3/8″ × 3/4″ × 50 ft HVAC Line Set – Premium Pre-Insulated Copper Refrigerant Tubing

High-quality 3/8″ × 3/4″ HVAC line set designed for mini split, split air conditioners, and heat pump systems. This 50-foot pre-insulated copper refrigerant line set delivers reliable performance, superior energy efficiency, and long-lasting corrosion resistance for both residential and commercial HVAC installations.

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

Product Overview – 50 ft HVAC Line Set for Air Conditioner Installation

This complete refrigerant piping solution features premium copper tubing with factory-applied insulation to simplify installation and improve system efficiency:

• Liquid Line Diameter: 3/8″

• Suction Line Diameter: 3/4″

• Length: 50 ft (15.2 meters)

• Pre-insulated copper refrigerant tubing

• Designed for extended refrigerant runs between indoor and outdoor units

Ideal for professional HVAC technicians, contractors, wholesalers, and experienced DIY installers.

Technical Specifications – Built for Optimal HVAC Performance

Premium Copper Refrigerant Tubing

• Material: 99.9% pure seamless copper

• Excellent thermal conductivity for fast heat transfer

• Durable corrosion resistance for long service life

• Consistent wall thickness for reliable refrigerant pressure

Copper tubing remains the industry standard for HVAC refrigerant lines due to durability, performance, and ease of installation.

High-Density Pre-Insulation Features

• Factory-applied insulation reduces heat gain and loss

• UV and moisture-resistant outer jacket

• Minimizes condensation and prevents energy waste

• Helps maintain system efficiency in hot and cold climates

Pre-insulated tubing ensures continuous thermal protection and simplifies installation without adding site labor.

Features of pipe insulation tubing:

Key Benefits of This HVAC Line Set

Designed for Extended Line Runs

At 50 ft, this line set supports longer installations, giving HVAC installers flexibility when positioning indoor and outdoor units.

Saves Time & Installation Costs

Pre-insulated tubing with pre-flared ends helps reduce installation time and labor costs on every job.

Enhanced Energy Efficiency

Minimized thermal loss in the refrigerant lines means improved cooling and heating performance — lowering overall operational energy costs.

Applications – Where This HVAC Line Set Is Used

This 50 ft 3/8″ × 3/4″ HVAC line set is ideal for:

• Residential split air conditioner installations

• Mini split and ductless HVAC systems

• Heat pump line extensions

• Replacement refrigerant line projects

• Light commercial HVAC setups

Suitable for professional HVAC technicians and qualified DIY installers alike.

Installation Tips for Best Performance

To ensure reliable performance and longevity of your HVAC system:

1. Measure total refrigerant run length accurately before installation.

2. Avoid kinks or sharp bends to maintain consistent refrigerant flow.

3. Ensure continuous insulation coverage to prevent thermal loss.

4. Use proper flaring and torque tools for leak-proof connections.

Following these HVAC best practices improves system reliability and reduces future maintenance.

HVAC 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 HVAC 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 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 HVAC lineset 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 HVAC lineset used for 54K and 72K split air conditioner installation.

3/8 + 7/8 Insulated copper piping apply for 72K - 96K ductless mini split air conditioner.

Why Choose HVAC Line Set from DABUND PIPE

We are manufacturer of HVAC lineset 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

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 line set compatible with most mini split and AC brands?

Yes — this 3/8″ × 3/4″ line set works with most ductless and split air conditioning systems. Always confirm specifications with your HVAC system manufacturer.

---

8.Can the copper line set be cut to a custom length?

Yes — the copper tubing can be trimmed to the required length. After cutting, re-flare and seal the ends properly to maintain system integrity.

---

9.Is additional insulation required for outdoor use?

The factory pre-insulation is designed for outdoor lines. In extreme conditions or high UV exposure, adding a protective conduit is recommended.