100 ft 1/4" x 3/8" Mini Split Long Line Set | Pre-Insulated Copper Refrigerant Pipe for HVAC Systems

Need a long-distance HVAC line set for mini split installation?
This 100 ft 1/4" x 3/8" mini split long line set is engineered for extended piping applications, offering high efficiency, durability, and easy installation.

Ideal for 9,000–12,000 BTU (0.75–1 Ton) mini split systems, it ensures smooth refrigerant flow even across long distances.

The Mini Split Long Line Set is twin already. So buy it now.

100 ft Long Line Set for Extended HVAC Installations

This extra-long 100 ft copper line set is perfect for:

• Large residential HVAC installations

• Multi-room mini split systems

• Buildings with long piping requirements

Designed for installations where indoor and outdoor units are far apart

99.9% Pure Copper Tubing (ASTM B280 & C12200 Certified)

Manufactured with premium-grade copper, this line set provides:

• Excellent thermal conductivity

• High pressure resistance

• Leak-proof performance

✔ Meets ASTM B280 & C12200 standards

Ensures long-lasting performance and system reliability

High Pressure Rating for Modern Refrigerants (R410A & R32 Ready)

Built to support advanced HVAC systems:

• Pressure rating: 2100–7000 PSI

• Compatible with R410A and R32 refrigerants

• Stable operation under high load

Ideal for modern energy-efficient air conditioning systems

99.9% Pure Copper

White PE Insulated Pipe

Plastic Cap

Features of pipe insulation tubing:

Machines for the production of thermal insulation pipes

warehouse for insulation pipes

Inner Layer Insulated Pipe

Pre-Insulated Copper Line Set for Maximum Energy Efficiency

This product features high-density insulation that:

• Reduces thermal loss

• Prevents condensation

• Maintains consistent refrigerant temperature

✔ Operating temperature: -40°C to 120°C

Improves overall system efficiency and performance

UV-Resistant & Fire-Rated Insulation for Outdoor Use

Designed for durability in harsh environments:

• UV-resistant outer layer

• Flame-retardant insulation (UL94, ASTM E84 compliant)

• Moisture-proof structure

Suitable for both indoor and outdoor installations

Ideal Line Set Size for 9K–12K BTU Mini Split Systems

This configuration includes:

• 1/4" liquid line

• 3/8" suction line

Commonly used for:

• 0.75–1 Ton mini split AC units

• 9,000–12,000 BTU systems

Ensures proper refrigerant flow and system efficiency

3-Layer Insulation Structure for Long-Term Protection

Advanced insulation design includes:

• Outer Layer: UV-resistant PE film

• Middle Layer: IXPE foam insulation

• Inner Layer: Closed-cell moisture barrier

✔ Waterproof
✔ Anti-corrosion
✔ Noise reduction
✔ Shock absorption

Built for long-term durability

Flexible Copper Tubing for Easy Installation

✔ Soft annealed copper for easy bending
✔ Twin-line design for quick installation
✔ Pre-insulated to reduce labor

Saves installation time and cost

Compatible with Multiple HVAC & Refrigeration Systems

Widely used in:

• Ductless mini split systems

• Heat pumps

• Central air conditioning

• Refrigeration systems

One solution for multiple HVAC applications

Wide Size Range & Custom Length Options Available

We support OEM customization:

• Sizes: 1/4" – 1 1/8"

• Lengths: 15m / 20m / 25m / 30m / 50m / 100 ft

• Insulation thickness options

Perfect for project-based supply and wholesale buyers

Mini Split Line Set

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

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

1/4 + 5/8 Copper line set 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 pipe 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 HVAC lineset 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 HVAC lineset 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.

OEM & ODM Mini Split Line Set Manufacturer

Grow your HVAC business with:

• Private label branding

• Logo printing on insulation

• Custom packaging

• Bulk production capacity

Ideal for distributors and HVAC brands

Designed for Global HVAC Markets & Extreme Environments

This line set performs reliably in:

• Tropical climates (humidity resistance)

• Desert environments (heat resistance)

• Coastal regions (corrosion protection)

Built for worldwide use

HVAC Line Set Size Selection Guide

• 1/4" + 3/8" → 9K–12K BTU (This Product)

• 1/4" + 1/2" → 12K–18K BTU

• 1/4" + 5/8" → 24K–30K BTU

• 3/8" + 5/8" → 36K–48K BTU

• 3/8" + 7/8" → 72K–96K BTU

Helps buyers quickly select the correct size

Reduce Installation Failures & Improve HVAC Efficiency

Using high-quality copper line sets helps:

✔ Prevent refrigerant leaks
✔ Reduce energy loss
✔ Improve cooling performance
✔ Extend system lifespan

Small upgrade, big performance impact

Get a Quote for 100 ft Mini Split Long Line Set

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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.Q:What is your payment terms?

A:TT,L/C AT SIGHT,CREDIT CARD etc

2.Q:What is your delivery terms?

A:EXW, FOB, CFR, CIF etc

3.Q:Are you trading company or manufacturer?

A:Manufacturer

4.Q:May I get a sample?

A:Yes, we can send you 3pieces free samples.

   You just charge for the express cost is ok.

5.Q:Can I print my logo?

A:Yes of cause, we accept OEM and ODM.

6.Q:How long is your delivery time?

A:Usually 15-20days, if urgent, we can arrange to do in advance and delivery fast.