3/8 in × 7/8 in × 50 ft Insulated Copper Pipe for Split AC – High-Performance HVAC Refrigerant Tubing

3/8" x 7/8" x 50 ft Insulated Copper Pipe for Split AC

The 3/8" x 7/8" x 50 ft insulated copper pipe is a high-performance HVAC refrigerant tubing solution designed for split air conditioners, ductless mini split systems, heat pumps and refrigeration line applications.

This pre-insulated copper pipe includes a 3/8" refrigerant line and a 7/8" refrigerant line with factory-applied white PE insulation. It helps support stable refrigerant flow, reduce energy loss, prevent condensation and improve installation efficiency.

Dabund Pipe supplies insulated copper pipe, mini split line sets and HVAC refrigerant tubing for HVAC professionals, contractors, wholesalers, installers and global B2B buyers.

Product Overview: Insulated Copper Pipe for Split Air Conditioners

This 3/8" x 7/8" x 50 ft insulated copper pipe is a ready-to-install HVAC line set that combines seamless copper tubing with durable protective insulation. It is built for dependable refrigerant flow and stable thermal performance in residential and commercial HVAC systems.

Whether used for a new split AC installation, mini split replacement project or heat pump refrigerant line run, this insulated copper pipe helps reduce heat gain, moisture condensation and installation labor.

Key Features of 3/8" x 7/8" x 50 ft Insulated Copper Pipe

• 50 ft insulated copper pipe for split AC and HVAC refrigerant line installation.

• 3/8" liquid line and 7/8" suction line for compatible HVAC systems.

• Made from 99.9% pure seamless copper for stable refrigerant transfer.

• Pre-insulated with white PE insulation for improved energy efficiency.

• Moisture-resistant and UV-resistant insulation jacket for indoor and outdoor use.

• Helps reduce condensation, heat loss and refrigerant temperature fluctuation.

• Suitable for split AC, heat pump, ductless mini split and refrigeration applications.

• Easy to handle, route, cut and install for professional HVAC projects.

• OEM logo printing, insulation thickness and packaging customization are available.

Technical Specifications

Premium Copper Tubing for HVAC Performance

99.9% Pure Seamless Copper

The copper tubing is made from 99.9% pure seamless copper, providing excellent heat transfer, corrosion resistance and pressure performance for modern HVAC refrigerant systems.

3/8" x 7/8" HVAC Line Size

The 3/8" x 7/8" line size is commonly used for larger ductless mini split systems and split air conditioner installations. Final size selection should always follow the HVAC equipment manufacturer’s installation manual.

Stable Refrigerant Flow

Proper copper line sizing helps maintain refrigerant circulation, system efficiency and compressor protection in split AC and heat pump applications.

High-Quality White PE Insulation Features

Factory-applied insulation helps maintain refrigerant temperature stability, reduce condensation and protect the copper tubing from outdoor exposure, moisture and installation damage.

• Pre-insulated tubing reduces field insulation work.

• White PE insulation helps reduce heat gain and heat loss.

• Moisture-resistant jacket helps prevent condensation on line surfaces.

• UV-resistant outer surface supports outdoor refrigerant line runs.

• Easy to route for split AC, heat pump and mini split installation.

Key Benefits of This Insulated Copper Pipe

Enhanced Energy Efficiency

Insulated copper tubing minimizes thermal loss and helps HVAC systems maintain stable cooling or heating performance, reducing unnecessary energy waste during operation.

Superior Moisture Control

Insulation helps prevent condensation from forming on the refrigerant line surface, reducing the risk of water damage, mold growth and corrosion around building materials.

Easy Installation and Time Savings

The pre-insulated design saves jobsite labor because additional insulation wrapping is not required in most standard installations.

99.9% Pure Copper

White PE Insulated Pipe

Plastic Cap Protection

Pipe Insulation Tubing Structure

The white PE insulated copper pipe uses a durable insulation structure to support thermal protection, moisture control and long-term HVAC service in indoor and outdoor environments.

