Mueller AC Line Set – 3/8" x 7/8" Tubing, 3/8" Insulation, 35 Ft, Standard Refrigerant Line, Domestic (MPN: 61480350)

Built Tough – Mueller HVAC Line Set Delivers Unmatched Performance for HVAC Systems

When it comes to maintaining efficient cooling and reliable heating in HVAC systems, the Mueller Copper Line Set stands out as a premier choice for both seasoned HVAC professionals and dedicated DIY enthusiasts.

This high-quality copper tubing is meticulously engineered to meet the rigorous demands of modern HVAC and refrigeration applications, ensuring unwavering performance and exceptional durability throughout its service life.

Engineered for Excellence: The Mueller Copper Advantage

With its inherent flexibility and robust strength, the Mueller Copper AC Line Set is perfectly suited for high-demand environments where system integrity is paramount.

Crafted from UNS C12200 copper, it rigorously adheres to ASTM B280 specifications, a critical standard that guarantees superior pressure resistance and exceptional internal cleanliness.

This adherence ensures that the line set is not only durable but also optimized for the safe and efficient transport of refrigerants.

Whether you are a professional contractor seeking dependable, high-performance materials for critical installations or a homeowner embarking on a challenging DIY project, this line set is precisely designed to meet and exceed your expectations.

Its consistent quality minimizes installation headaches and contributes to the long-term reliability of the entire HVAC system.

Why Choose the Mueller Copper Line Set? Unpacking the Benefits

Mueller Industries has cultivated a reputation as a trusted leader in the plumbing and HVAC sectors for decades. 

Their unwavering commitment to quality, innovation, and customer satisfaction ensures that every product bearing the Mueller name meets the highest industry standards.

The Mueller Copper Line Set is a testament to this legacy, offering a suite of advantages:

✅ Superior Corrosion Resistance — The UNS C12200 copper tube, manufactured to ASTM B280 and ASTM B1003 standards, is meticulously engineered to withstand corrosive environmental factors and refrigerant line interactions — ensuring long-lasting operational integrity across diverse climates and HVACR applications.

✅ UL Recognized to 700 PSI — Rated to safely handle 700 PSI maximum design pressure, making this standard line set exceptionally suitable for a wide range of residential and commercial air conditioning and heat pump applications.

✅ Kink-Free Installation via Integrated Production Processes — Mueller Streamline Co.'s proprietary integrated production processes eliminate kinking during routing and bending — simplifying handling in confined spaces between your outdoor condenser unit and indoor evaporator unit without compromising structural integrity or pressure ratings.

✅ Guaranteed Leak-Free Performance — Precision manufacturing and secure flare connections minimize refrigerant loss, ensuring consistent liquid refrigerant and gaseous refrigerant flow throughout the heat exchange process for peak HVAC system efficiency.

✅ R410A and Synthetic Refrigerant Compatible — Purpose-built for R410A, other synthetic refrigerants, and sub-critical CO2 systems — future-proofing your air conditioning and heat pump installations for current and emerging refrigerant standards.

✅ 3/8" Elastomeric Insulation with UV Retardant — Factory-applied elastomeric insulation with UV retardant maintains optimal insulation thickness across the full 35 ft run, protecting refrigerant lines against weather resistance challenges and thermal energy loss.

✅ Plain End Design for Custom Connections — The plain end configuration gives professional contractors full flexibility over flare connections, custom ends, and custom connections — accommodating a wide variety of air conditioning and heat pump installation requirements on the job site.

✅ Larger Capacity System Ready — With a 3/8" liquid line and 7/8" suction line, this Streamline® line set is specifically sized for larger capacity systems, delivering optimal liquid refrigerant and gaseous refrigerant flow rates for high-demand residential and commercial HVACR applications.

✅ Made in USA — Backed by 10-Year Warranty — Every Streamline® line set is made in USA by Mueller Streamline Co. and backed by a 10-year limited warranty on the copper tube for complete professional and homeowner peace of mind.

Installation Considerations: Professionalism Meets DIY Preparedness

While the Mueller Copper Line Set is engineered for user-friendliness, we strongly recommend that installation be performed by a licensed plumber or certified HVAC professional. 

This ensures not only proper system function and optimal performance but also compliance with all relevant local building codes and safety regulations. Professional installation guarantees that the system's integrity is maintained from the outset.

For the dedicated DIY homeowner, thorough preparation is key. Ensure you have the correct tools, understand the specific requirements of your HVAC system, and allocate sufficient time to complete the installation meticulously.

Remember, even seemingly straightforward installations demand careful attention to detail to achieve a secure, efficient, and long-lasting result. Consulting manufacturer guidelines and reputable DIY resources is highly advised.

Insights for Professionals and DIYers Alike

For Professional Contractors:The Mueller Streamline® copper line set consistently meets the demanding performance requirements of professional job sites. UL Recognized to 700 PSI and engineered for R410A and other synthetic refrigerants, it delivers the durability and reliability that seasoned HVACR technicians depend on across residential and commercial air conditioning and heat pump installations.

The kink-free installation enabled by Mueller Streamline Co.'s integrated production processes means faster, cleaner routing on every job — saving valuable time and reducing labor costs. The plain end configuration offers full flexibility over custom ends and custom connections, accommodating virtually any installation requirement while the Damage Control Carton ensures safe, job-site-ready delivery every time.

For DIY Homeowners:If you're planning your first air conditioning or heat pump installation, preparation is everything. Before starting, ensure you have the right tools on hand — a pipe cutter, flaring tool, deburring tool, and needle-nose pliers are essential for clean, leak-free flare connections. Take your time routing the 3/8" liquid line and 7/8" suction line carefully, and follow all local HVAC codes and refrigerant handling guidelines.

Backed by a 10-year limited warranty on the copper tube and made in USA by Mueller Streamline Co., this line set gives DIY homeowners the confidence of professional-grade quality on every install.

Key Features at a Glance

• ✅ Premium Copper Construction – Guarantees exceptional durability, superior heat transfer, and inherent resistance to corrosion for extended system life.
• ✅ Optimized Flexibility – Facilitates easy and precise routing through tight spaces and complex architectural layouts, simplifying installation challenges.
• ✅ Adherence to Industry Standards – Manufactured in compliance with ASTM B280 specifications, providing assurance of quality, safety, and performance.
• ✅ Enhanced Refrigerant Flow Dynamics – Engineered to promote efficient refrigerant circulation, optimizing system performance and maximizing energy efficiency.
• ✅ Versatile Application Range – Perfectly suited for both new HVAC system installations and replacements of existing line sets, offering broad utility.

Invest in Reliability: Secure Your HVAC System's Performance

Don’t delay addressing potential vulnerabilities in your HVAC system. Secure the Mueller Air Conditioning Line Set today and ensure your cooling and heating system operates at its absolute best, providing consistent comfort and efficiency year-round.

With its proven performance, exceptional reliability, and adherence to stringent industry standards, choosing the Mueller Copper Line Set is a wise and valuable investment in the comfort and efficiency of your home or business.

Ready to Upgrade Your HVAC System?

Experience the Mueller difference in performance and reliability. Get your Mueller Copper Line Set today!