The 35 ft 1/4" x 1/2" Mini Split Air Conditioner Kit is a complete HVAC installation solution designed for ductless mini split systems and heat pumps. The kit includes pre-insulated copper tubing and essential installation accessories, helping HVAC technicians complete installations quickly and efficiently.
This air conditioner installation kit is manufactured using 99.9% pure copper tubing that meets ASTM B280 and C12200 standards, ensuring excellent durability, high pressure resistance, and long service life in refrigeration applications.
The Mini Split Installation Kit is twin already. So buy it now.
Complete Mini Split Installation Kit with Essential HVAC Accessories
This HVAC installation kit includes everything required for professional air conditioner installation.
Standard components include:
These components allow installers to connect the indoor and outdoor units efficiently while maintaining safe refrigerant flow.
High-Quality 99.9% Pure Copper Refrigeration Tubing
The copper pipes used in this mini split installation kit are manufactured from 99.9% pure copper, ensuring superior heat transfer and corrosion resistance.
Advantages of copper HVAC tubing include:
Excellent refrigerant conductivity
High pressure tolerance for modern refrigerants
Long operational lifespan
Easy flaring and brazing during installation
Copper tubing remains the preferred material for HVAC refrigeration line sets worldwide.
Pre-Flared Copper Pipe Ends for Faster Installation
Both copper pipes in this mini split kit are pre-flared and equipped with flare nuts, allowing technicians to connect the refrigerant lines directly to HVAC units.
Benefits include:
Reduced installation time
Improved connection reliability
Lower risk of refrigerant leakage
Simplified installation for HVAC contractors
Pre-flared copper line sets are widely used in professional mini split installations.
High-Performance Pipe Insulation for Energy Efficiency
The copper tubing is protected by high-quality insulation that prevents energy loss and protects the refrigerant line from environmental damage.
Available insulation materials include:
White PE insulation
Black rubber insulation
Insulation thickness options include 8mm, 9mm, 10mm, 13mm, 19mm, and 25.4mm, providing flexible solutions for different HVAC applications.
Three-Layer Insulation Structure for Maximum Protection
The insulated copper pipe uses a three-layer insulation design that improves durability and thermal performance.
Outer Layer
UV-resistant polyethylene film that protects against sunlight, abrasion, and aging.
Middle Layer
High-density cross-linked PE foam providing shock absorption and thermal insulation.
Inner Layer
Closed-cell insulation structure that prevents moisture penetration and maintains stable temperature performance.
This design improves system efficiency and extends the life of the refrigeration line.
Features of pipe insulation tubing:
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Wide Applications for Mini Split and HVAC Systems
The 1/4" + 1/2" mini split line set is commonly used in:
Ductless mini split air conditioners
Heat pump systems
VRF / VRV air conditioning systems
Residential HVAC installations
Light commercial cooling systems
This size is typically suitable for 1.5 ton to 2 ton mini split air conditioners, often used for 12,000 BTU to 18,000 BTU systems.
Certified HVAC Insulation Materials for Safety and Reliability
The insulation used in this HVAC line set has been tested according to international standards.
Certifications include:
ASTM E84 fire performance test
UL 94 flame resistance standard
ASTM D1056 insulation material standard
ASTM G21 mold resistance test
These certifications ensure the copper pipe insulation meets global HVAC safety requirements.
Flexible Copper Coil for Convenient Installation
The 35 ft copper line set provides enough length for most residential mini split installations.
Advantages of flexible copper tubing include:
Easy routing through walls or ceilings
Reduced need for additional connectors
Lower installation time and labor costs
Improved reliability with fewer joints
This makes the kit ideal for both professional HVAC contractors and installers.
Mini Split Line Set Size Guide for HVAC Systems
Different HVAC systems require different copper pipe sizes.
Common line set sizes include:
| Line Set Size | Typical System Capacity |
| 1/4 + 3/8 | 9,000 – 12,000 BTU |
| 1/4 + 1/2 | 12,000 – 18,000 BTU |
| 1/4 + 5/8 | 24,000 – 30,000 BTU |
| 3/8 + 5/8 | 36,000 – 48,000 BTU |
| 3/8 + 3/4 | 54,000 – 72,000 BTU |
Selecting the correct line set size ensures optimal refrigerant flow and system efficiency.
