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  5. MRCOOL DIY® 5th Gen 25 ft. 1/4" x 3/8" Pre-Charged Quick Connect Line Set - R454B (for 6K, 9K & 12K Indoor Units)
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MRCOOL DIY® 5th Gen 25 ft. 1/4" x 3/8" Pre-Charged Quick Connect Line Set - R454B (for 6K, 9K & 12K Indoor Units)

$264.00
$699.00 $264.00
Save $435.00
SKU: DIY25-1438-O
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MRCOOLMRCOOL DIY® 5th Gen 18,000 BTU Multi-Zone Mini Split Air Handler 230V, DIY-18-HP-WMAH-230D25-O
MRCOOL DIY® 5th Gen 18,000 BTU Multi-Zone Mini Split Air Handler 230V, DIY-18-HP-WMAH-230D25-O
MRCOOL DIY® 5th Gen 25 ft. 1/4" x 1/2" Pre-Charged Quick Connect Line Set - R454B (for 18K Indoor Units)
MRCOOLMRCOOL DIY® 5th Gen 25 ft. 1/4" x 1/2" Pre-Charged Quick Connect Line Set - R454B (for 18K Indoor Units)
$264.00
$699.00 $264.00

The MRCOOL® DIY® 25 ft 1/4 x 3/8 Line Set (Model: DIY25-1438-O) is designed to work seamlessly with DIY® 6K, 9K, and 12K indoor units. Pre-charged with R-454B refrigerant, this line set ensures efficient performance, quick installation, and long-lasting reliability. Featuring patented Quick-Connection fittings, it allows homeowners to set up their own system without the need for specialized HVAC tools, making it a perfect accessory for the MRCOOL® DIY® Mini-Split systems.

  • Pre-Charged Convenience: Factory pre-charged with eco-friendly R-454B refrigerant for immediate use.
  • Quick-Connection Fittings: Designed for hassle-free installation without vacuuming or special tools.
  • Compatible Units: Works with MRCOOL® DIY® 6K, 9K, and 12K indoor air handlers.
  • Durable Construction: Built with strong materials in a white finish and copper interior for reliable operation.
  • Optimal Size: 25 ft line set with a 1/4 in. liquid line and 3/8 in. suction line.
  • Safe & Certified: Contains refrigerant and compressed gas, with Proposition 65 warning compliance.