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DBJ-003
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DABUND
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Copper
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1M - 10M
Material
Color
Keywords
Application
35 ft 1/4" x 5/8" AC Installation Kit for Mini Split HVAC Systems
The DABUND 35 ft 1/4" x 5/8" AC installation kit is a complete mini split HVAC line set solution for professional air conditioner installation. It includes pre-insulated copper tubing, communication wire cable, drain hose, wall sleeve, decorative wall cover, and essential installation accessories for connecting indoor and outdoor ductless HVAC units.
This 35 ft pre-insulated copper line set is suitable for longer routing distances in residential and light commercial mini split systems. The 1/4" liquid line and 5/8" suction line are commonly used for medium-capacity split air conditioners, heat pumps, and ductless mini split systems. Final line set selection should always follow the air conditioner manufacturer’s installation manual.
Complete HVAC Installation Kit for Mini Split Air Conditioners
This all-in-one mini split installation kit helps installers reduce separate sourcing work and improve installation efficiency. It combines the copper line set, insulation, connection accessories, drainage parts, and wall protection components into one ready-to-use HVAC installation package.
35 ft insulated copper line set: 1/4" liquid line + 5/8" suction line
Communication wire cable for indoor and outdoor unit connection
Condensate drain hose for water discharge
Wall sleeve pipe for clean wall penetration
Decorative wall cover for professional installation appearance
Pre-flared copper pipe ends with nuts
Essential accessories for mini split HVAC installation
99.9% Pure Copper Tubing for Reliable HVAC Performance
The copper tubing is manufactured from 99.9% pure copper and designed for HVAC refrigerant line applications. High-purity copper helps support stable refrigerant transmission, strong thermal conductivity, and long-term performance in mini split air conditioner and heat pump systems.
Excellent thermal conductivity for refrigerant flow
High-pressure resistance for HVAC applications
Good corrosion resistance for long service life
Stable refrigerant transmission between indoor and outdoor units
Designed for professional mini split and split AC installation
ASTM B280 and C12200 Seamless Copper Tubing
The copper line set can be produced with ASTM B280 and C12200 seamless copper tubing specifications, helping meet professional HVAC and refrigeration installation requirements.
1/4" x 5/8" Copper Line Set for Medium-Capacity AC Systems
The 1/4" + 5/8" copper line set is commonly selected for medium-capacity ductless air conditioning systems where a larger suction line is required. It is often used for 2.0 ton to 2.5 ton systems, including 24000 BTU and 30000 BTU mini split air conditioners. Some 18000 BTU and 24000 BTU systems may also use this size depending on brand and model requirements.
Mini split air conditioner systems
Ductless split AC systems
Heat pump systems
Residential HVAC installation projects
Light commercial cooling systems
Pre-Flared Copper Pipe Ends for Faster Installation
Both ends of the copper tubing are factory pre-flared and equipped with nuts. This design reduces on-site preparation work, helps installers save time, and improves connection consistency during HVAC installation.
Pre-flared pipe ends
Equipped with brass or copper nuts
Ready for direct connection to compatible units
Reduced need for additional flaring tools on site
Proper torque control, evacuation, and pressure testing are still recommended to help prevent refrigerant leakage and ensure safe system operation.
99.9% Pure Copper
Black Rubber Insulated Pipe
Pre-Flared Connection
Black Rubber Pipe Insulation Features
The black rubber insulation is designed to provide thermal protection, moisture resistance, and installation flexibility. It works as both an insulation layer and a moisture-proof layer, helping reduce condensation and maintain refrigerant temperature stability.
Material: black rubber foam insulation
Temperature range: -40°C to 120°C
Better moisture condensation protection
Combined insulation and moisture-proof structure
No additional water vapor permeation protective layer required in many applications
Flexible and durable for indoor and outdoor HVAC routing
PE and Rubber Insulation Options for HVAC Copper Line Sets
DABUND can supply insulated copper tubing with white PE insulation or black rubber insulation. Both options help protect the copper pipe, reduce thermal loss, and improve HVAC system efficiency.
