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
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Multi-level homes – Great for connecting units across floors or in elevated positions
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Detached buildings – Ideal for garages, workshops, or studios separate from the main structure
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Wider room layouts – Useful in larger rooms or setups requiring extended reach
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Retrofit installs – Replaces existing line sets in older systems with a pre-charged, quick-fit solution
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DIY-friendly setups – Made for MRCOOL customers seeking a tool-free installation experience
What’s Included?
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35 Ft. Line Set (1/4" x 1/2")
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DIY Pro Communication and Power Cable
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Quick Connect fittings (pre-installed)
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Setup and safety instructions
MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set Specifications
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Series
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5th Gen DIY Line Set - R-454B
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Compatible Air Handlers
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18K 5th Gen DIY
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Line Set Length
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35 ft
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Lineset Fitting Type
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Quick-Connection
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Gross Dimensions
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32.09" D x 4.92" H x 32.09" W
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Color
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White
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Color Family
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Bronze/Copper Metallic
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Refrigerant Type
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R-454B
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Refrigerant Volume
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3.46
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Liquid Line Size
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1/4
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Suction Line Size
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1/2
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Registered Warranty
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N/A
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Has Batteries
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No
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Contains Electronics
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No
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Contains Chemicals
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Yes
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Contains Aerosol
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Yes
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Contains Compressed Gas
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Yes
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Proposition 65 Warning
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Yes
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Restricted States
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GU;PR;VI
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Net Weight (Lbs)
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18.3
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Gross Weight (Lbs)
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22.7
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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.
