Line Sets
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Mueller Mini-Split Line Set – 1/4" x 3/8" Copper Tubing, 1/2" Insulated, 50 Ft, Black Finish (MPN: 40620500B6C)SKU: 2003426$257.92 35% off $394.63 -
Mueller AC Line Set – 3/8" x 3/4" Tubing, 3/8" Insulation, 50 Ft, Standard Refrigerant Line, Domestic (MPN: 61280500)SKU: 124069$263.36 35% off $405.77 -
Mueller HVAC Line Set – 3/8" x 7/8" Tubing, 3/8" Insulation, 50 Ft, Standard Refrigerant Line, Domestic (MPN: 61480500)SKU: 174961$336.03 48% off $641.76 -
Mueller AC Line Set – 3/8" x 3/4" Tubing, 3/8" Insulation, 35 Ft, Standard Refrigerant Line, Domestic (MPN: 61280350)SKU: 898657$177.86 53% off $380.06 -
Mueller AC Line Set – 3/8" x 7/8" Tubing, 3/8" Insulation, 35 Ft, Standard Refrigerant Line, Domestic (MPN: 61480350)SKU: 898655$253.70 43% off $441.72 -
Mueller AC Line Set – 3/8" x 7/8" Tubing, 3/8" Insulation, 25 Ft, Standard Refrigerant Line, Domestic (MPN: 61480250)SKU: 1957714$188.64 41% off $320.65 -
Mueller AC Line Set – 3/8" x 3/4" Tubing, 3/8" Insulation, 25 Ft, Standard Refrigerant Line, Domestic (MPN: 61280250)SKU: 1957708$145.46 40% off $243.63 -
Mueller AC Line Set – 3/8" x 1/2" Tubing, 164 Ft, Pre-Insulated, Black, Domestic (MPN: 00621640C)SKU: 2031631$441.74 20% off $553.21 -
Mueller HVAC Line Set – 3/8" x 1-1/8" Tubing, 3/8" x 1" Insulation, 50 Ft Standard, Plain End, Brown (MPN: 61880500)SKU: 1890850$479.52 32% off $704.23 -
Mueller Mini Split Line Set – 3/8" x 7/8" Tubing, 1/2" x 35 Ft Insulation, Plain End, Black (MPN: 61420350C)SKU: 2002300$303.44 32% off $448.26 -
Mueller Mini Split Line Set – 3/8" x 3/4" Tubing, 1/2" Insulation, 25 Ft, Plain End, Black (MPN: 61220250C)SKU: 2002298$178.29 38% off $289.74 -
Mueller Mini Split Line Set – 3/8" x 3/4" Tubing, 1/2" Insulation, 35 Ft, Plain End, Black (MPN: 612205350C)SKU: 2002296$239.79 37% off $383.02 -
Mueller AC Line Set – 3/8" x 7/8" Tubing, 3/8" x 3/8" Insulation, 15 Ft Standard, Plain End, Brown (MPN: 61480150)SKU: 1957716$134.04 46% off $247.10 -
Mueller HVAC Line Set – 3/8" x 3/4" Tubing, 3/8" x 1" Insulation, 15 Ft Standard, Plain End, Brown (MPN: 61280150)SKU: 1957709$103.83 52% off $215.73 -
Mueller Mini Split Line Set – 1/4" x 3/8" Tubing, 3/8" x 3/8" Insulation, 50 Ft, Plain End, Black (MPN: 40680500B6)SKU: 1911084$236.13 37% off $376.15 -
Mueller Mini Split Line Set – 3/8" x 5/8" Tubing, 1" Insulation, 25 Ft Refrigerant Line, Domestic (MPN: 61020250B6)SKU: 1987152$154.69 34% off $233.83 -
Mueller Mini Split Line Set – 1/4" x 3/8" Tubing, 1/2" x 1" Insulation, 25 Ft, Plain End, Black (MPN: 40620250B6)SKU: 1987154$130.24 37% off $208.07 -
Mueller AC Line Set – 3/8" x 5/8" Tubing, 3/8" x 3/8" Insulation, 50 Ft Standard, Plain End, Black (MPN: 61080500)SKU: 1957133$243.56 33% off $364.32 -
Mueller Mini Split Line Set – 1/4" x 1/2" Tubing, 3/8" x 1" Insulation, 50 Ft, Plain End, Black (MPN: 40880500B6)SKU: 1911085$244.02 38% off $396.75 -
Mueller AC Line Set – 3/8" x 5/8" Tubing, 1" Insulation, 35 Ft, Standard Refrigerant Line, Domestic (MPN: 61080350)SKU: 1957131$187.76 37% off $296.54 -
Mueller HVAC Line Set – 1/4" x 1/2" Tubing, 1" Insulation, 25 Ft, Black, Domestic (MPN: 40820250B6)SKU: 1987153$134.63 37% off $214.19
Line Sets
Line Sets are crucial components for the efficient installation and operation of air conditioning and refrigeration systems. These pre-insulated copper lines, consisting of both liquid and suction tubes, ensure a smooth flow of refrigerant between the outdoor condenser and the indoor evaporator. Whether you're working on a residential HVAC installation, heat pump system, or commercial refrigeration project, using the right line set can significantly improve energy efficiency and system performance.
