MRCOOL 5th Gen 16ft 1/4 x 1/2 Lineset for DIY 18K Indoor - R454B , DIY16-1412-O

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MRCOOL 5th Gen 16ft 1/4 x 1/2 Lineset for DIY 18K Indoor - R454B , DIY16-1412-O

Name: MRCOOL 5th Gen 16ft 1/4 x 1/2 Lineset for DIY 18K Indoor - R454B , DIY16-1412-O
Brand: MRCOOL
SKU: DIY16-1412-O
Price: 239.00 USD
Availability: InStock

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SKU: DIY16-1412-O

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$239.00

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16 ft pre-charged lineset for 5th Gen DIY 18K systems
1/4" liquid line, 1/2" suction line
Snap-together Quick Connect fittings — no brazing, flaring, or vacuum pump needed
Pre-charged with eco-friendly R-454B refrigerant
UV-resistant insulation for outdoor durability

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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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Pre-Charged R454B • 100% DIY Installation • 16-Foot Reach

MRCOOL 5th Gen DIY 16ft 1/4" x 1/2" Lineset for DIY 18K Indoor Units DIY16-1412-O

The MRCOOL 5th Gen DIY 16ft Pre-Charged Lineset (DIY16-1412-O) is the specialized connection solution for 18,000 BTU 5th Generation DIY mini-split systems. This 16-foot lineset is perfectly optimized for short-run or back-to-back installations where the indoor air handler and outdoor condenser are located in close proximity. Factory-sealed and pre-charged with the next-generation R454B refrigerant, it completely eliminates the technical burden of vacuuming and charging. Featuring MRCOOL's patented Quick Connect fittings, this lineset ensures a high-performance, leak-proof installation that can be completed without professional HVAC tools or specialized labor.

MRCOOL 5th Gen DIY 16ft 1/4" x 1/2" Lineset Applications

Back-to-back residential installs where units are separated by a single exterior wall.
Compact 18,000 BTU 5th Generation DIY mini-split system configurations.
Installations requiring a clean, professional finish without the need for specialized HVAC tools.
Eco-conscious upgrades requiring full compliance with updated R454B low-GWP refrigerant standards.

Provides the precise 1/4" liquid and 1/2" suction diameters required to maintain the specific refrigerant volume and pressure for 18K BTU air handlers.

MRCOOL 5th Gen DIY 16ft 1/4" x 1/2" Lineset Specifications

SKU	DIY16-1412-O
Length	16 Feet
Liquid Line Size	1/4 Inch
Suction Line Size	1/2 Inch
Compatibility	5th Gen DIY 18K BTU Indoor Handlers
Refrigerant Type	Pre-Charged with R454B
Connection Type	Patented Quick Connect Fittings

Why Choose the MRCOOL 5th Gen 16ft DIY Lineset

Zero Specialized Tools: Patented Quick Connect fittings allow you to create an airtight, leak-proof seal with just a wrench.
Eco-Friendly R454B: Arrives pre-charged with low-GWP refrigerant to ensure your system meets the latest modern environmental regulations.
Heavy-Duty Insulation: Robust outer insulation protects against condensation, energy loss, and harsh outdoor elements to ensure long-term reliability.
Professional Results: Empowers homeowners to bypass expensive professional labor for vacuuming, flaring, and charging while maintaining industrial-grade performance.

The MRCOOL 5th Gen 16ft DIY Lineset (DIY16-1412-O) provides the exact engineering and construction needed for a streamlined, high-efficiency 18K BTU installation.

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

The DIY16-1412-O uses patented Quick Connect fittings that make an airtight, leak-proof seal with just a wrench, with no flaring, vacuuming, or charging required.

They come in fixed lengths. This one is 16 ft, well suited to short or back-to-back installs where the indoor and outdoor units share a single exterior wall.

It is made for 5th Gen DIY 18K BTU indoor air handlers, which need its 1/4" liquid and 1/2" suction line sizes.

Yes. It arrives pre-charged with low-GWP R-454B refrigerant.

Yes. Heavy-duty outer insulation helps prevent condensation and energy loss and protects the lines from outdoor weather.

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MRCOOL 5th Gen 16ft 1/4 x 1/2 Lineset for DIY 18K Indoor - R454B , DIY16-1412-O

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