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MRCOOL DIY 75ft (50 ft + 25 ft) 3/8 x 5/8 Lineset for DIY 24K & 36K Indoor, 4th Generation, DIY75-3858C

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$1,214.00

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MRCOOL Accessories

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MRCOOL DIY 75 ft (50 ft + 25 ft) 3/8 x 5/8 Line Set for DIY 24K & 36K Indoor Units, 4th Generation — Model DIY75-3858C

When it comes to delivering seamless, professional-grade HVAC installations without the hassle, the MRCOOL DIY 75 ft Line Set is your ultimate solution. Designed specifically for 24,000 and 36,000 BTU indoor units from MRCOOL’s 4th Generation DIY Mini Split lineup, this comprehensive line set package gives you the flexibility, quality, and convenience you need to get the job done right—fast.

Imagine having the freedom to connect your indoor air handlers to the condenser with confidence and ease. This 75-foot line set, combining a 50 ft. and a 25 ft. copper tubing set, offers just that. Whether you’re working on a single-zone or multi-zone system, this line set provides the perfect length and the right fittings to match your installation needs. The quick-connect fittings mean no more struggling with complicated tools or vacuum pumps—just a smooth, hassle-free connection that saves you time and effort on every job.

If you’re tackling multi-zone HVAC projects, you know that every indoor unit requires its own dedicated line set for optimal performance. This kit is built to support just that, ensuring your system functions flawlessly. Plus, with the included communication wire, you can easily link your indoor and outdoor units, streamlining your setup and cutting down on installation complexity. The extra communication wire included with each air handler means you’re always prepared for any layout challenge.

Crafted from high-quality copper with industry-standard 3/8" liquid and 5/8" suction lines, this line set is engineered to meet the rigorous demands of HVAC systems. The Gold Fin® coating on MRCOOL components ensures resistance to corrosion and wear, especially in harsh or coastal environments, giving you and your customers peace of mind that the system will stand the test of time.

Forget the expensive technician visits or the need for specialized HVAC equipment. This line set comes pre-charged with R-410A refrigerant, allowing you to complete installations yourself quickly and confidently. It’s the perfect blend of professional quality and DIY convenience, empowering your business to deliver top-tier comfort solutions efficiently without sacrificing quality.

  • Complete 75 ft. package combining 50 ft. and 25 ft. line sets for versatile installation options
  • Quick-connect fittings for fast, tool-free, and leak-proof connections
  • Pre-charged with R-410A refrigerant for hassle-free setup without vacuum pumps
  • Includes 50 ft. communication wire, with additional wire included per air handler for multi-zone systems
  • Durable copper tubing sized perfectly for 24K and 36K BTU indoor units
  • Ideal for multi-zone systems—one line set per indoor unit required for flawless operation

Visualize completing your next HVAC project with confidence, knowing you have the right line set that fits perfectly, installs quickly, and performs reliably. This MRCOOL DIY line set isn’t just an accessory—it’s a game-changer that helps you deliver professional results faster, reduce labor costs, and expand your capacity to take on more jobs. Stock your inventory with this essential component and watch your installations run smoother, your customers stay happier, and your business grow stronger.

Make the smart choice today—equip yourself with the MRCOOL DIY 75 ft Line Set and transform how you install HVAC systems forever.

This product includes three products:

  1. MRCOOL DIY 50ft 3/8 x 5/8 Lineset for DIY 24K & 36K Indoor, 4th Generation, DIY50-3858C
  2. MRCOOL 25ft 3/8 x 5/8 Lineset for DIY 24K & 36K Indoor, DIY25-3858
  3. MRCOOL DIYCOUPLER-58 + DIYCOUPLER-38 + 75ft MC-5 Cable, 4th Gen, DIYCOUPLER-3858K75C

For Multi-Zone systems, one line set per indoor unit is required to ensure the system will function properly.

PRODUCT SPECIFICATIONS:

Equipment Type R-410A Charged Line Set
Length 75 Feet
Color Copper
Line Set Fitting Type Quick-Connection
Liquid Line Size 3/8
Suction Line Size 5/8
Contains Chemicals Yes
Contains Aerosol Yes
Contains Compressed Gas Yes
Proposition 65 Warning Yes
Restricted States GU;PR;VI

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Frequently Asked Questions About MRCOOL DIY 75ft (50 ft + 25 ft) 3/8 x 5/8 Lineset for DIY 24K & 36K Indoor, 4th Generation, DIY75-3858C

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Product Overview

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  • Air Handler BTU:

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  • Condenser BTU:

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  • Outdoor Operating Temp (Cool/ heat):

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MRCOOL DIY 75ft (50 ft + 25 ft) 3/8 x 5/8 Lineset for DIY 24K & 36K Indoor, 4th Generation, DIY75-3858C Reviews