Looking for a complete, ready-to-install HVAC solution? This 10 ft 1/4" x 3/8" mini split air conditioner installation kit includes everything you need for a fast, professional installation—perfect for residential ductless systems.
Instead of sourcing parts separately, this all-in-one kit simplifies your project and ensures compatibility.
Product Overview – Complete Mini Split Installation Kit (10 ft)
This HVAC installation kit combines copper tubing with essential accessories, providing a full connection solution between indoor and outdoor units.
What’s Included in the Kit?
1/4" + 3/8" insulated copper line set (10 ft / 3m)
Communication wire cable
Drain hose (approx. 3m)
Wall sleeve & decorative cover
Pre-flared ends with nuts
Everything is pre-matched and ready to install, saving time and reducing installation errors.
High-Quality Copper Line Set – Built for Performance
99.9% Pure Copper Meets ASTM Standards
The copper tubing is made from high-purity C12200 copper and complies with ASTM B280 standards, ensuring:
This guarantees reliable operation for HVAC systems.
Pre-Flared Ends for Easy Connection
Both ends of the copper pipes are pre-flared with nuts, allowing:
This is especially useful for installers and DIY projects.
Advanced Insulation for Energy Efficiency & Protection
UV-Resistant & Weatherproof Insulation
The insulation layer is designed for outdoor durability:
Multiple Insulation Options Available
Choose insulation based on your project:
This flexibility allows customization for different climates and installation environments.
Closed-Cell Structure for Moisture Protection
The insulation uses a closed-cell design that:
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.

Key Benefits of 10 ft Mini Split Installation Kit
All-in-One Solution – Save Time & Cost
No need to purchase components separately. This kit includes everything required for installation, reducing procurement time and ensuring compatibility.
Ideal for Short Distance Installations
The 10 ft length is perfect for:
Back-to-back installations
Indoor-outdoor wall mounting
Compact residential setups
Optimized for Small HVAC Systems
The 1/4" + 3/8" configuration is commonly used for:
Faster Installation & Reduced Labor Cost
Pre-insulated tubing + included accessories = faster setup and fewer installation steps.
Durable & Long-Lasting Performance
With corrosion-resistant copper and high-quality insulation, this kit can last 15–20 years or more with proper installation.
HVAC Applications – Wide Compatibility
This installation kit is suitable for:
Ductless mini split systems
Heat pump systems
Residential HVAC installations
Small commercial cooling projects
Technical Specifications
| Feature | Details |
|---|
| Length | 10 ft (3 m) |
| Liquid Line | 1/4" |
| Suction Line | 3/8" |
| Material | 99.9% pure copper |
| Insulation | PE / Black rubber (optional) |
| Temperature Range | -40℃ to 120℃ |
| Accessories | Wire, drain hose, wall cover |
| Standards | ASTM B280, C12200, UL94, ASTM E84 |
OEM Customization & Manufacturing Capabilities
Looking to build your own HVAC brand?
We offer:
Custom branding (logo printing)
Custom insulation color & thickness
Flexible kit configurations
OEM & ODM services
With in-house production and large capacity, we support bulk orders and fast delivery.

Mini Split Air Conditioner Kit
Size | Length | Insulation Black Rubber | Flame Resistant |
1/4+3/8 | 3m/4m/5m/7m/10m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
1/4+1/2 | 3m/4m/5m/7m/10m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
1/4+5/8 | 3m/4m/5m/7m/10m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
3/8+5/8 | 3m/4m/5m/7m/10m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
3/8+3/4 | 3m/4m/5m/7m/10m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
1/2+3/4 | 3m/4m/5m/7m/10m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
3/8+7/8 | 3m/4m/5m/7m/10m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
1/4 + 3/8 Mini split air conditioner kit 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 Mini split air conditioner 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 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.
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 air conditioner 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.
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 air conditioner kit used for 54K and 72K split air conditioner installation.
3/8 + 7/8 Mini split air conditioner Kit apply for 72K - 96K ductless mini split air conditioner.
Why Choose DABUND Mini Split Installation Kit?
15+ years HVAC manufacturing experience
Full in-house production (copper + insulation + kit assembly)
Large production capacity (1,000,000 pcs/month)
Strict international quality standards
Global export support
DABUND provides a complete HVAC installation solution for distributors and contractors.
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.What is included in a 10 ft mini split installation kit?
A typical kit includes an insulated copper line set, communication wire, drain hose, wall sleeve, and decorative cover—everything needed for a complete installation.
2.What size HVAC system is this kit suitable for?
The 1/4" + 3/8" configuration is typically used for 9000–12000 BTU mini split systems, making it ideal for residential applications.
3.Why choose a complete installation kit instead of separate components?
A complete kit ensures compatibility between components, saves sourcing time, reduces installation errors, and lowers overall costs.
4.Are the copper pipes pre-flared?
Yes, the copper pipes come pre-flared with nuts, allowing quick and easy installation without brazing.
5.What type of insulation is used in this kit?
The kit offers PE or black rubber insulation with a closed-cell structure, providing thermal insulation, UV resistance, and moisture protection.
6.Can this installation kit be used outdoors?
Yes, the insulation is UV-resistant and weatherproof, making it suitable for outdoor installations.
7.Can I customize this HVAC installation kit?
Yes, OEM and ODM services are available, including custom branding, insulation thickness, and accessory combinations.
8.How long does a mini split installation kit last?
With proper installation, the components—especially the copper tubing—can last over 15–20 years.
9.Is this kit suitable for DIY installation?
Yes, thanks to pre-flared pipes and included accessories, it is suitable for both professional installers and experienced DIY users.