Description
The MRCOOL DIY® 5th Generation 16 ft. Pre-Charged Line Set is the perfect solution for shorter HVAC installations involving 9,000 BTU, 12,000 BTU, or 18,000 BTU MRCOOL indoor units. With 1/4″ liquid and 1/2″ suction lines, this compact line set is pre-charged with eco-friendly R-454B refrigerant and sealed with MRCOOL’s exclusive Quick Connect fittings — eliminating the need for vacuum pumps, gauges, or HVAC licenses.
Whether you’re setting up a single-zone DIY mini split or connecting to a multi-zone system, this 16 ft. line set provides a clean, secure, and reliable installation for close-proximity condenser-to-air handler configurations.
🔧 Key Features
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Length: 16 feet – ideal for tight installs or wall-mounted outdoor units
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Line Sizes: 1/4″ liquid x 1/2″ suction – built for 9K, 12K, and 18K BTU indoor units
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Pre-Charged with R-454B Refrigerant – No field charging or vacuuming needed
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Quick Connect Fittings – Patented DIY connection system for leak-free installation
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Durable Insulation – UV-resistant white sleeve with insulated copper tubing
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System Compatibility:
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MRCOOL DIY® 5th Gen single-zone 9K, 12K & 18K units
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MRCOOL Multi-Zone Condensers: Multi2-18K, Multi3-27K, Multi4-36K, Multi5-48K
(Must match line set size to air handler BTU rating for multi-zone applications)
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✅ Installation Notes
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Ideal when the indoor and outdoor units are located in close proximity
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For runs longer than 25 ft., use line set couplers and longer Pro Cable (sold separately)
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Ensure all connections follow MRCOOL’s installation guidelines and torque specifications
