MRCOOL 5th Gen 35ft 1/4 x 3/8 Lineset for DIY 6K, 9K & 12K Indoor w/ DIY Pro Cable - R454B, DIY35-1438C-O

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MRCOOL 5th Gen 35ft 1/4 x 3/8 Lineset for DIY 6K, 9K & 12K Indoor w/ DIY Pro Cable - R454B, DIY35-1438C-O

Name: MRCOOL 5th Gen 35ft 1/4 x 3/8 Lineset for DIY 6K, 9K & 12K Indoor w/ DIY Pro Cable - R454B, DIY35-1438C-O
Brand: MRCOOL
SKU: DIY35-1438C-O
Price: 502.00 USD
Availability: InStock

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SKU: DIY35-1438C-O

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35 ft pre-charged lineset for 5th Gen DIY 6K, 9K, or 12K systems, includes DIYPro cable
1/4" liquid line, 3/8" suction line
Snap-together Quick Connect fittings — no brazing, flaring, or vacuum pump needed
DIYPro cable skips running electrical conduit between units
Pre-charged with eco-friendly R-454B refrigerant

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*Please Note: This timeline is an estimate. Certain products may require an additional 1 week for manufacturing. Please speak with your sales rep, Matthew, for official details and confirmation before placing your order.

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35-Foot Length • Pre-Charged R-454B • 1/4" x 3/8" Connections • Includes DIYPRO® Cable

MRCOOL® 5th Gen DIY® 35ft Quick Connect® Lineset w/ DIYPRO® Cable DIY35-1438C-O

The 5th Generation MRCOOL® DIY® 35ft Quick Connect® Line Set is the critical, 100% pre-charged component engineered for a seamless, tool-free installation of your MRCOOL DIY 6K, 9K, or 12K BTU indoor air handlers. Arriving filled with the latest eco-friendly R-454B refrigerant and bundled with the heavy-duty DIYPRO® communication cable, this 35-foot kit completely eliminates the need for professional vacuuming, flaring, or traditional electrical conduit.

MRCOOL 5th Gen DIY 35ft Line Set Applications

Compatible exclusively with 5th Generation MRCOOL DIY 6K, 9K, and 12K BTU indoor air handlers.
Ideal for installations requiring extended runs up to 35 feet of distance between the indoor and outdoor units.
Perfect for DIY homeowners seeking to entirely bypass expensive professional HVAC vacuuming, charging, and electrical conduit fees.

Note: This specific line set (1/4" x 3/8") is sized for 6K, 9K, and 12K BTU units. Ensure your indoor unit matches these capacity requirements before proceeding with your installation.

MRCOOL 5th Gen DIY 35ft Line Set Specifications

SKU	DIY35-1438C-O
Series Compatibility	MRCOOL DIY 5th Generation
Capacity Compatibility	6,000 / 9,000 / 12,000 BTU
Length	35 ft
Liquid Line Size	1/4"
Suction Line Size	3/8"
Refrigerant Type	R-454B
Charge Status	100% Pre-Charged
Connection Type	Quick Connect®
Included Accessories	DIYPRO® Communication Cable

MRCOOL 5th Gen DIY 35ft Line Set Features & Technology

Patented Quick Connect® Fittings: Engineered for secure, leak-proof attachment without the need for specialized HVAC tools, brazing, or flaring.
DIYPRO® Cable Included: Streamlines the electrical connection between the indoor and outdoor units by eliminating the need for conduit, offering superior durability against severe weather and pests.
100% Pre-Charged: Factory-filled with the exact amount of R-454B refrigerant needed for a 35-foot run, completely eliminating the need for a vacuum pump.
Eco-Friendly R-454B: Utilizes the latest next-generation refrigerant, ensuring compliance with updated environmental standards and offering a significantly lower Global Warming Potential (GWP).
Heavy-Duty Insulation: Wrapped in premium, UV-resistant insulation to prevent condensation, minimize thermal loss, and protect against harsh outdoor weather conditions.

Why Choose the MRCOOL 5th Gen DIY 35ft Line Set

Ensures a flawless, professional-grade connection over longer distances without paying contractor fees.
Safely pre-charged to save you hours of installation time and technical frustration.
Built with highly durable, weather-resistant materials for long-lasting reliability and efficiency.

The MRCOOL® DIY35-1438C-O Quick Connect® Line Set is the definitive key to a true do-it-yourself HVAC installation, delivering perfectly metered R-454B refrigerant and a secure electrical connection in a foolproof, snap-together design.

Key Information

Order Cutoff Time: 2:00 PM EST
Order Handling Time: 1–3 business days (Monday–Friday)
Transit Time: 1–7 business days (Monday–Friday)
Total Estimated Delivery Time: 3–11 business days (Monday–Friday)
Shipping Availability: Free Shipping On some Items In The Contiguous United States only

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Frequently Asked Questions

This lineset isn't meant to be cut. The DIY35-1438C-O is factory pre-charged with the exact R-454B charge for a 35-foot run and sealed with Quick Connect fittings, so pick the length that best fits your install.

The DIY35-1438C-O uses patented Quick Connect fittings that attach to the indoor and outdoor units without brazing, flaring, or specialized HVAC tools, and no vacuum pump is needed.

They come in set lengths; this one is 35 ft, for extended runs of up to 35 feet between the indoor and outdoor units.

The DIYPro communication cable handles the electrical connection between the indoor and outdoor units without conduit, and it is built to hold up against severe weather and pests.

It is sized for 5th Generation MRCOOL DIY 6K, 9K, and 12K BTU indoor air handlers, with a 1/4" liquid line and 3/8" suction line.

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MRCOOL 5th Gen 35ft 1/4 x 3/8 Lineset for DIY 6K, 9K & 12K Indoor w/ DIY Pro Cable - R454B, DIY35-1438C-O

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