82 Ft 1/4" x 3/8" Mini Split Line Set for HVAC & Air Conditioning Systems

Looking for a reliable long-distance HVAC line set for small-capacity systems? This 82 ft 1/4" x 3/8" mini split line set is engineered for efficient refrigerant flow, easy installation, and long-term durability—perfect for residential ductless air conditioning systems.

Product Overview – 82 ft Pre-Insulated Copper Line Set

This mini split line set is designed to connect indoor and outdoor units efficiently, ensuring stable system performance even over extended distances.

• Liquid Line: 1/4" (6.35 mm)

• Suction Line: 3/8" (9.52 mm)

• Length: 82 ft (25 meters)

• Material: 99.9% pure copper

• Structure: Twin insulated copper pipes

This size is one of the most commonly used configurations for ductless systems, especially for small-capacity units.

High-Quality Copper Tubing – Designed for Performance

99.9% Pure Copper Meets ASTM Standards

Manufactured using high-purity C12200 copper, this line set complies with ASTM B280 standards, ensuring:

• Excellent thermal conductivity

• Strong corrosion resistance

• Long service life

This guarantees reliable performance in both residential and light commercial HVAC systems.

High Pressure Resistance for Modern Refrigerants

With a pressure rating of 2100–7000 PSI, this copper line set supports modern refrigerants such as R410A, ensuring safe and efficient operation.

Advanced Insulation Technology for Energy Efficiency

UV-Resistant & Weatherproof Insulation

The insulation is made from high-density PE or polypropylene material, offering:

• UV resistance for outdoor installation

• Flame-retardant performance (UL94 compliant)

• Temperature resistance from -40℃ to 120℃

Triple-Layer Insulation Structure

• Outer Layer: UV-resistant embossed PE film

• Middle Layer: IXPE foam insulation

• Inner Layer: Airtight closed-cell structure

This design ensures long-lasting insulation performance and environmental protection.

Moisture & Condensation Protection

Closed-cell insulation prevents condensation and moisture penetration, protecting both the copper pipe and building structures.

99.9% Pure Copper

Black Rubber Insulated Pipe

Plastic Cap

Features of pipe insulation tubing:

● Pipe Insulation, Material Black Rubber, Temp Range -40 Degrees to 120 Degrees.

● The pipe insulation has a better function of moisture condensation. Insulation material is both the insulation layer and moisture-proof layer.

● There is no need to drop the water vapor permeation protective layer so that it has a better moisture condensation function.

Key Benefits of 82 ft Mini Split Line Set

Ideal for Long Distance Residential Installations

The 82 ft length is perfect for:

• Apartments and houses

• Multi-room installations

• Complex routing projects

Reducing joints helps minimize refrigerant leakage risks.

Optimized for Small HVAC Systems

The 1/4" + 3/8" size is typically used for:

• 9000 BTU mini split systems

• 12000 BTU air conditioners

• 18000 BTU systems (depending on configuration)

Improve Energy Efficiency & System Performance

Pre-insulated copper tubing reduces heat exchange, allowing your system to maintain optimal efficiency and reduce energy consumption.

Easy Installation & Reduced Labor Cost

Factory-insulated pipes eliminate additional wrapping, saving installation time and labor costs.

Durable, Corrosion-Resistant & Long-Lasting

Copper’s natural corrosion resistance ensures a lifespan of 15–20 years or more with proper installation.

HVAC Applications – Wide Compatibility

This 82 ft 1/4" x 3/8" line set is widely used for:

• Ductless mini split systems

• Heat pumps

• Residential HVAC installations

• Small commercial cooling systems

It is ideal for 0.75–1.5 ton air conditioning systems.

Technical Specifications

OEM Customization & Manufacturing Capabilities

Looking to grow your HVAC brand?

We offer:

• Custom insulation colors (black / white)

• Logo printing on insulation

• Custom lengths (15m–50m+)

• OEM & ODM manufacturing

In-house insulation production ensures consistent quality and flexible customization.

Mini Split Line Set

1/4 + 3/8 Mini split line set used for 0.75TON - 1.0TON mini split air conditioner.

1/4 + 1/2 Insulated copper line set used for 1.5TON - 2.0TON mini split air conditioning.

1/4 + 5/8 Insulated copper piping used for 2.0TON - 2.5TON split air conditioner system.

3/8 + 5/8 Insulated copper tube apply for 3.0TON - 4.0TON ductless mini split air conditioner.

