When installing a ductless system across larger spaces, having the right line length ensures a smoother setup. The MRCOOL DIY50-1412C-O is designed to simplify connections with a ready-to-use solution that avoids additional refrigerant handling or specialized tools.
Built for compatible MRCOOL DIY systems, this line set supports efficient refrigerant transfer over longer distances. As part of the DIY Line Set - R-454B series, it is intended for 5th generation systems using R-454B refrigerant. It fits MRCOOL DIY mini split 50ft line set 1/4 x 1/2 configurations and meets MRCOOL DIY 5th Gen 9K 12K 18K BTU indoor line set requirements where extended runs are needed.
The pre-charged design removes the need for on-site vacuuming or charging, reducing installation time. Quick-connect fittings make setup more straightforward, while the 50 ft length allows flexible placement of indoor and outdoor units especially useful when standard line sets are not enough.
One customer shared, “Running a system across a larger home used to mean extra tools and time. With this line set, the connection was straightforward, and I didn’t need to handle refrigerant at all. It saved effort and reduced setup stress.”
This shows how the pre-charged design and extended length help streamline installation. With fewer steps and less complexity, setups can be completed more efficiently.
Overall, this line set delivers a reliable and practical solution for extended-distance mini split installations.
Product Highlights
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Pre-charged line set
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Eliminates need for vacuuming or refrigerant charging
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50 ft extended length
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Supports flexible installation across larger spaces
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Quick-connect fittings
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Simplifies and speeds up installation
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R-454B compatibility
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Designed for use with 5th generation MRCOOL DIY systems
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Standard 1/4" x 1/2" sizing
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Matches common mini split connection requirements
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