Premium 75-foot pre-insulated copper pipe designed for HVAC and air conditioning systems, featuring industry-standard 1/2″ liquid and 3/4″ suction lines with factory-applied insulation for improved energy efficiency and condensation prevention.
The Mini Split Air Conditioner Line Set is twin already. So buy it now.
Product Overview – High-Quality Insulated HVAC Refrigerant Line
The 75 ft 1/2″ × 3/4″ insulated copper pipe delivers reliable thermal performance and long-term durability for mini split, ductless AC, heat pump, and other HVAC installations. Factory-applied insulation helps maintain refrigerant temperature and reduces installation labor compared to field-wrapped solutions.
Extended 75-Foot Length for Flexible Installations
Ideal for longer indoor-to-outdoor runs in homes, apartments, offices, and light commercial spaces
Eliminates the need for multiple line couplings, reducing potential leak points
Supports flexible routing through ceilings, walls, and crawlspaces
Standard 1/2″ × 3/4″ Refrigerant Line Configuration
1/2″ liquid line for refrigerant feed
3/4″ suction line for return gas
Common size pairing used in many split system and ductless HVAC applications
Factory-Applied Insulation for Thermal Efficiency
Consistent Refrigerant Temperature Control
Factory insulation helps preserve refrigerant temperature over the entire 75 ft run, reducing heat gain/loss and boosting HVAC performance.
Prevents Condensation & Moisture Buildup
Pre-insulated line sets minimize surface condensation and dripping, protecting walls, ceilings, and surrounding materials from moisture damage.
UV-Resistant and Weather-Durable Insulation Jacket
The insulation is UV-resistant and designed for both indoor and outdoor exposure, providing reliable performance in varied environmental conditions.
Premium Copper Construction for HVAC Reliability
99.9% Pure Copper Tubing
Made from high-purity copper that meets industry standards such as ASTM B280 and C12200
Excellent thermal conductivity for efficient heat transfer
Strong corrosion resistance for long-term durability
Built for High-Pressure HVAC Systems
Copper tubing is rated for high pressures typical in modern HVAC systems, making it suitable for use with common refrigerants and under varying operating conditions.
HVAC Compatibility & Applications
Designed for Mini Split & Ductless AC Installations
This insulated copper pipe is ideal for connecting indoor and outdoor units in:
Works With Common Refrigerants
Compatible with widely used refrigerants such as R410A, R32, and others meeting standard operating pressures.
Features of pipe insulation tubing:
![White PE Embossed insulated pipe]( "insulated pipe")
Key Benefits of This Insulated Copper Pipe
Reduces Installation Time and Labor
Factory-applied insulation eliminates most on-site insulation wrapping, saving labor time and minimizing potential installation errors.
Improves HVAC Energy Efficiency
Insulated refrigerant lines help maintain stable system temperatures, improving cooling and heating efficiency and reducing energy waste.
Cleaner, Professional HVAC Installations
Pre-insulated lines provide a neat, professional finish with consistent insulation quality, enhancing both performance and appearance.
Technical Specifications
| Specification | Detail |
| Length | 75 ft (22.86 m) |
| Liquid Line Size | 1/2″ (12.70 mm) |
| Suction Line Size | 3/4″ (19.05 mm) |
| Material | 99.9% Pure Copper |
| Insulation | Factory-applied, UV-resistant |
| Applications | Mini split, ductless AC, heat pumps |
| Refrigerants | R410A, R32, and similar |
| Standards | ASTM B280, C12200 |
Installation Tips for Best Performance
Plan Line Routing Before Installation
Measure the distance between indoor and outdoor units and plan the routing path to avoid sharp bends or tension that could restrict refrigerant flow.
Protect Insulation at Wall Penetrations
Use wall sleeves or protective grommets where the pipe passes through structures to maintain insulation integrity and prevent abrasion.
Support the Line Set Securely
Use HVAC clamps, straps, or brackets to secure long runs of tubing and minimize vibration, sagging, or insulation compression.
![White PE copper line set]( "Copper Line Set")
Insulated Copper Pipe
Size | Length | Insulation White PE | 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 used for 0.75TON - 1.0TON mini split air conditioner.
1/4 + 1/2 Mini split 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 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 pipe 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 pipe used for 54000 BTU and 72000 split air conditioner installation.
3/8 + 7/8 Insulated copper pipe 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 pipe 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 Pipe
Reliable Performance & Energy Efficiency
With premium copper and factory insulation, this line set delivers dependable performance, improved energy efficiency, and long-term durability across a range of HVAC applications.
Professional-Grade HVAC Installation Solution
Whether you’re an HVAC technician or an experienced DIYer, this insulated copper pipe simplifies installation while ensuring consistent quality and performance.
Ideal for US Residential & Light Commercial HVAC Projects
Designed for broad use — from homes to apartments, offices, and light commercial sites — this 75 ft pipe meets the needs of most standard HVAC run distances.
DABUND FACTORY
We produce Insulated Copper Pipe, Mini Split Line Set and Aluminum Pipe and HVAC Parts
![Factory Profile]( "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
![证书]( "证书")
Exhibition
We join the exhibitions all over the word, just to facilitate customers to experience our mini split line set face to face.
![TRADE SHOW]( "TRADE SHOW")
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″” mean?
It refers to the outer diameters of the copper refrigerant tubes — 1/2″ for the liquid line and 3/4″ for the suction line — a standard configuration used in many split system HVAC installations.
8. Is this insulated copper pipe suitable for outdoor use?
Yes — the factory-applied insulation is UV-resistant and designed for both indoor and outdoor refrigerant line runs.
9. Do I need extra insulation in the field?
No — this product comes with factory-applied insulation that eliminates the need for additional field wrapping in most installations.
10.Can this pipe be used with R410A and R32 refrigerants?
Yes — this insulated copper pipe is compatible with common refrigerants such as R410A and R32, meeting typical HVAC pressure and temperature requirements.
