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

The MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set with DIY Pro Cable is a smart, efficient solution for extending your MRCOOL DIY 18K Mini Split system. Designed with convenience in mind, this line set is pre-charged with R-454B refrigerant and features Quick Connect fittings, eliminating the need for vacuuming or charging. The 35-foot length provides flexibility for installations in multi-level homes, detached structures, or wider layouts, and the included DIY Pro Cable ensures seamless communication and power between units.

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

Pre-Charged with R-454B – Line set is factory-filled and sealed with environmentally friendly R-454B refrigerant for simplified installation.

Quick Connect Fittings – Uses tool-free, leak-proof connections that eliminate the need for HVAC tools or professional vacuuming.

35 Ft. Line Set Length – Perfect for medium-distance installations, including second-floor units, garages, or expanded home layouts.

Sized for 18K BTU Systems – Specifically built to pair with MRCOOL DIY 5th Gen 18K air handlers, ensuring ideal refrigerant flow and system compatibility.

Includes DIY Pro Cable – Comes with a weather-resistant communication and power cable, pre-matched to MRCOOL system standards.

Durable Outer Jacket – Features UV-resistant and weatherproof insulation to protect against environmental wear and damage.

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

• Multi-level homes – Great for connecting units across floors or in elevated positions

• Detached buildings – Ideal for garages, workshops, or studios separate from the main structure

• Wider room layouts – Useful in larger rooms or setups requiring extended reach

• Retrofit installs – Replaces existing line sets in older systems with a pre-charged, quick-fit solution

• DIY-friendly setups – Made for MRCOOL customers seeking a tool-free installation experience

What’s Included?

• 35 Ft. Line Set (1/4" x 1/2")

• DIY Pro Communication and Power Cable

• Quick Connect fittings (pre-installed)
  

• Setup and safety instructions

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

Frequently-Asked Questions

Is this line set compatible with 12K or 9K air handlers?
No. This specific line set is optimized for MRCOOL 18K 5th Gen systems only due to the 1/2" suction line size required for proper performance.

Does it come with refrigerant already inside?
Yes. The line set is pre-charged with R-454B refrigerant, sealed from the factory for immediate use.

Can I cut this line set to a shorter length?
No. The line set is designed to be used at its full 35-foot length. Cutting or modifying it will void the sealed system and compromise performance.

Is this safe for first-time DIY users?
Yes. MRCOOL Quick Connect systems are designed for user-friendly installation, though reviewing the manual or working with an HVAC professional if unsure is always a good idea.