appropriate EPA Section 608 refrigerant handling certification. Shut down and recover all refrigerant from any existing system before disconnecting old line sets. Verify that the line set sizing matches the equipment manufacturer's specifications for both the condensing unit and evaporator coil before brazing connections. Support the line set at regular intervals per local mechanical code requirements to prevent sagging and vibration stress at fittings.

Technical Specifications

• Length: 50 feet
• Liquid Line Diameter: 3/8 inches
• Suction Line Diameter: 3/4 inches
• Insulation Thickness: 1/2 inches
• Insulation Material: Elastomeric

Standard Information

• Brand: CAMBRIDGE
• Manufacturer Part Number: 312636