Professional-grade 100 ft 3/8″ × 5/8″ line set engineered for mini split air conditioners, ductless HVAC systems, and heat pump installations. This pre-insulated copper refrigerant line set delivers reliable performance, energy efficiency, and long-lasting durability for residential and commercial HVAC applications.
The Mini Split Long Line Set is twin already. So buy it now.
Product Overview – 100 ft Mini Split Line Set
This 100 ft long line set provides a complete refrigerant piping solution with factory-applied insulation, making installation faster and easier:
3/8″ liquid line & 5/8″ suction line
Length: 100 ft (30.5 meters)
Pristine copper tubing with pre-insulation
Designed for extended run applications between indoor and outdoor units
Ideal for HVAC professionals, contractors, wholesalers, and experienced DIY installers requiring a long-distance reliable airflow and refrigerant connection.
Technical Specifications – Built for HVAC Performance
Premium Copper Refrigerant Tubing
Material: 99.9% pure seamless copper
Sizes: 3/8″ (liquid) and 5/8″ (suction)
Excellent thermal conductivity for efficient refrigerant flow
Corrosion resistance for prolonged use
Uniform wall thickness for pressure stability
Copper remains the industry standard for HVAC refrigerant lines due to its stability, strength, and heat transfer characteristics.
Factory-Applied Insulation
High-density insulation applied at the factory
UV and moisture resistant outer jacket
Reduces condensation and thermal loss
Improves energy efficiency and system performance
Pre-insulated tubing simplifies installation and ensures consistent line protection in varied installation conditions.
Features of pipe insulation tubing:
![White PE Embossed insulated pipe]( "insulated pipe")
Key Benefits of This Mini Split Line Set
Optimized for Long Line Runs
At 100 ft, this line set is ideal for installations requiring extended piping distance — perfect for large homes, office buildings, and complex HVAC layouts.
Energy-Efficient Performance
The insulated design helps minimize heat transfer, reduces energy loss, and enhances overall cooling/heating efficiency — translating into lower energy costs.
Easy Installation & Labor Savings
Pre-insulated with pre-flared ends, this line set reduces installation time, on-site labor, and troubleshooting, saving time and money on every job.
Applications – Where This Line Set Can Be Used
This 100 ft 3/8″ × 5/8″ line set is suitable for:
Residential mini split AC systems
Multi-zone ductless HVAC installations
Heat pump refrigerant lines
Long-distance HVAC projects
Retrofit and replacement installations
Perfect for HVAC technicians, service professionals, and DIY users alike.
Installation Tips & Best Practices
Ensure reliable HVAC performance with these expert installation tips:
Measure total line run before installation.
Avoid sharp bends or kinks to maintain consistent refrigerant flow.
Maintain continuous insulation coverage for optimal thermal protection.
Use proper flaring and torque tools for leak-free connections.
Following these best practices helps maximize efficiency and reduce future maintenance issues.
![White PE copper line set]( "Copper Line Set")
Mini Split Line Set
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 AC line set 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 HVAC lineset 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 HVAC lineset 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 100 ft 3/8" x 5/8" Line Set for Mini Split from DABUND PIPE
We are manufacturer of mini split line set since 2008 years, have good experience of producing and exporting. We have cooperated 9 years forwarder, can guarantee the shipment. Every week we load at least 6-8 40HQ to different countries. Choose Dabund You will win the business.
Individual pre-insulated rolls to perfectly fit every ductless mini-splits, VRF, heat pumps and unitary systems installation.
Quality products with competitive pricing
Peace of mind with professional services
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. Is this 100 ft line set compatible with all mini split brands?
Yes — this 3/8″ × 5/8″ line set is compatible with most mini split and ductless HVAC systems sold in the US and international markets. Always verify specifications with the system manufacturer.
8.Can this line set be cut for custom installations?
Yes, the copper tubing can be trimmed to fit specific installations. Proper flaring and sealing are required after cutting to maintain leak-proof integrity.
9.Is additional insulation required for outdoor use?
The factory-applied insulation is designed for standard outdoor installations. In extreme environments, additional UV or weatherproof covering may be recommended.