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Mini Split Air Conditioner Kit
Size | Length | Insulation White PE | 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 installation kit used for 0.75TON - 1.0TON mini split air conditioner.
1/4 + 1/2 Minisplit 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 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 DABUND Mini Split Installation Kits
DABUND is a professional HVAC manufacturer with extensive experience in producing copper line sets and air conditioning installation kits.
Key advantages include:
Over 14 years of HVAC manufacturing experience
Large-scale factory production capacity
Strict quality control inspection
Competitive factory pricing
Global export experience
The company produces insulated copper pipes, mini split line sets, aluminum tubing, and HVAC accessories for international markets.
DABUND FACTORY
We produce Insulated Copper Pipe, Mini Split Line Set and Aluminum Pipe and HVAC Parts
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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
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Exhibition
We join the exhibitions all over the word, just to facilitate customers to experience our mini split line set face to face.
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FAQ
1.What is included in a 35 ft mini split air conditioner installation kit?
A 35 ft mini split air conditioner installation kit typically includes the essential components needed to connect the indoor and outdoor units of a ductless HVAC system. Most kits contain pre-insulated copper line sets, communication wires, a drain hose, wall sleeve, wall cover, and flare nuts. These components simplify installation and help HVAC technicians complete the setup quickly and safely.
2.What size mini split system uses a 1/4" x 1/2" line set?
A 1/4" liquid line and 1/2" suction line is commonly used for 12,000 BTU to 18,000 BTU mini split air conditioners. However, the exact pipe size required depends on the air conditioner manufacturer and system capacity. Always check the equipment specifications or installation manual before choosing a mini split line set.
3.Why are copper pipes used in mini split installation kits?
Copper pipes are the industry standard for HVAC refrigerant line sets because they provide excellent thermal conductivity and durability. Copper tubing can withstand high refrigerant pressure, resists corrosion, and allows smooth refrigerant flow between the indoor and outdoor units. In addition, copper pipes are easy to flare and connect, making installation faster and more reliable.
4.How long can a mini split line set last?
A high-quality mini split copper line set can last 20 years or more when installed correctly and protected with proper insulation. Copper tubing is extremely durable and resistant to corrosion. Using high-density insulation also prevents condensation, UV damage, and temperature loss, which helps extend the life of the HVAC system.
5.Can the 35 ft copper line set be shortened during installation?
Yes. The 35 ft insulated copper tubing included in the installation kit can be cut to the required length depending on the distance between the indoor and outdoor units. HVAC technicians often trim the pipe to reduce excess length and minimize the number of joints, which helps prevent refrigerant leaks and improves system efficiency.
6.What type of insulation is used on mini split copper pipes?
Mini split line sets usually use closed-cell polyethylene (PE) foam or rubber insulation. This type of insulation provides excellent thermal protection and helps prevent condensation from forming on the pipe surface. High-quality insulation also offers UV resistance, flame resistance, and moisture protection, making it suitable for both indoor and outdoor HVAC installations.
7.Is the copper pipe in the installation kit pre-flared?
Yes. Most mini split installation kits come with pre-flared copper pipe ends and flare nuts. Pre-flared pipes allow HVAC technicians to connect the refrigerant lines directly to the air conditioning unit without additional flaring tools. This feature significantly reduces installation time and improves connection reliability.
8.Can mini split installation kits be used for heat pump systems?
Yes. Mini split installation kits are compatible with both ductless air conditioners and heat pump systems. The insulated copper line set allows refrigerant to circulate between indoor and outdoor units, enabling both cooling and heating functions in modern HVAC systems.
9.Are mini split installation kits suitable for residential and commercial HVAC systems?
Mini split installation kits are widely used in residential homes, offices, apartments, retail stores, and small commercial spaces. Their flexible copper tubing and compact design make them ideal for installations where traditional ducted systems are not practical.
10.Why choose a professional HVAC line set manufacturer?
Working with a professional HVAC line set manufacturer ensures consistent product quality, high-purity copper materials, and reliable insulation performance. Experienced manufacturers also provide OEM customization, strict quality control, and international certification, making their products suitable for HVAC distributors, contractors, and global installation projects.
