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MRCOOL DIY 5th Gen - 3/8" x 5/8" Pre-Charged Quick Connect Line Set with Line Set Length Options (24K & 36K Indoor - R454B)

by MRCOOL
SKU DIY16-3858-O
Save up to $238.00 Save $128.00
Original price $399.00
Original price $399.00 - Original price $900.00
Original price $399.00
Current price $271.00
$271.00 - $662.00
Current price $271.00
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MRCOOL DIY 5th Gen - 3/8" x 5/8" Pre-Charged Quick Connect Line Set with Line Set Length Options (24K & 36K Indoor - R454B)

LINE SET LENGTH:

  • 16 ft. (DIY16-3858-O)
  • 25 ft. with DIY Pro Cable (DIY25-3858C-O)
  • 35 ft. with DIY Pro Cable (DIY35-3858C-O)
  • 50 ft. with DIY Pro Cable (DIY50-3858C-O)

Upgrade your MRCOOL DIY® 5th Gen mini-split system with a Pre-Charged Quick Connect Line Set, specifically engineered for compatibility with 24K and 36K indoor air handler units. Each line set is pre-charged with eco-friendly R-454B refrigerant and designed with 3/8" liquid and 5/8" suction lines, ensuring optimal performance and refrigerant flow.

Equipped with MRCOOL’s innovative Quick Connect fittings, these line sets make installation truly DIY-friendly — no vacuuming, charging, or special HVAC tools required. Whether you’re a homeowner or contractor, the setup is simple, fast, and reliable.

FEATURES:

    • Pre-Charged with R-454B Refrigerant
      Each line set comes pre-loaded with eco-friendly refrigerant to simplify installation.

    • Compatible with MRCOOL 5th Gen 24K & 36K Indoor Units
      Designed for 3/8” liquid and 5/8” suction line configurations.

    • Quick Connect Fittings
      Allows for fast, tool-free installation — no special certifications needed.

    • Durable & Kink-Resistant Construction
      Built with high-quality materials for long-lasting, leak-proof performance.

    • Clean Professional Appearance
      White finish with bronze/copper metallic fittings blends seamlessly with your setup.

    • Includes DIY Pro Cable (select models)
      Models from 25 ft. and up include the MRCOOL DIY Pro Cable for added convenience and safety.

    NOTE: The line set is a required component for installing MRCOOL DIY® mini-split systems.

    SPECIFICATIONS:

    Series 5th Gen DIY Line Set - R-454B
    Equipment Type R-454B Charged Line Set
    Compatible Indoor Units 24K & 36K (5th Gen)
    Line Set Length 16 ft. | 25 ft. | 35 ft. | 50 ft. 
    Liquid Line Size 3/8"
    Suction Line Size 5/8"
    Line Set Fitting Type Quick-Connection
    Refrigerant Type R-454B
    Refrigerant Volume 2.12 oz | 2.12 oz | 4.66 oz | 10.02 oz
    Net Weight 15.9 lbs | 14.1 lbs | 18.3 lbs | 31.3 lbs
    Contains Chemicals Yes
    Contains Aerosol Yes
    Contains Compressed Gas Yes
    Proposition 65 Warning Yes
    Restricted States GU, PR, VI
    Batteries Required No
    Contains Electronics No