MRCOOL® 50FT 1/4 x 1/2 Flared Line Set Kit for 9K, 12K, and 18K Olympus and Advantage Mini Split, MC50-1412K
MRCOOL® 50FT 1/4 x 1/2 Flared Line Set Kit for 9K, 12K, and 18K Olympus and Advantage Mini Split, MC50-1412K
Available in stock (589)
Product Description
The MRCOOL® MC50-1412 Mini Split Line Set Kit is a 50-foot flared copper refrigerant line set engineered for 9,000 BTU, 12,000 BTU and 18,000 BTU ductless mini split systems. Designed for installations requiring extended routing distances, this line set provides the flexibility installers need while maintaining optimal system performance and efficiency.
Constructed from premium refrigeration-grade copper, the MC50-1412 delivers excellent heat transfer, long-term durability, and resistance to corrosion. The factory-flared ends ensure tight, 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 1/2" suction line, the correct sizing for most 9k, 12K and 18K mini split air handlers, helping preserve compressor longevity and consistent refrigerant flow. Its natural copper finish provides a professional appearance while standing up to demanding residential and light-commercial environments.
Whether you’re installing a new system, extending line length for a multi-room layout, or navigating obstacles in a retrofit project, the MRCOOL MC50-1412 offers the reliability, compatibility, and performance HVAC professionals and serious DIY installers trust.
KEY FEATURES & BENEFITS
- 50-Foot Extended Length – Ideal for long-run installations
- Designed for 9k, 12K & 18K Mini Splits – Proper sizing for efficiency
- 1/4" Liquid × 1/2" Suction Lines – Balanced refrigerant flow
- Refrigeration-Grade Copper – Durable and corrosion-resistant
- Factory-Flared Ends – Secure, leak-resistant connections
- OEM MRCOOL Accessory – Trusted system compatibility
- Flexible Routing – Simplifies complex installations
TECHNICAL SPECIFICATIONS
- Brand: MRCOOL
- Series: Mini Split Line Set
- Model: MC50-1412
- 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: 1/2"
- Suction Line Fitting: 5/8"
- Fitting Type: Flared
- Refrigerant: Not pre-charged
MATERIAL & FINISH
- Material: Copper
- Color: Copper
- Color Family: Bronze / Copper Metallic
SAFETY & COMPLIANCE
- 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: 3.00 in
- Weight: 25 lbs
FREQUENTLY ASKED QUESTIONS
Q: What size mini split systems is this line set for?
A: This line set is designed for 9,000, 12,000 and 18,000 BTU mini split systems.
Q: Are the line ends flared from the factory?
A: Yes. Both the liquid and suction lines come factory-flared for standard mini split connections.
Q: Can this 50-ft line set be shortened?
A: Yes, but it must be cut and re-flared properly by a qualified installer.
Q: Is this an OEM MRCOOL line set?
A: Yes. This is a genuine MRCOOL OEM accessory designed for proper fit and performance.
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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