MRCOOL 5th Gen 16ft 1/4 x 1/2 Pre-Charged Line Set for DIY 9K, 12K & 18K Indoor

The MRCOOL 5th Gen 16ft 1/4 x 1/2 Pre-Charged Line Set makes installing MRCOOL DIY 9K, 12K, and 18K indoor units simple, fast, and worry-free. Factory pre-charged with R-454B refrigerant, this Quick-Connection line set eliminates the need for vacuum pumps, gauges, or special tools. Built with durable copper and leak-resistant fittings, it provides efficient refrigerant flow while ensuring long-term system reliability.

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

MRCOOL 5th Gen 16ft 1/4 x 1/2 Pre-Charged Line Set for DIY 9K, 12K & 18K Indoor Features

Pre-Charged with R-454B Refrigerant
Eco-friendly R-454B ensures efficient operation while reducing environmental impact.

Quick-Connection Design
Secure fittings eliminate the need for brazing, gauges, or vacuuming, making installation easier.

Durable Copper Tubing
Crafted from high-quality copper for long-lasting strength and dependable refrigerant transfer.

Sized for Compatibility
Features a 1/4" liquid line and 1/2" suction line, optimized for MRCOOL DIY 9K, 12K, and 18K indoor units.

Safety Certified
Contains compressed gas and meets Proposition 65 safety standards for compliance and reliability.

MRCOOL 5th Gen 16ft 1/4 x 1/2 Pre-Charged Line Set for DIY 9K, 12K & 18K Indoor Applications

• DIY installations – made for MRCOOL DIY 9K, 12K, and 18K indoor units.

• System expansions – extend system capacity with a ready-to-use pre-charged line set.

• Replacement solution – upgrade older or damaged line sets with a reliable new option.

• Time-saving installs – Quick-Connection design makes installation faster and easier.

What’s Included?

• 16 ft 1/4 x 1/2 Pre-Charged Line Set (R-454B)

• User Manual

Warranty

• 1-Year Parts Warranty

MRCOOL 5th Gen 16ft 1/4 x 1/2 Pre-Charged Line Set for DIY 9K, 12K & 18K Indoor Specifications

Frequently-Asked Questions

Is this line set DIY-friendly?
Yes. It is specifically designed for DIY installation with MRCOOL DIY 9K, 12K, and 18K indoor units.

What refrigerant is included?
This line set comes pre-charged with R-454B refrigerant, which is more environmentally friendly than R-410A.

Do I need special tools to install it?
No. The Quick-Connection fittings make installation simple without vacuum pumps, gauges, or brazing.

Can this line set be used with other systems?
No. It is built exclusively for MRCOOL DIY 9K, 12K, and 18K indoor units and should not be used with other models or brands.