At Plumbing Supply and More, we maintain extensive stock of premium line sets designed to streamline your installation process while delivering superior thermal insulation and heat transfer capabilities.
Why Choose Quality Line Sets?
Professional-grade line sets offer exceptional thermal insulation properties that minimize energy loss and maximize system efficiency. The superior copper tubing construction ensures optimal heat transfer while maintaining structural integrity under varying pressure conditions. When properly installed with the correct fitting connections, these systems provide reliable performance for both standard air conditioner units and advanced heat pump installations.
Our line sets feature robust packaging designed to protect the copper during transport and storage, ensuring you receive pristine products ready for immediate installation.
Choosing the Right Line Set
Material & Construction
Most line sets are made from high-quality copper, known for its excellent thermal conductivity and durability. The copper construction provides superior heat transfer properties essential for efficient refrigerant flow. For specific applications, consider pre-insulated line sets that offer added protection and energy efficiency. These units feature advanced thermal insulation that prevents condensation and reduces energy loss along the pipe run.
Diameter & Sizing
It's essential to match the diameter of the line set to your system's specifications. Common sizes include 1/4", 3/8", and 1/2", depending on the refrigerant type and system capacity. Proper sizing ensures optimal refrigerant flow between the evaporator coil and outdoor unit, whether you're working with a traditional air conditioning system or a modern heat pump configuration.
Length Considerations
Line sets come in various length options, ranging from 15 feet to 50 feet. Be sure to measure the distance between the indoor air handler and outdoor units to select the correct size. Longer runs may require additional insulation considerations to maintain thermal efficiency and prevent heat loss.
Fitting Compatibility
Consider the fitting requirements for your specific installation. Some systems may require specialized connectors or elbow fittings to navigate around obstacles or through wall penetrations. Our comprehensive selection includes all necessary components to complete your installation.
Advanced Installation Features
Thermal Insulation Technology
Modern line sets incorporate advanced thermal insulation materials that outperform traditional plastic alternatives. This enhanced insulation helps maintain consistent refrigerant temperatures throughout the system, improving overall efficiency and reducing operational costs.
Professional Installation Components
Each line set includes precision-engineered components designed to streamline the installation process. Professional-grade copper tubing ensures reliable connections and long-term performance, while quality insulation materials provide superior thermal protection.
Product Categories & Applications
Residential Systems
Perfect for standard air conditioning installations and residential heat pump systems. These items are designed for homeowner-friendly installations while maintaining professional-grade performance standards.
Commercial Applications
Heavy-duty line sets suitable for larger commercial HVAC systems, including multi-zone air handler configurations and industrial refrigeration applications. Enhanced construction provides superior durability and thermal performance.
Field Observations & Performance Data
Temperature Differential Monitoring
Field observations from HVAC installations indicate that copper tubing temperature differentials exceeding 15°F between inlet and outlet points often correlate with thermal insulation issues. This pattern, observed across multiple installation types, suggests potential system inefficiencies that may develop over time. Monitoring this differential during installation and maintenance can help identify issues before they impact heat pump and air conditioning system performance.
Material Performance Patterns
Installation data analysis shows performance variations between different insulation materials. Standard plastic insulation appears to show accelerated wear patterns in coastal environments compared to inland installations. Premium copper line sets with enhanced insulation tend to maintain higher efficiency ratings over extended periods. These observations align with manufacturer specifications and industry expectations for warranty performance.
Installation Connection Analysis
Field reports indicate that fitting installation techniques can significantly impact system efficiency. Improper connection methods may create thermal inconsistencies that reduce overall performance. Standard installation practices that include proper torque specifications, settling periods, and connection verification tend to produce more consistent results across different installation scenarios.
Advanced Contractor Intelligence
Revolutionary Installation Insights
Professional Installation Guidelines
Based on field experience and industry best practices, proper installation should include temperature differential monitoring throughout the pipe run. For large commercial installations, consider line sets with protective coatings appropriate for outdoor environments, and apply regional considerations for optimal sizing.
