3/8" x 7/8" x 100 ft AC Line Set | Heavy-Duty Pre-Insulated Copper Refrigerant Line for HVAC Systems

Looking for a long-distance HVAC refrigerant line solution?
This 3/8" x 7/8" x 100 ft AC line set is engineered for extended installations, delivering reliable performance, high pressure resistance, and long-term durability.

Designed for 6–8 Ton (72,000–96,000 BTU) HVAC systems, it ensures stable refrigerant flow even across long piping distances.

100 ft Long Line Set for Extended HVAC Installations

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

• Large residential HVAC systems

• Commercial air conditioning projects

• Multi-story or rooftop installations

Perfect when indoor and outdoor units are far apart, without sacrificing efficiency.

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

Manufactured using high-purity copper, this line set provides:

• Excellent thermal conductivity

• Strong pressure resistance

• Leak-free performance

✔ Meets ASTM B280 & C12200 standards for HVAC applications

Result: Efficient cooling + longer system lifespan

High Pressure Rating for R410A & R32 Refrigerants

Built for modern HVAC systems:

• Pressure rating: 2100–7000 PSI

• Compatible with high-efficiency refrigerants

• Stable operation under demanding conditions

Ensures safe and reliable performance

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.

Advanced Pre-Insulated Copper Line Set for Energy Efficiency

The tubing features high-density insulation that:

• Reduces energy loss

• Prevents condensation

• Maintains refrigerant temperature

✔ Working temperature range: -40°C to 120°C

Improves overall HVAC system efficiency

UV-Resistant & Fire-Rated Insulation for Outdoor Applications

Engineered for harsh environments:

• UV-resistant outer layer

• Flame-retardant (UL94, ASTM E84 compliant)

• Moisture-proof structure

Suitable for indoor & outdoor installations worldwide

Ideal Line Set Size for 6–8 Ton HVAC Systems

This configuration includes:

• 3/8" liquid line

• 7/8" suction line

Commonly used for:

• 72,000 – 96,000 BTU systems

• 6–8 Ton air conditioners

• Commercial and industrial HVAC projects

Ensures optimal refrigerant flow and performance

Compatible with Multiple HVAC & Refrigeration Applications

Widely used in:

• Ductless mini split systems

• Heat pumps

• Central air conditioning systems

• Commercial refrigeration

One versatile solution for multiple applications

Flexible Copper Tubing for Easy Installation

✔ Soft annealed copper for easy bending
✔ Twin-line design (liquid + suction line)
✔ Simplified installation process

Saves time and reduces labor costs

High-Density Insulation with Moisture & Corrosion Protection

Key insulation benefits:

• Closed-cell structure for moisture resistance

• Anti-corrosion and anti-aging properties

• Noise reduction and vibration absorption

Protects your HVAC system long-term

Wide Size Range & Custom Length Options Available

We support full customization:

• Sizes: 1/4" – 1 1/8"

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

• Insulation thickness options

Ideal for OEM projects and wholesale buyers

Mini Split AC 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 AC 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 AC 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.

OEM & ODM AC Line Set Manufacturer for Bulk Orders

Expand your HVAC business with custom solutions:

• Private label branding

• Logo printing on insulation

• Custom packaging

• Bulk production support

Perfect for importers, distributors, and HVAC brands

Built for Extreme Environments & Global Markets

Designed to perform in:

• Tropical climates (high humidity)

• Desert regions (high temperature)

• Coastal areas (corrosion exposure)

Reliable performance anywhere in the world

HVAC Line Set Size Selection Guide

• 1/4" + 3/8" → 9K–12K BTU

• 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 (This Product)

Helps buyers quickly choose the correct size

Reduce Installation Failures & Improve HVAC Efficiency

Using a high-quality line set helps:

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

Small upgrade, big performance impact

Get a Quote for 3/8" x 7/8" x 100 ft AC Line Set

Looking for a reliable HVAC line set supplier?

Send your inquiry today
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Start your project with confidence

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

What is a 3/8" x 7/8" 100 ft AC line set used for?

This line set is used to connect indoor and outdoor units in HVAC systems, especially for 6–8 ton (72,000–96,000 BTU) air conditioners, providing efficient refrigerant flow over long distances.

When should I use a 100 ft HVAC line set?

A 100 ft line set is ideal when the distance between the indoor and outdoor units is long, such as in multi-story buildings, large homes, or commercial installations.

Why is insulated copper tubing important in HVAC systems?

Insulated copper tubing reduces heat loss, prevents condensation, and improves system efficiency. It also protects the pipe from environmental damage and corrosion.

What type of copper is used in AC line sets?

High-quality AC line sets use 99.9% pure copper (ASTM B280, C12200), ensuring durability, pressure resistance, and optimal thermal performance.

Is this line set compatible with R410A and R32 refrigerants?

Yes. This line set supports modern refrigerants like R410A and R32, thanks to its high pressure rating and strong copper construction.

Can I customize the AC line set for my brand?

Yes. Manufacturers offer OEM & ODM services, including custom length, insulation thickness, logo printing, and packaging for bulk orders.

How do I choose the correct AC line set size?

You should match the line set size with your HVAC system capacity. A 3/8" liquid line and 7/8" suction line is typically used for large systems (6–8 ton).

What are the advantages of using a pre-insulated line set?

Pre-insulated line sets:

• Save installation time

• Improve energy efficiency

• Reduce condensation issues

• Lower overall installation costs