White PE Insulation
Lightweight and economical
UV-resistant outer surface
Good moisture resistance
Suitable for common residential and commercial HVAC installation
Black Rubber Insulation
Superior thermal insulation performance
Better flexibility for installation routing
Enhanced outdoor durability
Strong moisture and condensation resistance
Advanced Three-Layer Insulation Structure
The insulation system can be produced with a durable multi-layer structure to protect the copper tubing in demanding HVAC installation environments.
Outer Protective Layer
UV-resistant embossed PE film helps improve anti-aging, wear resistance, and outdoor protection.
Middle Insulation Layer
High-density IXPE foam provides heat preservation, sound absorption, and moisture resistance.
Inner Closed-Cell Layer
The closed-cell airtight structure helps maintain stable thermal performance from -40°C to 120°C.
Fire-Resistant and SGS Tested HVAC Copper Pipe
The insulation material can meet international testing requirements according to product material and specification. Flame-retardant insulation helps improve installation safety for residential and commercial HVAC systems.
ASTM E84 fire performance
UL94 flame resistance
ASTM D1056 material performance
ASTM G21 fungal resistance
SGS testing support according to product requirements
Compatible with Modern HVAC Refrigerants
This insulated copper line set is designed for HVAC refrigerant piping applications and can support modern refrigerant systems when the pipe specification, wall thickness, installation process, and system requirements match.
R410A air conditioning systems
R32 mini split systems
R22 replacement and service applications where permitted
Heat pump and ductless HVAC systems
Flexible Copper Tubing for Easy HVAC Routing
The soft annealed copper tubing provides better flexibility during installation. This helps installers route the 35 ft line set through walls, ceilings, and outdoor paths more efficiently, especially when installation space is limited.
Easier bending during installation
Reduced installation difficulty
Better routing flexibility for longer line paths
Faster project completion for contractors
Technical Specifications
| Feature | Details |
|---|---|
| Product Name | 35 ft 1/4" x 5/8" AC Installation Kit |
| Product Type | Pre-insulated copper line set with installation accessories |
| Length | 35 ft / approximately 10.7 m |
| Liquid Line | 1/4 inch / 6.35 mm |
| Suction Line | 5/8 inch / 15.88 mm |
| Copper Material | 99.9% pure copper |
| Insulation Options | White PE insulation / black rubber insulation |
| Temperature Range | -40°C to 120°C |
| Connection Type | Pre-flared ends with nuts |
| Common Application | Mini split AC, heat pump, ductless HVAC system |
| Common Capacity Range | Typically 2.0–2.5 ton / 24000–30000 BTU, depending on system requirements |
| Copper Standards | ASTM B280, C12200 |
| Insulation Standards | ASTM E84, UL94, ASTM D1056, ASTM G21 |
AC Installation Kit Size Options
| 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 |
Mini Split Line Set Size and AC Capacity Reference
| Line Set Size | Common Ton / HP Range | Common BTU Range | Typical Application |
|---|---|---|---|
| 1/4 + 3/8 | 0.75 ton – 1.0 ton / 0.75P – 1P | 9000–12000 BTU / 9K–12K | Small mini split air conditioner |
| 1/4 + 1/2 | 1.5 ton – 2.0 ton / 1.5P – 2P | 12000–18000 BTU / 12K–18K | Medium mini split air conditioner |
| 1/4 + 5/8 | 2.0 ton – 2.5 ton / 2P – 2.5P | 24000–30000 BTU / 24K–30K | Split AC and heat pump system |
| 3/8 + 5/8 | 3.0 ton – 4.0 ton / 3P – 4P | 36000–48000 BTU / 36K–48K | Ductless commercial air conditioner |
| 3/8 + 3/4 | 4.5 ton – 6.0 ton / 4.5P – 6P | 54000–72000 BTU / 54K–72K | Large split air conditioner installation |
| 3/8 + 7/8 | 6.0 ton – 8.0 ton / 6P – 8P | 72000–96000 BTU / 72K–96K | High-capacity ductless HVAC system |
OEM and ODM HVAC Copper Line Set Manufacturer
DABUND provides OEM and ODM customization services for HVAC distributors, importers, wholesalers, contractors, and mini split system brands. Custom specifications can be supplied according to market demand, installation habits, and brand packaging requirements.
