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Mueller 40820500B6C AC Mini Split Line Set - 1/4" x 1/2" Tubing, 1/2" x 1/2" Insulation, 50 Ft Refrigerant Line, Black Finish, Domestic, Copper Reviews

4.8 Rating 97 Reviews
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Upgrade Your HVAC System with Our Premium Mini Split Line Set When it comes to ensuring optimal performance in your heat pump and air conditioning system, our Streamline® copper refrigerant line set is the premium choice that professionals trust. Designed for durability and efficiency, this mini-split line set is crafted from high-quality UNS C12200 copper tube, ensuring it meets the rigorous demands of both residential and commercial HVAC applications. With its nitrogen-purged design and pre-insulated ACR construction, this copper line set guarantees optimal cleanliness and liquid refrigerant flow — while the 1/2" closed-cell insulation maintains temperature integrity as gaseous refrigerant travels back through the suction line to the compressor. UL Recognized to 700 PSI maximum design pressure and compatible with R410A and R32, this line set is engineered to handle the demands of modern mini-split systems in any climate condition. Whether you're a professional contractor or a DIY homeowner, this kink resistant, cost-efficient line set simplifies your installation process — connecting your indoor evaporator unit to your outdoor condenser unit with reliable, leak-free performance across the full 50 ft run. Why Choose Our Premium Copper Tubing Line Set? ✅ Durable Construction – Made from high-quality UNS C12200 copper, ensuring long-lasting performance for heat pump applications. ✅ Nitrogen-Purged – Guarantees optimal cleanliness, meeting ASTM B280 standards for high-pressure refrigerant systems. ✅ Flexible Design – Allows for easier installation, even in challenging environments and tight spaces. ✅ Corrosion-Resistant – Built to withstand the toughest conditions, ensuring durability in all climates. ✅ Compatible with Multiple Refrigerants – Works seamlessly with R-32 and R-410A refrigerants for modern air conditioning units. ✅ Leak-Proof Construction – Minimizes refrigerant loss, maintaining optimal efficiency in your heat system. ✅ Industry Compliance – Complies with strict safety and performance standards for plumbing and HVAC applications. ✅ Versatile Applications – Ideal for both residential and commercial HVAC, heat pump, and mini split systems. Understanding AC Unit Line Set Applications

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“Installation was smooth, but I had to smooth out rough flares before attaching. Customer service was great.”
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Posted 2 years ago
BobInMaryland
Verified Reviewer
“Renovated our basement apartment and installed a system.”
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Posted 2 years ago
“The flanges looked questionable, so I remade all four with my tool.”
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Posted 2 years ago
“Excellent customer service experience and a fantastic, efficient product.”
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Posted 2 years ago
“I used the 15 ft line, and everything worked as expected.”
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Posted 2 years ago
“Used for connecting refrigerant between units. Pre-flared and insulated, making installation easy.”
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Posted 3 years ago
“Installed in a rental property; it operates well.”
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Posted 3 years ago
“Came with the kit I purchased. The service tech was impressed with the unit and install kit.”
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Posted 3 years ago