100 ft 1/4" x 3/8" Mini Split Line Set Installation Kit – Insulated Copper Pipe for HVAC Systems

Looking for a reliable 100 ft mini split line set installation kit? This 1/4" x 3/8" insulated copper line set is designed for easy installation, efficient refrigerant flow, and long-term HVAC performance.

Perfect for ductless mini split systems, heat pumps, and residential HVAC projects, this product ensures stable operation even in extended installations.

Product Overview – 100 ft Mini Split Line Set for HVAC Installation

This mini split line set consists of two copper pipes (liquid + suction line) pre-insulated to enhance thermal efficiency and simplify installation.

Manufactured from 99.9% pure copper (C12200) and compliant with ASTM B280, it ensures excellent heat transfer, corrosion resistance, and long-term reliability.

Key Features of 1/4" x 3/8" x 100 ft Mini Split Line Set

99.9% Pure Copper for Maximum Efficiency

High-purity copper provides:

• Superior thermal conductivity

• Reduced energy loss

• Long service life

Think of it as a high-efficiency pathway for refrigerant circulation.

ASTM B280 & C12200 Certified Copper Tubing

Built to meet global HVAC standards:

• ASTM B280 refrigeration tubing

• C12200 DHP copper

Ensuring safe and durable operation under high-pressure conditions.

High Pressure Rating (2100–7000 PSI)

Designed for modern refrigerants such as:

• R410A

• R32

With pressure tolerance far exceeding standard requirements (700 PSI), ensuring leak-free performance.

100 ft Length for Flexible Installation

The extended 100 ft design is ideal for:

• Long-distance installations

• Complex building layouts

• Multi-room HVAC systems

Perfect when installation flexibility is essential.

Standard Size for Small-Capacity Systems

• Liquid Line: 1/4" (6.35 mm)

• Suction Line: 3/8" (9.52 mm)

Typically used for:

• 9,000 – 12,000 BTU mini split systems

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 Insulation Technology for Maximum Performance

UV-Resistant & Flame-Retardant Insulation

insulation meets:

• ASTM E84

• UL94

• ASTM D1056

• ASTM G21

Operating temperature range: -40°C to 120°C, suitable for both indoor and outdoor installations.

High-Density Closed-Cell Insulation Structure

• Outer Layer: UV-resistant protective coating

• Inner Structure: Closed-cell polyethylene foam

Provides excellent thermal insulation and moisture resistance.

Condensation & Moisture Control

The insulation:

• Prevents water vapor penetration

• Reduces condensation buildup

• Protects copper pipes from corrosion

Result? Cleaner installations and improved system lifespan.

Applications – Where This Mini Split Line Set Is Used

Ductless Mini Split Air Conditioners

Perfect for residential cooling systems requiring reliable performance.

Heat Pump Systems

Supports both heating and cooling operations efficiently.

Centralized & Commercial HVAC Systems

Compatible with:

• Central air systems

• Air ducted units

• Refrigeration systems

Technical Specifications

• Product Name: Mini Split Line Set Installation

• Size: 1/4" + 3/8"

• Length: 100 ft (30 m)

• Material: 99.9% Pure Copper

• Standard: ASTM B280 / C12200

• Pressure Rating: 2100–7000 PSI

• Temperature Range: -40°C to 120°C

• Insulation: Polypropylene / PE Foam

• Application: HVAC & Refrigeration

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 This Mini Split Line Set from a Professional Manufacturer?

15+ Years HVAC Manufacturing Experience

Produced by a specialized manufacturer with extensive experience in:

• Insulated copper pipes

• HVAC line sets

• Global export supply since 2008

In-House Insulation Production

Ensures:

• Stable insulation quality

• Faster production timelines

• Custom branding capability

OEM & Custom Branding Available

Customize:

• Logo printing on insulation

• Pipe markings

• Packaging

Perfect for distributors and wholesalers.

Strong Global Supply Capability

• Weekly container shipments

• Reliable delivery timelines

• Scalable bulk production

Installation Tips for HVAC Professionals

Avoid Kinks and Sharp Bends

Improper bending can restrict refrigerant flow and reduce system efficiency.

Maintain Proper Bend Radius

Always follow recommended bending radius to avoid pipe damage.

Keep Pipe Ends Sealed

Factory caps prevent contamination and moisture ingress.

Ensure Proper Brazing & Connections

Leak-free joints are critical for long-term HVAC reliability.

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.

7.What is included in a mini split line set installation?

It typically includes insulated copper pipes used to connect indoor and outdoor units.

8.What system capacity is this size suitable for?

Usually used for 9,000–12,000 BTU systems.

9.Can this line set handle modern refrigerants?

Yes, it supports high-pressure refrigerants like R410A and R32.

10.Is it suitable for outdoor installation?

Yes, thanks to UV-resistant insulation.

11.Do you support OEM customization?

Yes, including logo printing and packaging customization.