Premium 75 ft insulated copper tube with 3/4 in suction and 1/2 in liquid refrigerant line configuration — engineered for HVAC applications including mini split, ductless air conditioner, heat pump, and other air conditioning systems requiring reliable thermal insulation and efficient refrigerant transport.
Product Overview – Factory-Insulated HVAC Copper Line Set
The 3/4 in × 1/2 in × 75 ft insulated copper tube combines high-quality copper tubing with factory-applied insulation to deliver improved thermal performance, reduced condensation, and easier installation compared with field-wrapped alternatives. It is suitable for extended run lengths between indoor and outdoor HVAC components.
Long 75 ft Length for Flexible Installations
Ideal for larger homes, multi-story buildings, or rooftop HVAC setups
Reduces the need for multiple coupling joints
Supports clean routing through walls, ceilings, and crawl spaces
Standard 3/4 in × 1/2 in Refrigerant Line Sizes
3/4 in suction line for return refrigerant gas
1/2 in liquid line for refrigerant feed
Common size pairing for a wide range of HVAC and mini split systems
Factory-Applied Insulation – Thermal Protection & Efficiency
Enhanced Heat Retention and Energy Efficiency
Factory insulation maintains stable refrigerant temperatures throughout the line set, reducing energy loss and improving system efficiency.
Reduces Condensation and Moisture Issues
Pre-insulated tubing minimizes surface condensation, helping to protect adjacent surfaces such as walls and ceilings from water damage or mold growth.
UV-Resistant and Weather-Durable Jacket
The insulation jacket is designed to be UV-resistant, workable in diverse climates, and suitable for both indoor and outdoor line runs.
Premium Copper Construction for HVAC Reliability
99.9% Pure Copper Tubing
Constructed from 99.9% pure copper, this insulated tube provides excellent thermal conductivity, corrosion resistance, and mechanical strength — ideal for high-pressure HVAC operation within normal system loads.
Meets Industry Copper Standards
The tubing meets common HVAC industry standards for copper line sets, ensuring safe refrigerant flow and compatibility with current HVAC equipment designs.
HVAC Compatibility & Applications
Designed for Mini Split & Ductless AC Systems
This insulated copper tube is suitable for connecting indoor and outdoor units in:
Compatible with Common Refrigerants
Works with modern HVAC refrigerants including R410A, R32, and similar types that meet typical system pressure and performance requirements.
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.
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Key Benefits of Insulated Copper Tubing
Simplifies HVAC Installation and Saves Labor
Factory-installed insulation eliminates the need for field wrapping during installation, saving time and minimizing onsite labor.
Improved HVAC Energy Efficiency
Insulation helps preserve refrigerant temperatures along the run, improving cooling/heating performance and reducing energy waste.
Protection Against Moisture and Structural Damage
Pre-insulated tubing helps reduce condensation and dripping that could otherwise lead to water damage or deterioration of surrounding materials.
Technical Specifications
| Feature | Detail |
| Line Length | 75 ft (22.86 m) |
| Liquid Line Size | 1/2 in (12.7 mm) |
| Suction Line Size | 3/4 in (19.05 mm) |
| Material | 99.9% Pure Copper |
| Insulation | Factory-applied, UV-resistant |
| Application | Mini split, ductless AC, heat pumps |
| Compatible Refrigerants | R410A, R32, similar HVAC refrigerants |
| Temperature Range | Works between –40 °C to +120 °C (insulation range) |
Installation Tips for Best Results
Plan Line Routing Before Installation
Measure distance and plan the best path between indoor and outdoor components to avoid sharp bends or obstructions.
Protect Insulation at Penetrations
Use protective sleeves or grommets where the tubing passes through walls to prevent insulation damage.
Secure Long Runs with Support Clips
Use clips, straps, or brackets to support the line set and reduce vibration or sagging over long distances.
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Insulated Copper Tubing
Size | Length | Insulation Black Rubber | Flame Resistant |
1/4+3/8 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
1/4+1/2 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
1/4+5/8 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
3/8+5/8 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
3/8+3/4 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
1/2+3/4 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
3/8+7/8 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
1/4 + 3/8 Insulated copper pipe for Split AC 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 Insulated copper line set 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 Insulated copper tube used for 54000 BTU and 72000 split air conditioner installation.
3/8 + 7/8 Insulated copper piping 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 Insulated copper tubing used for 54K and 72K split air conditioner installation.
3/8 + 7/8 Insulated copper pipe apply for 72K - 96K ductless mini split air conditioner.
Why Choose This 75 ft Insulated Copper Tube
Reliable HVAC Performance & Durable Design
Constructed with 99.9% pure copper and factory insulation, this line set delivers long-lasting performance and improved system efficiency.
Easy Installation for Professionals & DIYers
With factory insulation and standard sizing, this tube simplifies HVAC line runs for both seasoned technicians and experienced DIY installers.
Ideal for Residential & Light Commercial HVAC Projects
Perfect for homes, apartments, offices, and light commercial properties requiring reliable refrigerant tubing over moderate distances.
DABUND FACTORY
We produce Insulated Copper Pipe, Mini Split Line Set and Aluminum Pipe and HVAC Parts
![DABUND FACTORY COPPER LINE SET PACKAGE]( "DABUND FACTORY COPPER LINE SET PACKAGE")
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.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 “3/4 in × 1/2 in” mean?
It refers to the outer diameters of the two copper refrigerant tubes — 3/4 in for the suction line and 1/2 in for the liquid line — a common HVAC size pairing.
8.Is this product suitable for outdoor HVAC installations?
Yes — the factory-applied insulation is UV-resistant and weather-durable, making it suitable for exterior refrigerant runs.
9.Do I need to add more insulation on site?
No — this tube comes with pre-installed insulation that typically satisfies most installation requirements without additional field wrapping.
10.Will this tubing work with R410A and R32 refrigerants?
Yes — this insulated copper tube supports common refrigerants like R410A and R32, matching typical HVAC pressure and system requirements.
