Choosing the right 50-foot mini split line set is crucial for connecting your mini split HVAC system’s indoor and outdoor units. These line sets often include dual copper pipes (1/4″ and 3/8″ outer diameters), thick protective insulation, and flare nuts for secure installation. Below is a summary table of top 50 ft mini split line sets that combine durability, insulation, and compatibility with modern HVAC systems, helping you make an informed decision.
| Product | Brand | Key Features |
|---|---|---|
| Della 50 Ft Mini Split Line Set | Della | Durable copper with triple-layer insulation; UV & weather resistant; flame retardant; -22℉ to 221℉ range |
| Mini Split Line Set 50ft 1/4″ & 3/8″ OD | HANSUM | Triple-layer protective cotton insulation; anti-cracking thick nuts; flared leak-free ends |
| ICOOL 50 Ft. Mini Split Line Set | ICOOL | Seamless copper; M1 flame retardant; ultra-wide working temperature -40℉ to 248℉; crack resistant |
| VEVOR 50FT Mini Split Line Set | VEVOR | ASTM compliant thick copper tubes; high/low pressure dual pipes; 50 ft length for long connections |
| ROVSUN 50 Ft Mini Split Line Set | ROVSUN | Triple-layer insulated cotton; corrosion-resistant copper; perfectly flared leak-proof ends; durable nuts |
Della 50 Ft Mini Split Line Set for HVAC Systems
The Della 50 Ft Mini Split Line Set features precision-engineered dual copper tubes sized 3/8″ and 1/4″ outer diameters with zero tolerance for a tight fit. The copper aluminum tubes have 0.5-inch thick walls that promote leak-proof durability and excellent thermal conductivity, making them ideal for tough installation environments.
This set comes with a triple-layer insulation system consisting of a 3/8″ thick white PE insulated coil, embossed polyethylene film, and weather-resistant foam. It is flame retardant, heat-insulating, and drip-reducing, protecting both walls and equipment while extending line service life.
Designed for all-weather operation, the copper tubes work well in temperatures ranging from -22℉ to 221℉ and are compatible with all refrigerants. A UV-resistant coating protects tubes from summer sun damage, while moisture resistance shields against winter corrosion.
HANSUM 50ft Mini Split Line Set with Thick Insulation
This HANSUM Mini Split Line Set includes 1/4″ and 3/8″ OD copper pipes with perfectly flared ends secured by flared nuts to ensure a leak-free connection. The nuts are thickened and anti-cracking for long-term reliability.
The line set benefits from triple-layer insulation comprising embossed polyethylene film, weather-resistant foam, and thickened insulating cotton, providing excellent thermal protection and durability during outdoor exposure.
Its robust build makes it appropriate for mini split AC systems or heat pumps with 9000 BTU capacity or similar.
ICOOL 50 Ft Mini Split Line Set with Flame Retardant Insulation
The ICOOL 50 Ft Mini Split Line Set features high-quality, seamless copper tubing with wall thicknesses of 0.65 mm for 1/4″ and 3/8″ tubes. It complies with ASTM B743 testing standards, guaranteeing durability without leaks.
It has a triple-layer insulation system: embossed polyethylene film, climate-resistant foam, and 3/8″ thickened insulated cotton that is M1 level flame retardant, corrosion resistant, and provides thermal insulation, shock absorption, and sound dampening.
This set operates reliably from as low as -40℉ to 248℉, ensuring no cracks or deformation during extreme temperature variations. It is compatible with all common refrigerants in HVAC systems.
VEVOR 50FT Mini Split Line Set with ASTM Copper Tubes
The VEVOR Mini Split Line Set spans 50 feet, making it ideal for long-distance connections between indoor and outdoor AC units. It contains high-pressure 1/4″ copper tubes and low-pressure 3/8″ tubes suitable for mini split AC systems up to 12,000 BTU.
Both tubes are made from thickened pure copper that meets strict ASTM standards, ensuring enhanced toughness and hardness. This prevents tube flattening during installation and use, offering a more reliable connection.
The triple-layer insulation safeguards the copper pipes against weather and aging, providing a longer lifespan.
ROVSUN 50 Ft Mini Split Line Set with Triple-Layer Insulation
The ROVSUN 50 Ft Mini Split Line Set utilizes seamless copper pipes designed for toughness and corrosion resistance. It includes both 1/4″ and 3/8″ OD copper tubes to cover high and low pressure refrigerant lines.
The line ends are mechanically flared to meet high connection standards and fitted with thickened anti-cracking nuts and protective caps to prevent dust ingress, ensuring stable and leak-free performance.
The tubing is protected by triple-layer insulated cotton featuring embossed polyethylene film and weather-resistant foam, providing excellent thermal insulation and aging resilience.
Buying Guide for Selecting a 50 Ft Mini Split Line Set
Copper Tube Quality and Thickness
The copper pipes’ quality is paramount. Look for ASTM standard compliant seamless copper tubes with wall thickness around 0.65mm to 0.7mm to resist leaks, flattening, and corrosion. Thicker copper enhances durability and pressure tolerance.
Insulation Type and Thickness
Reliable insulation protects against heat loss, condensation, and environmental damage. A triple-layer insulation system combining polyethylene film, weatherproof foam, and thickened insulating cotton is ideal. Insulation thickness around 3/8” helps minimize energy loss and prevents freezing or sweating.
Compatibility with Refrigerants and Temperature Range
Ensure the line set supports a wide temperature range (e.g., -40℉ to 248℉) and is compatible with modern refrigerants for efficiency. Flame retardant and UV resistant coatings add safety and outdoor durability.
Fittings and Leak Protection
Pre-flared copper pipe ends combined with anti-cracking thickened nuts ensure a tight, leak-free connection. Protective caps on fittings guard against dust contamination during and after installation.
Length and System Compatibility
50 ft line sets accommodate installations requiring longer distances between split AC units. Confirm the line size (1/4″ for high pressure, 3/8″ for low pressure) matches your specific mini split AC or heat pump model, usually for systems up to 12,000 BTU.
Additional Accessories and Installation Convenience
Some kits include wiring, drain hoses, wall sleeves, and wrapping strips to facilitate neat, efficient installations. These extras can save time and improve system performance.