82 ft 3/8″ × 5/8″ Mini Split Long Line Set – Pre-Insulated HVAC Copper Refrigerant Tubing

Premium 82-foot long line set designed for mini split air conditioners and heat pump systems. Pre-insulated copper tubing with pre-flared ends provides reliable performance for residential and commercial HVAC installations.

The Mini Split Long Line Set is twin already. So buy it now.

Product Overview – 82 ft Mini Split Long Line Set

This high-quality HVAC long line set is engineered to meet the demands of modern ductless air conditioning systems:

• 82 ft length for extended run installations

• 3/8″ liquid line & 5/8″ suction line configuration

• Pre-insulated copper refrigerant tubing

• Pre-flared ends with nuts for easy, leak-free installation

• Durable insulation to minimize thermal loss and condensation

Perfect for professional installers, contractors, wholesalers, and HVAC supply distributors.

Technical Specifications – Built for HVAC Performance

Superior Copper Refrigerant Tubing

• Material: 99.9% pure seamless copper

• Diameter: 3/8″ (liquid) and 5/8″ (suction)

• Excellent thermal conductivity supports efficient refrigerant flow

• Corrosion-resistant for long-term use under varied conditions

Copper tubing is a trusted choice for HVAC systems due to its durability and heat transfer efficiency.

High-Density Pre-Insulation

• Factory-applied insulation for reduced installation time

• UV and moisture-resistant outer jacket

• Minimizes energy loss and improves system efficiency

• Protects against condensation and climate exposure

The pre-insulation ensures optimum thermal retention and supports effective HVAC performance.

Features of pipe insulation tubing:

Why Choose This Mini Split Long Line Set

Ideal for Extended HVAC Runs

This 82 ft long line set is perfect for installations requiring extended refrigerant line runs — especially for multi-zone systems in large homes, offices, or commercial spaces.

Easy & Time-Saving Installation

The pre-flared ends and included flare nuts significantly reduce on-site labor time, saving both installation costs and effort.

Reliable & Durable Performance

High-quality copper and robust insulation deliver consistent refrigerant flow, increased durability, and reduced maintenance over time.

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.

Applications – Where This Line Set Is Used

This extended line set is suitable for:

• Residential and multi-family HVAC applications

• Large mini split and heat pump installations

• Commercial buildings and office spaces

• Outdoor units requiring long line runs

• Retrofit and replacement projects

This versatile line set meets the needs of HVAC professionals and DIY installers alike.

HVAC Installation Best Practices

Follow these expert installation tips for best results:

1. Accurately measure the run length before installation.

2. Verify consistent insulation coverage to prevent energy loss.

3. Properly torque all flare nuts to prevent refrigerant leaks.

4. Maintain proper line slopes for effective moisture drainage.

Applying these best practices helps ensure HVAC performance and system longevity.

DABUND FACTORY

We produce Insulated Copper Pipe, Mini Split Line Set and Aluminum Pipe and HVAC Parts

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

Exhibition

We join the exhibitions all over the word, just to facilitate customers to experience our mini split line set face to face.

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 long line set compatible with all mini split brands?

Yes, this 82 ft 3/8″ × 5/8″ line set works with most ductless mini split and heat pump systems sold in the US and international HVAC markets. Always verify system specifications before installation.

8.Can the line set be trimmed if needed?

Yes — the copper tubing can be trimmed to the required length, but proper flaring and sealing must be followed to maintain system integrity.

9.Is additional insulation required for outdoor installation?

The factory pre-insulated line set supports outdoor installations; however, for extreme weather conditions, additional weatherproof covering is recommended.