MRCOOL DIY 50ft 1/4 x 1/2 Pre-Charged Lineset for DIY 9K, 12K & 18K Indoor, 4th Generation, DIY50-1412C
$513.00
DIY 4th Generation 50ft 1/4 x 1/2 Lineset for DIY 9K, 12K & 18K Indoor
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The MRCOOL DIY 50ft 1/4 x 1/2 Lineset comes pre-charged with precision accuracy, filled with R-410A refrigerant. This design streamlines installation by eliminating the need for vacuuming. The set also includes a 50 ft. communication wire to ensure seamless connection.
What makes the MRCOOL Line Set stand out?
- Kink-resistant design for enhanced durability
- Simple screw-on connectors for easy installation
- Integrated Quick Connect valves for a secure fit
- No vacuuming necessary—simplifying setup
- Leak-proof construction for reliable performance
This 50 ft. copper line set is specifically designed to connect the 4th Generation MRCOOL DIY Condenser to the MRCOOL DIY Air Handlers, compatible with 9K, 12K, and 18K models.
For multi-zone systems, it’s essential to use one line set per indoor unit to guarantee optimal system functionality.
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Specifications and Dimensions
Equipment Type R-410A Charged Line Set Weight 14.55 lbs Length 50 Feet Color Copper Line Set Fitting Type Quick-Connection Liquid Line Size 1/4 Suction Line Size 1/2 Contains Chemicals Yes Contains Aerosol Yes Contains Compressed Gas Yes Proposition 65 Warning Yes Restricted States GU;PR;VI -
Handling Line Sets
When installing your MRCOOL system, handle refrigerant lines carefully to ensure optimal performance and prevent damage.
Bending the Copper Lines: Maintain a minimum 4-inch bend radius and use smooth curves instead of sharp angles to protect the lines and ensure proper refrigerant flow.
Avoid Repeated Bending: Bending copper lines more than three times can harden and weaken them, increasing the risk of breakage. Handle with care and minimize adjustments.
For best results, use gradual bends and consult a licensed professional or our support team if needed.





