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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
25 ft 1/4" x 1/2" Split System Air Conditioner Installation Kit
The DABUND 25 ft 1/4" x 1/2" split system air conditioner installation kit is a complete HVAC line set solution for ductless mini split air conditioners, heat pumps, and split AC systems. It combines pre-insulated copper tubing, communication cable, drain hose, wall sleeve, and installation accessories to help contractors, wholesalers, and HVAC distributors complete installation faster and with more reliable performance.
This 25 ft mini split installation kit is commonly used for 12000 BTU to 18000 BTU systems, including 1.5 ton to 2.0 ton residential and light commercial air conditioning units.
Product Overview – Complete Mini Split Line Set Kit
This complete split AC installation kit is designed for installers who need a ready-to-use HVAC line set with matching accessories. The 1/4" liquid line and 1/2" suction line are made from high-purity copper and covered with protective insulation to reduce thermal loss, prevent condensation, and support stable refrigerant flow between indoor and outdoor units.
Pipe size: 1/4" liquid line + 1/2" suction line
Length: 25 ft / 7.6 m
Material: 99.9% pure copper
Structure: Twin insulated copper pipes
Application: Mini split air conditioners, split AC systems, and heat pumps
Suitable capacity: 12000–18000 BTU / 1.5–2.0 ton systems
What Is Included in the HVAC Installation Kit?
DABUND supplies the installation kit as an all-in-one package, helping reduce additional sourcing work for HVAC contractors, mini split brands, importers, and distributors.
Pre-insulated 1/4" + 1/2" copper line set
Communication wire cable
Condensate drain hose, approximately 3 m
Wall pipe sleeve and protective cover
Pre-flared copper pipe ends with copper nuts
Optional custom packaging for OEM and wholesale orders
Pre-Insulated Copper Line Set
The factory-insulated copper line set eliminates the need for manual insulation wrapping during installation. This helps improve consistency, reduce labor time, and lower the risk of exposed copper, condensation, or heat loss.
Pre-Flared Ends with Copper Nuts
Both ends of the copper tubing are pre-flared and fitted with nuts, allowing fast connection to indoor and outdoor units. This design is suitable for professional HVAC installation and helps reduce preparation work on site.
Premium Copper Tubing for HVAC Refrigerant Lines
The copper tubing is manufactured from 99.9% pure copper and designed for HVAC and refrigeration applications. It provides excellent thermal conductivity, strong corrosion resistance, and long-term durability for mini split air conditioner installation.
High-purity copper for stable refrigerant transmission
Designed for split AC, ductless mini split, and heat pump systems
Compatible with modern HVAC refrigerant applications when installed correctly
Pre-flared ends help improve installation efficiency
99.9% Pure Copper
White PE Insulated Pipe
Copper Nut
Advanced Insulation System for Energy Efficiency
The insulated copper tubing is available with white PE insulation or black rubber insulation. The insulation helps reduce energy loss, protect the copper pipe from outdoor exposure, and prevent condensation during HVAC system operation.
UV-Resistant and Weatherproof Insulation
UV-resistant surface for outdoor installations
Anti-aging insulation for long service life
Flame-retardant insulation options
Moisture-resistant structure to reduce condensation risk
Triple-Layer Insulation Structure
Outer layer: UV-resistant PE film
Middle layer: IXPE foam insulation
Inner layer: Closed-cell airtight structure
Thermal Insulation Pipe Production
Insulated Pipe Warehouse
Inner Layer Insulated Pipe
Key Benefits of This 25 ft Mini Split Installation Kit
Save Installation Time
The pre-insulated copper pipes, pre-flared ends, cable, drain hose, and wall sleeve help reduce preparation work. Installers can complete mini split AC installation more efficiently with fewer separately purchased components.
Improve HVAC System Efficiency
Quality insulation helps minimize heat transfer and supports stable refrigerant performance. This is important for ductless mini split systems, heat pumps, and split air conditioner installations.
Reduce Leak Risks with Continuous Line Set
A 25 ft continuous copper line set reduces unnecessary joints and connection points. Fewer connections can help improve installation reliability when the line set is properly selected, flared, torqued, and pressure-tested.
Suitable for OEM Brands, Wholesalers, and Contractors
DABUND supports custom length, insulation color, logo printing, and packaging for HVAC brands, importers, distributors, contractors, and mini split system suppliers.
HVAC Applications for 1/4" x 1/2" Copper Line Set
The 1/4" + 1/2" mini split line set is widely used for medium-capacity ductless air conditioning systems. It is commonly selected for 12K and 18K BTU mini split air conditioners.
