Description
The MRCOOL DIY® 5th Generation 25 ft. Pre-Charged Line Set is the standard line length for 6,000 BTU mini split air handlers. Featuring 1/4″ liquid and 3/8″ suction lines, this set is pre-charged with R-454B refrigerant and uses MRCOOL’s patented Quick Connect fittings to ensure a safe, tool-free installation without the need for vacuum pumps or gauges.
Built for performance, flexibility, and ease of use, this 25 ft. line set is ideal for MRCOOL 5th Gen single-zone systems with 6K heads or multi-zone systems where one of the zones includes a 6,000 BTU air handler.
🔧 Key Features
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Length: 25 feet – standard length for most mini split installs
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Line Sizes: 1/4″ liquid line x 3/8″ suction line – tailored for 6K indoor units
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Pre-Charged with R-454B – Environmentally friendly refrigerant sealed at the factory
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Quick Connect Fittings – Designed for easy, leak-free DIY installation
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Durable & Flexible – White UV-resistant sleeve with insulated copper tubing
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System Compatibility:
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MRCOOL DIY® 5th Gen 6K single-zone systems
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MRCOOL Multi-Zone DIY Systems: Multi2-18K, Multi3-27K, Multi4-36K, Multi5-48K
(Ensure line set size matches indoor air handler BTU rating in multi-zone installs)
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✅ Installation Notes
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This is the standard line set length included with most 6K single-zone systems.
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Need more length? Use couplers and extended control wire (Pro Cable sold separately).
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Follow MRCOOL installation instructions for torque values and setup guidance to preserve your warranty.
