50 ft 1/4″ x 3/8″ AC Installation Kit – Complete HVAC Line Set Solution

Premium 50 ft AC installation kit with pre-insulated 1/4″ x 3/8″ copper refrigerant lines and essential HVAC accessories — ideal for mini split, ductless AC, and heat pump installations in residential and commercial settings.

The AC Installation Kit is twin already. So buy it now.

Product Overview – All-in-One HVAC Line Set Kit

The 50 ft 1/4″ x 3/8″ AC installation kit includes pre-insulated copper tubing and installation accessories designed to simplify and speed up the installation process of mini split and ductless air conditioning systems. With factory insulation and included hardware, this kit delivers a complete solution from start to finish.

Factory-Insulated Copper Line Set for Thermal Efficiency

• Includes 1/4″ liquid line and 3/8″ suction line with pre-installed insulation

• Factory insulation helps reduce heat loss and prevent condensation

• Saves time vs. field-wrapped insulation — quick and professional installation

Includes Essential Installation Accessories

• Communication wire cable for indoor to outdoor unit connection

• Condensate drain hose for moisture management

• Wall pipe and cover for neat, protected wall entry

• Flare nuts and fittings for secure refrigerant connections

Key Features & Benefits of This AC Installation Kit

Easy to Install and Save Labor Costs

Pre-insulated tubing and included hardware reduce installation time while improving consistency and reliability — ideal for HVAC technicians and experienced DIY installers.

Improved Energy Efficiency and System Performance

Factory insulation minimizes thermal exchange along the refrigerant lines, helping maintain optimal temperature and improve overall HVAC efficiency.

Reduces Risk of Condensation and Moisture Issues

The insulation helps prevent surface condensation, protecting walls, ceilings, and surrounding areas from water damage and humidity buildup.

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

Compatibility & HVAC Applications

Designed for Mini Split and Ductless AC Systems

This kit is compatible with most mini split, ductless AC, and heat pump applications — perfect for residential homes, apartments, offices, workshops, and other light commercial installations.

Works with Modern Refrigerants

Suitable for use with common refrigerants such as R410A, R32, and other modern HVAC refrigerants, meeting performance requirements for today’s systems.

Technical Specifications

Installation Tips for Best Results

Plan Your Line Routing Before Installation

Measure total line run length and visualize routing path to avoid unnecessary bends, kinks, or sharp turns that could hinder refrigerant flow or damage insulation.

Use Included Wall Pipe for Protection

The provided wall pipe and cover help protect copper lines from abrasion and weather exposure where they pass through building walls.

Secure Lines to Avoid Sagging

Use appropriate brackets, clips or straps to support copper lines during long runs to prevent vibration, sagging, or insulation stress.

AC Installation Kit

1/4 + 3/8 AC 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 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 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 AC Installation Kit 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 AC Installation Kit 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 line set 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 AC Installation Kit 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 Line set 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 50 ft AC Installation Kit?

Complete, Ready-to-Install Solution

This kit includes everything needed for best-practice installation — factory-insulated lines and all essential accessories — saving time and reducing installation errors.

Professional-Grade Materials for Long-Term Reliability

With 99.9% pure copper tubing and factory insulation designed for durability and thermal performance, this kit delivers reliable operation and long service life.

Ideal for Residential and Light Commercial HVAC Projects

Whether you’re a contractor or DIY enthusiast, this kit provides a flexible, high-quality solution for mini split and ductless installation projects of varying scale.

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″ x 3/8″” mean in this kit?

It refers to the outer diameters of the dual refrigerant tubes: 1/4″ for the liquid line and 3/8″ for the suction line, a common configuration used in mini split and ductless air conditioners.

8.Is additional insulation needed on site?

No — this kit includes factory-applied insulation on the copper line set, eliminating the need for additional insulation wraps in most installations.

9.Can this kit be used for outdoor lines?

Yes — the insulation is UV-resistant and weather-ready, making it suitable for both indoor and outdoor line runs.

10.Is this installation kit compatible with all AC brands?

This line set and accessories are compatible with most standard mini split and ductless AC brands, but always verify specific installation requirements for your system.