15 ft 1/4″ × 3/8″ Mini Split Air Conditioner Kit – Complete HVAC Installation Line Set

HVAC Parts are produced by Dabund Pipe since 2008 years.

Get free sample on qualified Mini split air conditioner kit, including 15 ft 1/4" x 3/8" with 1/2" white PE, wire cable, wall pipe with cover and drain hose, in the Heating, Venting & Cooling System.

The Mini Split Air Conditioner Kit is twin already. So buy it now.

Product Overview – All-in-One Mini Split AC Installation Kit

The 15 ft 1/4″ × 3/8″ mini split air conditioner kit includes a pre-insulated copper refrigerant line set plus all necessary accessories for a complete installation. This kit streamlines setup and reduces field preparation time by including factory-flared lines and multiple installation components.

Pre-Insulated Copper Line Set for Thermal Efficiency

• Factory-applied insulation on both 1/4″ liquid line and 3/8″ suction line

• Reduces heat gain/loss and minimizes condensation during operation

• Ideal for shorter indoor/outdoor unit distances, up to ~15 ft

Complete Installation Accessories Included

This kit includes:

• Insulated copper refrigerant lines with flared ends and nuts

• Communication wire cable for indoor/outdoor connection

• Drain hose (approx. 3 m) to manage condensate discharge

• Wall pipe and cover for protected entry through walls

• Other necessary connectors and fittings pre-bundled for quick install

Key Features & Benefits

Simplifies HVAC Installation

Combining refrigerant lines and accessories in one kit saves time and effort during installation, making it easier for technicians and advanced DIY users to complete a professional setup.

Optimized for Common Mini Split Sizes

The 1/4″ × 3/8″ line size is commonly used for mini split systems and is suitable for units with moderate cooling capacities. This size pairing works well for systems around 0.75–1.0 TON / ~9,000–12,000 BTU configurations.

Durable Insulation Options

You can choose either White PE or Black Rubber insulation, available in various thicknesses to match local climate and building requirements. The insulation offers superior resistance to UV, wear, and environmental stress.

99.9% Pure Copper

White PE Insulated Pipe

Copper Nut

Features of pipe insulation tubing:

Machines for the production of thermal insulation pipes

warehouse for insulation pipes

Inner Layer Insulated Pipe

HVAC Compatibility & Applications

Ideal for Residential & Light Commercial Installations

Perfect for connecting indoor evaporator coils to outdoor condensers in single-zone systems, including:

• Mini split air conditioners

• Ductless heat pumps

• Residential cooling & heating systems

Works With Standard HVAC Refrigerants

Compatible with widely used refrigerants such as R410A, R32, and other industry-standard refrigerants when installed per manufacturer specifications. (Typical for mini split line sets in US installations.)

Technical Specifications

Installation Tips for a Smooth Setup

Measure & Plan Before Installing

Confirm the total distance from indoor to outdoor units to ensure the 15 ft lineset comfortably bridges the run without tension or sharp bends.

Protect Insulation at Penetration Points

Use the included wall pipe with cover to protect the insulation and copper tubing where lines pass through walls, ensuring longevity and reduced condensation contact with building structures.

Secure Lines With Proper Supports

Use straps, clamps, or line clips to support the line set along its run, reducing vibration, wear, and future maintenance issues.

Mini Split Air Conditioner Kit

1/4 + 3/8 Mini split installation kit 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 Mini split air conditioner 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.

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

1/4 + 5/8 Mini Split Installation Kit 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 air conditioner kit used for 54000 BTU and 72000 split air conditioner installation.

3/8 + 7/8 Mini split installation kit 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.

Mini Split Installation Kit 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 air conditioner kit used for 54K and 72K split air conditioner installation.

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

Why Choose This Mini Split Installation Kit?

Complete, Ready-to-Install Package

This kit includes all essential components — pre-insulated copper lines, communication wire, drain hose, and wall accessories — simplifying the installation process.

Suitable for Technicians & DIY Installers

Whether you’re an experienced HVAC installer or a knowledgeable DIYer, this kit delivers reliability, ease of installation, and consistent performance.

Trusted Quality & Durable Materials

Made with 99.9% pure copper and high-quality insulation materials that meet industry standards, this kit offers long-lasting durability for mini split AC systems.

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 does “1/4″ × 3/8″” mean in this installation kit?

It refers to the outer diameters of the refrigerant lines: 1/4″ liquid line and 3/8″ suction line, a standard configuration for many small to medium mini split HVAC systems.

8.Is this kit suitable for outdoor use?

Yes — the copper lines are factory-insulated and weather-resistant, appropriate for connecting indoor and outdoor HVAC components.

9.Do I need extra insulation at installation?

No — this kit comes with factory-applied insulation that eliminates the need for additional field wrapping in most standard mini split installations.

10.Is this kit compatible with R410A refrigerant?

Yes — this installation kit is compatible with common refrigerants such as R410A used by most modern mini split units.