MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set with DIY Pro Cable, 1/4" x 3/8", for DIY 6K, 9K, & 12K Mini Split Indoor Air Handler

MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set with DIY Pro Cable

The MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set with DIY Pro Cable is engineered to provide a reliable and flexible installation solution for MRCOOL 6K, 9K, and 12K BTU indoor air handlers. Pre-charged with R-454B refrigerant, this line set eliminates the need for vacuuming or refrigerant handling. Its Quick Connect fittings make it perfect for DIYers and professionals alike. Whether you're extending your system reach or replacing an old line set, this 35-foot configuration ensures safe, simple, and efficient setup.

MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set with DIY Pro Cable Features

Pre-Charged Convenience – Factory pre-charged with R-454B refrigerant, removing the need for charging or vacuuming during installation.

Quick Connect Fittings – Allows for a tool-free, leak-resistant connection that simplifies the install process for non-professionals.

Sized for Smaller Units – Designed specifically for 6K, 9K, and 12K 5th Gen DIY air handlers for optimal compatibility and system performance.

35 Ft. Extended Length – Offers more placement flexibility between indoor and outdoor components without needing refrigerant line splicing.

DIY Pro Cable Included – Includes a weather-resistant communication and power cable designed to work seamlessly with MRCOOL mini split systems.

Durable Construction – Features a tough outer jacket that’s UV- and weather-resistant, protecting your line set year-round.

MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set with DIY Pro Cable Applications

• Compact installs – Perfect for homes or spaces where a 35-ft. run is needed between air handler and condenser

• Room-to-room use – Ideal for indoor units placed in different rooms or across split walls

• Second-story setups – Excellent for vertically-stacked configurations in two-story homes

• Detached structures – Useful for extending line sets to small garages, studios, or sheds

• DIY replacement – A smart choice for replacing older or damaged line sets in existing MRCOOL systems

What’s Included?

• 35 Ft. Line Set (1/4" x 3/8")

• DIY Pro Cable (communication and power)

• Quick Connect Fittings (pre-installed)

MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set with DIY Pro Cable Specifications

Frequently-Asked Questions

Is this line set compatible with all MRCOOL units?
No. It is specifically designed for use with 5th Gen MRCOOL DIY 6K, 9K, and 12K indoor air handlers. It is not compatible with 18K or larger units.

Does it require professional installation?
No. This line set is meant for DIY installations using MRCOOL’s patented Quick Connect fittings. However, those unfamiliar with HVAC systems may still benefit from hiring a technician.

Is it already filled with refrigerant?
Yes. The line set is pre-charged with R-454B and factory-sealed for clean, efficient setup without handling refrigerant.

Can I cut the line to a shorter length?
No. This line set must be used at full length as altering it will void the warranty and compromise the sealed, pre-charged design.