MRCOOL® 50FT 1/4 x 3/8 Flared Line Set Kit for 9K & 12K Olympus and Advantage Mini Split, MC50-1438K
MRCOOL® 50FT 1/4 x 3/8 Flared Line Set Kit for 9K & 12K Olympus and Advantage Mini Split, MC50-1438K
Available in stock (199)
Product Description
The MRCOOL® MC50-1438 Mini Split Line Set Kit is a 50-foot flared copper refrigerant line set designed specifically for 9,000 and 12,000 BTU ductless mini split systems. This extended-length line set is ideal for installations that require longer routing distances, giving installers greater flexibility without sacrificing performance.
Manufactured from high-quality refrigeration-grade copper, the MC50-1438 ensures reliable refrigerant flow, excellent heat transfer, and long-term durability. The factory-flared ends provide secure, leak-resistant connections when paired with compatible MRCOOL and other standard mini split systems.
This line set features a 1/4” liquid line and a 3/8” suction line, which is the proper sizing for most 9K and 12K mini split systems, helping maintain system efficiency and compressor longevity. The natural copper finish offers corrosion resistance and professional-grade performance for both residential and light commercial applications.
Whether you’re extending an existing installation or planning a new long-run setup, the MRCOOL MC50-1438 delivers dependable quality, compatibility, and installation flexibility trusted by HVAC professionals and DIY installers alike.
KEY FEATURES & BENEFITS
- 50-Foot Length – Ideal for long or complex installations
- Designed for 9K & 12K Mini Splits – Proper sizing for efficiency
- 1/4” Liquid × 3/8” Suction Lines – Balanced refrigerant flow
- Refrigeration-Grade Copper – Durable, corrosion-resistant
- Factory-Flared Ends – Secure, leak-resistant connections
- OEM MRCOOL Accessory – Trusted compatibility
- Flexible Routing – Easier installation around obstacles
TECHNICAL SPECIFICATIONS
- Brand: MRCOOL
- Series: Mini Split Line Set
- Model: MC50-1438
- Unit Type: Accessory
- Equipment Type: Line Set
LINE SET DETAILS
- Line Set Length: 50 ft
- Maximum Line Set Length: 50 ft
- Liquid Line Size: 1/4”
- Liquid Line Fitting: 3/8”
- Suction Line Size: 3/8”
- Suction Line Fitting: 1/2”
- Fitting Type: Flared
MATERIAL & FINISH
- Material: Copper
- Color: Copper
- Color Family: Bronze / Copper Metallic
SAFETY & COMPLIANT
- Proposition 65 Warning: Yes
- Contains Electronics: No
- Contains Chemicals: No
- Contains Aerosol: No
- Contains Compressed Gas: No
- Has Batteries: No
- Restricted States: GU, PR, VI
SHIPPING & LOGISTICS
- Freight Class: 92.5
Shipping Dimensions
- Depth: 35.75 in
- Width: 35.50 in
- Height: 3.50 in
- Weight: 25 lbs
FREQUENTLY ASKED QUESTIONS
Q: What size mini split is this line set for?
A: This line set is designed for 9,000 and 12,000 BTU mini split systems.
Q: Are the line ends flared?
A: Yes. Both lines come factory-flared for standard mini split connections.
Q: Can this line set be cut shorter?
A: Yes, but it must be cut and re-flared properly by a qualified installer.
Q: Is this compatible with MRCOOL systems?
A: Yes. This is a genuine MRCOOL OEM line set designed for compatibility with MRCOOL mini split systems.
When installing 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. MRCOOL DIRECT 615-553-8118
Why Buy From MRCOOL DIRECT?
When you order from MRCOOL Direct, you get:
- ✅ Authorized MRCOOL® dealer – Your warranty is protected
- ✅ Factory-fresh units – No refurbished or mystery sources
- ✅ Fast U.S. shipping – Most in-stock items ship in 1–3 business days
- ✅ Financing options – Make high-efficiency comfort more affordable
- ✅ Real product support – Help with sizing, line set selection, and DIY questions
- ✅ No third-party marketplace middlemen – Just genuine MRCOOL® systems from a trusted MRCOOL® dealer.
BUY DIRECT!
Feel Free to call us anytime. Family Friendly help just a dial away. We love talking HVAC
615-553-8118
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