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MRCOOL  |  SKU: DIY16-3858-O
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MRCOOL 5th Gen 16ft 3/8 x 5/8 Pre-Charged Lineset for DIY 24K & 36K Indoor

$271.00 USD

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Description

MRCOOL 5th Gen 16ft 3/8 x 5/8 Pre-Charged Line Set for DIY 24K & 36K Indoor

The MRCOOL DIY® 5th Gen 16 ft Pre-Charged Quick Connect Line Set (3/8″ x 5/8″) is a ready-to-install refrigerant connection solution designed for use with MRCOOL 24K and 36K BTU indoor mini-split units. This compact 16-foot line set comes factory pre-charged with R-454B refrigerant, eliminating the need for vacuuming or refrigerant charging during installation. Its Quick Connect® fittings allow for secure, leak-resistant connections without requiring specialized HVAC tools, making setup easier for both DIY installers and professionals.

Sized with a 3/8″ liquid line and a 5/8″ suction line, this line set matches the refrigerant flow needs of compatible 24K and 36K indoor units to help ensure efficient system performance. The 16-foot length is ideal for installations where the indoor and outdoor components are placed close together, such as standard exterior wall applications or compact mechanical layouts.

Built with durable materials and weather-resistant insulation, this line set is designed to withstand outdoor exposure and help maintain reliable performance year-round. The robust construction and well-engineered fittings allow for consistent refrigerant flow and secure connections even in challenging installation environments.

Whether you’re installing a new MRCOOL DIY mini-split system or upgrading an existing one, the MRCOOL DIY® 5th Gen 16 ft Pre-Charged Quick Connect Line Set offers a convenient, user-friendly solution that combines simplicity, compatibility, and dependable performance for short-distance HVAC line runs.

Please note: This line set is designed for DIY installation and comes pre-charged with R-454B refrigerant for quick, tool-free setup.

Features

  • Pre-Charged Convenience
    Factory-charged with R-454B refrigerant to simplify installation and ensure reliable system performance.
  • Quick-Connection Fittings
    Secure fittings eliminate the need for brazing, vacuuming, or gauges during setup.
  • Durable Copper Construction
    Made with high-quality copper tubing for long-lasting durability and dependable refrigerant transfer.
  • Optimized Size
    Features a 3/8" liquid line and 5/8" suction line, perfectly matched for DIY 24K and 36K systems.
  • Safe & Compliant
    Contains compressed gas and meets Proposition 65 safety requirements.

Specifications

Specification Details
Equipment Type R-454B Charged Line Set
Length 16 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

Applications

  • DIY installations – designed specifically for MRCOOL DIY 24K & 36K indoor units.

  • System expansions – extend your system’s coverage with a pre-charged solution.

  • Upgrades – replace older or damaged line sets with a reliable, pre-charged option.

  • Time-saving installs – quick-connect technology reduces installation time and eliminates specialized tools.

What’s Included

  • 16 ft 3/8 x 5/8 Pre-Charged Line Set (R-454B)

  • User Manual

Warranty

  • 1-Year Parts Warranty

Frequently-Asked Questions

Is this line set DIY-friendly?
Yes. This line set is designed for DIY installation with MRCOOL DIY 24K and 36K indoor units.

What refrigerant does it use?
This line set comes pre-charged with R-454B refrigerant, which is more eco-friendly than R-410A.

Do I need special tools to install this line set?
No. Thanks to Quick-Connection fittings, no vacuum pump, gauges, or brazing equipment are required.

Can I use this line set with other systems?
No. This line set is engineered specifically for MRCOOL DIY 24K and 36K indoor systems and should not be used with other brands or models.

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