Custom copper tubing lengths, including 25 ft, 35 ft, 50 ft, 3m, 4m, 5m, 7m, and 10m
Custom pipe sizes for different BTU and tonnage systems
Insulation thickness customization
White PE or black rubber insulation options
Private label packaging
Logo printing on insulation
Bulk order manufacturing for global HVAC supply chains
Large Production Capacity and Global Export Support
DABUND is an HVAC copper line set manufacturer serving global customers with factory-direct supply, stable production, and export support.
14+ years of HVAC manufacturing experience
2 production factories
Monthly production capacity exceeding 1,000,000 pcs
Fast sample lead times
Reliable worldwide shipping support
Factory-direct pricing for distributors and contractors
Why Choose This 35 ft AC Installation Kit?
Complete HVAC installation solution for mini split systems
35 ft length for longer installation routes
High-purity seamless copper tubing
UV-resistant insulated copper line set
Pre-flared copper ends for easier installation
Fire-resistant and SGS tested insulation options
Compatible with modern HVAC refrigerant systems when specifications match
OEM customization for brands, wholesalers, and contractors
DABUND Factory
We produce insulated copper pipe, mini split line set, aluminum pipe, and HVAC parts for global HVAC customers.
SGS Certificate
DABUND mini split line set insulation can be made of polypropylene or black rubber with UV resistance and can meet ASTM E84, UL94, ASTM D1056, and ASTM G21 standards according to product specification.
Exhibition
DABUND joins HVAC exhibitions worldwide to help customers evaluate mini split line sets, AC installation kits, and HVAC parts face to face.
FAQ
What is included in a 35 ft AC installation kit?
A standard 35 ft AC installation kit typically includes insulated copper tubing, communication wire cable, drain hose, wall sleeve, decorative wall cover, pre-flared pipe ends with nuts, and installation accessories required for mini split HVAC installation.
What size air conditioner uses a 1/4" x 5/8" copper line set?
A 1/4" x 5/8" copper line set is commonly used for 2.0 ton to 2.5 ton mini split air conditioners, including 24000 BTU and 30000 BTU systems. Some 18000 BTU and 24000 BTU units may also use this size depending on manufacturer requirements.
Why is insulated copper tubing important for HVAC systems?
Insulated copper tubing helps reduce thermal energy loss, prevent condensation, maintain refrigerant temperature stability, protect copper pipes from environmental damage, and improve long-term HVAC system performance.
Are the copper pipe ends pre-flared?
Yes. Both ends are pre-flared and equipped with nuts, allowing faster installation and reducing the need for additional flaring tools. Proper installation, evacuation, and pressure testing are still required.
What insulation materials are available for HVAC copper line sets?
Common insulation materials include white PE insulation and black rubber insulation. Both provide thermal insulation, moisture resistance, UV protection, and condensation control for HVAC line set applications.
Is this insulated copper tubing compatible with R410A refrigerant?
Yes, the copper tubing can be used with modern refrigerants such as R410A, R32, and R22 when the pipe specification, wall thickness, pressure rating, and installation requirements match the HVAC system.
What certifications should HVAC copper tubing have?
Reliable HVAC copper tubing and insulation should comply with relevant standards such as ASTM B280, C12200, UL94, ASTM E84, ASTM D1056, ASTM G21, and SGS testing requirements according to the final product specification.
Can I customize the 35 ft AC installation kit?
Yes. DABUND supports OEM and ODM customization, including custom length, insulation thickness, copper pipe size, insulation material, logo printing, private label branding, and custom packaging for HVAC wholesalers and distributors.
What are the advantages of seamless copper tubing in HVAC systems?
Seamless copper tubing offers better pressure resistance, reduced leakage risk, improved durability, longer service life, and stable refrigerant transmission, making it suitable for professional mini split and split AC installations.
Why choose DABUND as an HVAC copper line set supplier?
DABUND offers factory-direct pricing, large-scale manufacturing capacity, strict quality control, OEM and ODM customization, fast sample support, and global export experience for HVAC distributors, contractors, wholesalers, and importers.
