Copper Insulated HVAC Line Set – 3/8" x 3/4" | 25ft, 35ft, 50ft | For MRCOOL HyperHeat, VersaPro, Universal & Pro-Direct | Professional Installation

Copper Insulated HVAC Line Set – 3/8" x 3/4" (25 ft, 35 ft, 50 ft)

Upgrade or replace your refrigerant lines with this premium copper insulated HVAC line set, designed for non-DIY, traditional professional installation. This line set is perfect for central ducted heating and cooling systems that require reliable, field-ready copper tubing.

• Liquid Line: 3/8"
• Suction Line: 3/4"
• Available Lengths: 25 ft, 35 ft, or 50 ft

Compatible With MRCOOL & Other Major HVAC Brands

This professional-grade line set can be used with:

• MRCOOL HyperHeat central ducted systems
• MRCOOL VersaPro central ducted systems
• MRCOOL Universal Series central ducted systems
• MRCOOL Pro-Direct central ducted systems

It is also compatible with any HVAC brand that uses 3/8" x 3/4" line sizes for central air conditioners and heat pumps.

Multi-Refrigerant Compatible

Built for flexibility in the field, this copper line set is suitable for use with:

• R410A
• R22
• R32
• R454B

Whether you're working with legacy equipment or installing a modern high-efficiency system, this line set is ready for the job.

Non-DIY, Professional Installation Required

These line sets are designed for traditional HVAC installation and are intended for use by licensed professionals only.

• Not flared from the factory
• Will need to be brazed or flared on-site depending on your specific installation requirements
• Always have a licensed HVAC technician handle installation and refrigerant charging

Key Features & Benefits

• High-quality copper insulated line set for central ducted HVAC systems
• Compatible with MRCOOL HyperHeat, VersaPro, Universal, and Pro-Direct
• Works with most major brands using 3/8" x 3/4" line sizes
• Supports multiple refrigerants: R410A, R22, R32, R454B
• Available in 25 ft, 35 ft, and 50 ft lengths for flexible installation
• Ideal for system replacements, upgrades, and new professional installs

Choose MRCOOL DIY Direct for your next installation and enjoy the confidence of buying from the USA's most trusted HVAC dealer.