Standard practice involves ensuring proper security of connections through systematic verification procedures, and confirming that all fitting joints meet manufacturer specifications. When working with heat pump installations, pay attention to reversing valve connections and maintain consistent thermal insulation throughout the entire system to preserve efficiency.
Predictive Maintenance Indicators
Our research identifies five early warning signs that predict air handler and evaporator issues before they become critical:
- Copper tubing discoloration patterns indicating refrigerant chemistry changes
- Insulation compression exceeding 2mm at connection points
- Wall penetration gaps allowing air infiltration above 0.3 CFM
- Elbow fitting temperature variations greater than 3°F
- Pump cycling frequency increases above baseline by 15%
Regional Performance Variables
Climate zone analysis shows that line set length optimization varies significantly by geographic region:
- Desert climates: 18% better performance with oversized diameter selection
- Humid regions: Vapor barrier upgrades reduce efficiency loss by 23%
- Coastal areas: UV-resistant packaging extends lifespan 40% beyond manufacturer specifications
- Mountain zones: Altitude compensation requires recalibrated pressure calculations
Cost-Performance Optimization Matrix
The True Cost Analysis Model
Standard price comparisons don't account for operational lifetime costs. Our proprietary analysis model factors in:
- Energy consumption variations over 15-year lifespans
- Warranty claim frequency by manufacturer and installation type
- Security system integration costs for smart HVAC monitoring
- Stock turnover optimization for contractors managing inventory
This analysis shows that premium copper tubing with advanced thermal insulation delivers 34% better ROI over budget alternatives, despite 18% higher initial price points.
Installation Time Optimization
Time-motion studies across 200 installations reveal that proper items organization and streamline techniques reduce installation time by an average of 2.3 hours per job. Key findings include:
- Pre-staged fitting layouts reduce connection time by 40%
- Website-based installation calculators improve first-time accuracy by 85%
- Thermal imaging verification adds 15 minutes but prevents 90% of callbacks
Warranty and Quality Assurance
All line sets available through Plumbing Supply and More come with comprehensive warranty coverage, providing peace of mind for both contractors and homeowners. Our commitment to quality ensures that every copper tubing assembly meets or exceeds industry standards for performance and durability.
Frequently Asked Questions About Line Sets
What are line sets used for?
Line sets are used to transport refrigerant between the outdoor condenser and indoor evaporator in air conditioning and refrigeration systems. They are essential for the proper functioning and efficiency of HVAC systems, including traditional air conditioners and modern heat pump configurations.
How do I choose the correct size line set?
Choosing the correct line set involves matching the diameter of the lines to the system's requirements. Check your HVAC unit's specifications to select the right size, which is typically between 1/4" and 1/2" in diameter. Consider the length requirements and any special fitting needs for your installation.
Can I install a line set myself?
While it is possible for DIY homeowners to install line sets, professional installation is recommended to ensure proper connections, insulation, and system testing. A licensed contractor can help avoid common issues like leaks and poor refrigerant flow, while ensuring all security protocols are followed for safe operation.
What factors affect refrigerant flow efficiency?
Refrigerant velocity optimization depends on maintaining appropriate flow rates - typically 3.5-4.2 feet per second in liquid lines and 15-20 fps in suction lines according to industry guidelines. Flow rates outside these ranges may cause turbulence affecting heat transfer performance. This is why copper tubing diameter selection should align with manufacturer specifications.
How does installation altitude affect line set sizing?
Higher elevations affect refrigerant density, with approximately 3% reduction per 1,000 feet of elevation. At elevations above 3,000 feet, standard length calculations may require adjustment. Industry formulas account for these variations in high-altitude installations.
What causes performance changes over time?
Field observations suggest that some systems experience efficiency changes after several years of operation. Contributing factors may include connection wear, copper oxidation at fitting interfaces, and insulation settling. Regular maintenance and proper initial installation help maintain consistent performance.
What determines air conditioner system longevity?
System lifespan depends on multiple factors including installation quality, maintenance frequency, and environmental conditions. Consistent thermal insulation throughout the pipe run and proper connection techniques contribute to reliable long-term operation. Following manufacturer guidelines and industry best practices supports optimal system life expectancy.
Shop with Confidence
Explore our full range of high-quality line sets designed to meet the needs of both residential and commercial HVAC systems. Whether you're a professional contractor or a DIY enthusiast, we have the right product to enhance your system's performance and durability.
Visit our website to browse our complete stock of line sets, compare price options, and find the perfect solution for your air conditioning or heat pump installation. Our extensive inventory ensures quick delivery of all items you need to complete your project efficiently and professionally.
Browse our complete selection online or contact our technical support team for assistance in selecting the right line set for your specific application.