3/8 + 3/4 Insulated copper tubing used for 4.5TON - 6.0TON split air conditioner installation.

3/8 + 7/8 Insulated copper piping apply for 6.0TON - 8.0TON ductless mini split air conditioner.

Air conditioning copper line sets 1/4 + 3/8 used for 0.75P and 1P split air conditioning.

Copper pipe kit 1/4 + 1/2 commonly used for 1.5P and 2P mini split air conditioners.

1/4 + 5/8 Insulated copper line set used for 2P and 2.5air conditioner system.

3/8 + 5/8 Mini-split copper line set apply for 3P and 4P ductless mini split air conditioner.

3/8 + 3/4 Copper pipe kit used for 4.5P and 6P split aircon installation.

3/8 + 7/8 Insulated copper piping apply for 6P - 8p TON ductless mini split air conditioner.

1/4 + 3/8 Mini split line set used for 9000BTU and 12000 BTU split air conditioner.

All copper line set 1/4 + 1/2 commonly used for 12000 BTU and 18000 BTU mini split air conditioners.

1/4 + 5/8 Insulated copper line set used for 24000 BTU and 30000 BTU air conditioner system.

3/8 + 5/8 Mini-split line set apply for 36000 BTU and 48000 ductless air conditioner.

3/8 + 3/4 Mini split line set used for 54000 BTU and 72000 split air conditioner installation.

3/8 + 7/8 Insulated copper piping apply for 72000 BTU - 96000 BTU ductless mini split air conditioner.

Aircon copper line set 1/4 + 3/8 used for 9K and 12K split air conditioner.

High quality copper line set 1/4 + 1/2 commonly used for 12K and 18K mini split air conditioners.

1/4 + 5/8 Insulated copper line set used for 24K and 30K air conditioner system.

3/8 + 5/8 Mini-split line set apply for 36K and 48K ductless air conditioner.

3/8 + 3/4 Mini split line set used for 54K and 72K split air conditioner installation.

3/8 + 7/8 Insulated copper pipe apply for 72K - 96K ductless mini split air conditioner.

Why Choose DABUND Mini Split Line Set?

• Over 15 years of HVAC manufacturing experience

• Full in-house production (copper + insulation)

• Weekly global shipments

• Strict quality control standards

• Competitive factory pricing

DABUND provides a one-stop HVAC solution for contractors, distributors, and OEM buyers.

DABUND FACTORY

We produce Insulated Copper Pipe, Mini Split Line Set and Aluminum Pipe and HVAC Parts

SGS Certificate

Mini Split Line Set is made of Polypropylene or Black Rubber with UV Resistant, meets ASTM E 84, UL94, ASTM D1056 and ASTM G 21

Exhibition

We join the exhibitions all over the word, just to facilitate customers to experience our mini split line set face to face.

FAQ

1.What is an 82 ft 1/4" x 3/8" mini split line set used for?

This line set is used to connect indoor and outdoor units in mini split air conditioning systems. It allows refrigerant to circulate efficiently and supports both cooling and heating modes.

2.What size HVAC system is this line set suitable for?

The 1/4" + 3/8" configuration is typically used for 9000–18000 BTU systems, making it ideal for residential applications.

3.Why choose an 82 ft long line set?

An 82 ft line set is ideal for installations where the indoor and outdoor units are far apart. It reduces the need for additional connections, lowering leak risks and improving reliability.

4.Is this copper line set compatible with R410A refrigerant?

Yes, it supports high-pressure refrigerants like R410A due to its strong pressure rating and compliance with HVAC standards.

5.What type of insulation is used in this line set?

The insulation is made of UV-resistant PE or polypropylene foam with a closed-cell structure, providing thermal insulation, moisture resistance, and durability.

6.Can this mini split line set be used outdoors?

Yes, the UV-resistant insulation makes it suitable for outdoor installation, protecting against sunlight, rain, and temperature fluctuations.

7.What are the advantages of pre-insulated copper line sets?

Pre-insulated line sets save installation time, ensure consistent insulation quality, reduce energy loss, and prevent condensation issues.

8.Can I customize this HVAC line set for my brand?

Yes, OEM and ODM services are available, including custom branding, insulation color, printing, and packaging.

9.How long does a mini split line set last?

With proper installation, it can last over 15–20 years due to its corrosion resistance and durable insulation materials.