12000 BTU and 18000 BTU mini split air conditioners
1.5 ton and 2.0 ton split AC systems
Residential HVAC installation projects
Small commercial air conditioning systems
Heat pump and ductless mini split installations
Technical Specifications
| Feature | Details |
|---|---|
| Product Name | 25 ft 1/4" x 1/2" Split System Air Conditioner Installation Kit |
| Length | 25 ft / 7.6 m |
| Liquid Line | 1/4" |
| Suction Line | 1/2" |
| Copper Material | 99.9% pure copper |
| Insulation | White PE / black rubber insulation |
| Temperature Range | -40℃ to 120℃ |
| Applicable System | Mini split AC, ductless split air conditioner, heat pump system |
| Common Capacity | 12000–18000 BTU / 1.5–2.0 ton |
| Standards | ASTM B280, C12200 |
| Certification | UL94, ASTM E84, SGS |
Available Split System Air Conditioner Installation Kit Sizes
| 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 |
Line Set Size and Air Conditioner 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 mini split system |
Customization and OEM Manufacturing Services
DABUND provides OEM and ODM manufacturing services for HVAC brands, wholesalers, importers, and distributors. Custom specifications can be supplied according to target market requirements, packaging standards, and installation habits.
Custom insulation color: white PE or black rubber
Logo printing on insulation
Custom lengths, pipe sizes, and wall thickness options
Custom packaging for retail, wholesale, and project supply
OEM and ODM support for HVAC line set brands
Why Choose DABUND HVAC Installation Kit?
Over 14 years of HVAC manufacturing experience
Monthly production capacity up to 1,000,000 pcs
Fast sample delivery within 5 days
Strict quality control with SGS certification
Support for insulated copper pipe, mini split line set, aluminum pipe, and HVAC parts
Global export and logistics support for distributors and contractors
DABUND provides a one-stop HVAC line set and installation kit solution for customers who need reliable quality, stable supply, and flexible customization.
DABUND Factory
We produce insulated copper pipe, mini split line set, aluminum pipe, and HVAC parts for global customers.
SGS Certificate
DABUND mini split line set insulation is available with polypropylene or black rubber materials with UV resistance, and can meet ASTM E84, UL94, ASTM D1056, and ASTM G21 requirements according to product specification.
Exhibition
DABUND joins HVAC exhibitions worldwide to help customers evaluate mini split line set products, installation kits, and HVAC parts face to face.
FAQ
What is a 25 ft 1/4" x 1/2" air conditioner installation kit used for?
It is used to connect the indoor and outdoor units of a mini split air conditioner or heat pump system. The kit provides refrigerant piping, drainage, communication wiring, and wall installation accessories.
What components are included in this mini split installation kit?
The kit typically includes insulated copper pipes, communication cable, condensate drain hose, wall sleeve, protective cover, and pre-flared copper pipe ends with nuts.
What HVAC system size is suitable for a 1/4" x 1/2" line set?
A 1/4" + 1/2" copper line set is commonly used for 12000 BTU to 18000 BTU mini split air conditioners, usually around 1.5 ton to 2.0 ton systems. Always confirm the required line size with the air conditioner manufacturer before installation.
Why choose a pre-insulated copper line set?
A pre-insulated line set saves installation time, improves insulation consistency, helps reduce condensation, and protects the copper tubing during indoor and outdoor installation.
Is this HVAC installation kit suitable for outdoor use?
Yes. The UV-resistant insulation is designed to help protect the copper pipes from sunlight, weather exposure, and aging during outdoor use.
Can this line set be used for R410A or modern refrigerants?
The copper tubing is designed for HVAC refrigerant line applications and supports high-pressure refrigerant systems when the correct pipe size, wall thickness, flare connection, evacuation, and pressure testing procedures are followed.
Can I customize the installation kit for my HVAC brand?
Yes. DABUND offers OEM and ODM services, including custom insulation color, logo printing, pipe length, packaging, and product specifications for HVAC brands, importers, wholesalers, and distributors.
How do I choose the correct mini split line set size?
The correct size depends on the BTU capacity, refrigerant type, system design, and manufacturer requirements. For example, 1/4" + 1/2" is commonly used for 12K–18K mini split systems, but installers should always follow the AC unit installation manual.
Who should buy this 25 ft split system air conditioner installation kit?
This kit is suitable for HVAC contractors, mini split system brands, importers, distributors, wholesalers, project suppliers, and professional installers who need a complete copper line set solution.
