MRCOOL - 75ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor - R454B — Klondike AC & Heating Skip to content
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MRCOOL - 75ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor - R454B
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MRCOOL - 75ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor - R454B

by MRCOOL
SKU DIY75-1438C-O
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$1,278.00
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The MRCOOL® DIY75-1438C-O is a 50’+25’ foot pre-charged lineset with an integrated DIY Pro Cable, designed for use with MRCOOL DIY 6K, 9K, and 12K indoor units using R-454B refrigerant. This extended-length lineset offers a convenient, all-in-one solution for efficient and reliable HVAC installations.

Featuring patented Quick Connect fittings, this lineset enables a quick and secure connection between indoor and outdoor units without specialized tools. The integrated DIY Pro Cable streamlines wiring and enhances installation safety, making it ideal for professional-quality DIY projects.

Key Features:

  • Length: 75 feet (50’+25’+coupler) of pre-charged copper tubing
  • Line Sizes: 1/4 inch liquid line and 3/8 inch suction line
  • Refrigerant: Pre-charged with eco-friendly R-454B refrigerant
  • Compatibility: Suitable for MRCOOL DIY 6K, 9K, and 12K indoor units
  • Connection Type: Quick Connect fittings for easy, tool-free installation
  • Pro Cable: Integrated DIY Pro Cable for simplified wiring and enhanced safety
  • Insulation: High-quality insulation to improve energy efficiency and prevent condensation
  • Durability: Constructed with corrosion-resistant materials for lasting performance
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from 2325 reviews
Super responsive - great pricing - easy!!! No

Super responsive - great pricing - easy!!! No brainer!

Ray
Klondike AC & Heating
Great experience.

Excellent pricing, fast shipping, great communication. I highly recommend Klondike AC

Bob Warne
Klondike AC & Heating
This unit is great!

This unit is great. Arrived in very heavy packaging upon a pallet. Everything intact. Setup was straight forward. Love the easy to use app.Unit came right up without any problems. Very happy and highly recommend.

Bob Warne
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Bricks arrived very well packed

Bricks arrived very well packed, so all went well, after a lengthy delay from backorder at distributor warehouse. Follow up from Klondike was reassuring. Good customer service.

Anonymous
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Very efficient and surprisingly quiet

Our installer said it was well-designed. We’re very satisfied with the results.

Michael Johnson
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Reliable performance and great customer care

This product is exactly what we needed. Efficient, durable, and worth the price.

Samuel Kim
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Great value for money and easy to maintain

Very happy with this unit. Noticed an immediate difference in cooling and lower energy bills.

Grace Williams
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Quiet Operation, Great Comfort

Very happy with this purchase. The team at Klondike AC made the process simple and stress-free.

Matthew Moreno
Goodman - 4 Ton/60,000 BTU Gas Packaged Unit - 13.4 SEER2 - Single Stage - R32 - 230V
Smooth Installation Experience

Super smooth experience from start to finish. Josh answered all our questions and made sure delivery was easy.

Edward Wilkins
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Energy Bills Already Lower

This unit has been excellent. Runs quietly and keeps our home comfortable. Huge thanks to Maggie at Klondike AC.

Krista Johnson
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Josh Helped Us Pick the Right Model

Energy bills already dropped since installing this unit. It’s efficient and reliable. Thank you Klondike AC.

Anne Smith
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Impressed with the Quality

The Klondike AC team impressed us with great service. Installation was straightforward and performance is better than expected.

Melissa Hart
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Cools and Heats Better Than Expected

Super smooth experience from start to finish. Josh answered all our questions and made sure delivery was easy.

Kelly Foley
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Perfect Size for Our Office

The Klondike AC team impressed us with great service. Installation was straightforward and performance is better than expected.

Keith Ray
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