High-quality 35 ft pre-insulated mini split line set with 1/2″ liquid line and 3/4″ suction line copper tubing — ideal for connecting indoor and outdoor units in mini split air conditioners, ductless AC systems, and heat pumps.
Product Overview – HVAC-Ready Refrigerant Line Set
The 35 ft 1/2″ × 3/4″ mini split line set offers a complete, factory-insulated copper tubing solution for HVAC refrigerant connections. Designed for both residential and light commercial applications, this line set improves system performance, minimizes condensation, and simplifies installation.
Pre-Insulated Line Set for Thermal Efficiency
Factory-applied insulation saves installation time vs field wrapping
Maintains consistent refrigerant temperature over long runs
Reduces heat gain/loss and condensation risks
Standard 1/2″ × 3/4″ Line Sizes
1/2″ liquid line for refrigerant feed
3/4″ suction line for return gas
Common sizing for many mini split and ductless AC systems
Key Features & Benefits
Enhanced Energy Efficiency
Pre-insulated lines help preserve refrigerant temperature, supporting your HVAC system in maintaining cooling and heating performance while reducing energy waste.
Condensation Prevention & Moisture Control
Insulated tubing reduces surface condensation and dripping, protecting walls, ceilings, and surrounding materials from moisture damage.
Faster, Easier Installation
Factory insulation eliminates the need for onsite insulation wrapping, which saves labor time and ensures consistent insulation quality.
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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HVAC Compatibility & Applications
Works With Mini Split & Ductless HVAC Systems
This line set is perfect for:
Suitable for most models that match the 35 ft line length and 1/2″ × 3/4″ diameter configuration.
Compatible With Common Refrigerants
Designed to work with modern HVAC refrigerants such as R410A, R32, and other industry-standard refrigerants, meeting typical operating pressures and safety requirements.
Technical Specifications
| Feature | Detail |
| Line Length | 35 ft (10.67 m) |
| Liquid Line Size | 1/2″ |
| Suction Line Size | 3/4″ |
| Material | 99.9% Pure Copper |
| Insulation | Factory-applied, UV-resistant |
| Application | Mini Split, Ductless AC, Heat Pump |
| Compatible Refrigerants | R410A, R32, and similar refrigerants |
Installation Tips for Best Performance
Plan Line Path Before Installation
Measure the distance between indoor and outdoor units before starting. Plan the routing path to avoid tight bends or obstruction points that could hurt refrigerant flow or insulation integrity.
Protect Insulation at Wall Pass-Throughs
Use wall sleeve or protective grommets where the line set passes through the wall to prevent insulation wear or damage.
Secure Tubing With Clips or Brackets
Use proper supports along the run to prevent sagging, reduce vibration, and protect the insulation when exposed to wind or mechanical stress.
![Black rubber copper line set]( "Black rubber copper line set")
Mini Split Line Set
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 Mini split line set 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.
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 line set 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 Mini split line set 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 35 ft Mini Split Line Set
Reliable Performance & Quality Construction
Constructed with premium 99.9% pure copper and high-quality factory insulation, this line set delivers stable, efficient HVAC performance over its service life.
Ideal for Professional and DIY Installations
Whether you are a seasoned HVAC technician or an experienced DIY installer, this line set kit provides ease of use, dependable performance, and faster installation times.
Suitable for Residential & Commercial HVAC Projects
Perfect for home systems, apartments, offices, and light commercial spaces requiring a durable, efficient line set between indoor and outdoor components.
DABUND FACTORY
We produce Insulated Copper Pipe, Mini Split Line Set and Aluminum Pipe and HVAC Parts
![Factory Profile]()
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 “1/2″ × 3/4″” refer to in this line set?
It refers to the outer diameters of the refrigerant lines: 1/2″ liquid line and 3/4″ suction line, which is a standard pairing for many mini split and ductless HVAC systems.
8. Do I need extra insulation on site?
No — this product comes with factory-applied insulation, eliminating the need for field insulation wrapping in most installations.
9.Is this line set suitable for outdoor use?
Yes — the insulation is UV-resistant and weather-durable, making this line set suitable for outdoor refrigerant runs.
10.Is this compatible with R410A and R32 refrigerants?
Yes — this line set supports common HVAC refrigerants such as R410A, R32, and other industry-standard refrigerants designed for mini split systems.
