MRCOOL DIY® 5th Gen 35 ft. 3/8" x 5/8" Pre-Charged Quick Connect Line Set with DIY Pro Cable (for 24K & 36K Indoor Units)

MRCOOL DIY® 5th Gen 35 ft. 3/8" x 5/8" Pre-Charged Quick Connect Line Set with DIY Pro Cable (for 24K & 36K Indoor Units)

Upgrade your MRCOOL system with this 35 ft. DIY® 5th Generation Pre-Charged Line Set, built for easy installation, dependable performance, and total compatibility with 24,000 BTU and 36,000 BTU indoor air handlers. This line set features 3/8" liquid and 5/8" suction lines, pre-filled with eco-friendly R-454B refrigerant, and includes the DIY Pro Cable in matching length for a complete and seamless setup.

Designed for use with MRCOOL DIY 5th Gen single-zone systems and compatible with select multi-zone models, this 35-foot line set is ideal for medium-range installs where 25' isn’t quite enough.

🔧 Key Features

• Line Set Length: 35 feet

• Line Sizes: 3/8" liquid x 5/8" suction – specifically for 24K & 36K indoor units

• Pre-Charged with R-454B – No vacuuming or refrigerant handling required

• Includes 35 ft. DIY Pro Cable – Control wire included for plug-and-play installation

• Quick Connect Fittings – Patented design makes it easy for homeowners and pros alike

• Durable & Weather Resistant – Protected with a white UV-resistant sleeve for a clean, professional appearance

• Compatible with MRCOOL Multi-Zone Condensers:

  • Multi3-18K

  • Multi4-27K

  • Multi5-36K

  • Multi6-48K

  • Multi6-55K
    (When used in multi-zone systems, line set size must match the air handler BTU rating.)

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✅ Installation Notes

• For installs longer than 25 ft., this 35 ft. line set is a perfect fit — no couplers needed.

• Extending beyond 35 ft.? Use MRCOOL coupler kits and longer Pro Cable as needed.

• Be sure to follow MRCOOL torque specs and installation guidelines to maintain system performance and warranty coverage.

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Trust MRCOOL DIY Direct – America’s most trusted source for MRCOOL HVAC systems, parts, accessories, and support. Whether you're replacing an existing line set or setting up a new DIY install, this pre-charged kit makes the job simple, clean, and efficient.