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Mr Cool Coupler for DIY 24k and 36k units

Mr Cool Coupler for DIY 24k and 36k units

SKU DIYCOUPLER-3858K50
$113.59
In stock: 4 available
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Mr Cool Coupler for DIY 24k and 36k units
Product Details
Brand: Mr Cool
Weight: 12.00 lbs

MRCOOL 75ft Coupler Kit for DIY Line Sets 24K, 36K & 48K Air Handlers

The DIYCOUPLER-3858K75 MRCOOL 75 ft Coupler Kit for DIY Line Sets (3/8" × 5/8") is an HVAC line set extension coupler kit that lets you connect up to three MRCOOL DIY line sets together to extend total run length. It includes both the 3/8" and 5/8" couplers plus 75 ft of communication wire, allowing you to replace the shorter pre-attached indoor-unit wire and match the extended line set length for compatible MRCOOL DIY systems.

Country of Origin: Varies by production batch

Key Features / Specifications

  • Model / Part Number: DIYCOUPLER-3858K75
  • Brand: MRCOOL
  • Product Type: DIY line set coupler kit + communication wire
  • Line Set Sizes: 3/8" × 5/8"
  • Total Wire Length Included: 75 ft communication wire
  • Couplers Included: (2) DIYCOUPLER-38 and (2) DIYCOUPLER-58 (3/8" and 5/8" couplers)
  • Extension Capability: Connect three line sets together (e.g., three 16 ft, three 25 ft, or a mix of 16 ft and 25 ft)
  • Compatibility (as stated): Intended for 24,000 or 36,000 BTU indoor wall units; marketed for DIY line sets used with 24K, 36K & 48K air handlers
  • Installation Note: Replace the indoor unit’s pre-attached wire (example noted as 25 ft) with the included 75 ft wire when extending line sets
  • Related Option: If only connecting two line sets, a 50 ft coupler kit is referenced as the alternative

Ideal For

  • Extending MRCOOL DIY line set runs by coupling multiple line sets together
  • Installations where the indoor/outdoor distance requires more than a single line set length
  • Systems using 3/8" liquid and 5/8" suction lines that need matched couplers
  • DIY installs needing the included 75 ft communication wire to match the longer run
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