Embossed White PE Outer Layer

The outer layer helps resist wear, aging and sunlight exposure while protecting the insulation from normal installation handling.

Closed-Cell Foam Insulation

The insulation layer helps reduce heat transfer and moisture absorption, supporting stable refrigerant temperature during cooling and heating operation.

Inner Protective Layer

The inner insulation layer helps protect the copper pipe surface and maintain insulation performance along the full line run.

Thermal Insulation Pipe Production

Insulated Pipe Warehouse

Inner Layer Insulated Pipe

Applications: Where This HVAC Copper Line Is Used

This 50 ft insulated copper pipe is suitable for HVAC and refrigeration applications that require reliable pre-insulated refrigerant lines.

• Split air conditioners for residential and commercial projects.

• Ductless mini split HVAC units.

• Heat pump systems.

• Retrofit and replacement HVAC line set projects.

• Refrigeration line runs requiring insulated copper tubing.

• HVAC contractors, installers and distributor inventory.

Installation Best Practices for Maximum Performance

1. Measure the required line length before cutting.

2. Confirm that the line size matches the HVAC equipment manufacturer’s requirements.

3. Avoid sharp bends, kinks or crushed sections that restrict refrigerant flow.

4. Keep insulation coverage complete along the full refrigerant line run.

5. Use proper cutting, deburring, flaring and sealing techniques to prevent leaks.

6. Secure the line with suitable clamps, brackets or line set covers where needed.

Following these installation practices helps maintain system performance, reduce refrigerant leakage risk and improve long-term HVAC reliability.

Insulated Copper Pipe for Split AC Size Options

Recommended Applications by AC Capacity

The 3/8" x 7/8" insulated copper pipe is commonly used for 6.0 ton to 8.0 ton ductless mini split systems and many 72,000 BTU to 96,000 BTU applications. Final sizing should always follow the HVAC equipment manufacturer’s requirements.

Why Choose 3/8" x 7/8" x 50 ft Insulated Copper Pipe from Dabund?

Manufacturer Since 2008

Dabund Pipe is a manufacturer of insulated copper pipe, mini split line sets, aluminum pipe and HVAC parts with long-term production and export experience.

Individual Pre-Insulated Rolls

Individual pre-insulated rolls are designed to fit ductless mini splits, VRF systems, heat pumps and unitary HVAC system installations.

Competitive B2B Supply

Dabund supports HVAC wholesalers, contractors and private-label buyers with quality products, competitive pricing, OEM customization and professional service.

Dabund Factory

Dabund produces insulated copper pipe, mini split line set, aluminum pipe and HVAC parts for global customers.

SGS Certificate

Mini split line set insulation can be made of polypropylene or black rubber with UV resistance, meeting ASTM E84, UL94, ASTM D1056 and ASTM G21 requirements.

Exhibition

Dabund joins HVAC exhibitions worldwide to present mini split line set and insulated copper pipe products to customers face to face.

FAQ

What is 3/8" x 7/8" x 50 ft insulated copper pipe used for?

It is used as a pre-insulated refrigerant line set for split air conditioners, mini split systems, heat pumps and HVAC refrigerant line installations.

What does 3/8" x 7/8" mean?

It refers to the outer diameters of the two copper refrigerant pipes. The 3/8" line is commonly the liquid line, and the 7/8" line is commonly the suction line in compatible systems.

What AC capacity is this line set commonly used for?

The 3/8" x 7/8" line set is commonly used for 6.0 ton to 8.0 ton ductless mini split systems and many 72,000 BTU to 96,000 BTU applications.

Is this insulated copper pipe compatible with all refrigerants?

It is compatible with common refrigerants such as R410A, R32 and R22 when installed according to system specifications. Always verify compatibility with the HVAC equipment manufacturer before installation.

Can this insulated pipe be cut to custom lengths?

Yes. The copper tubing can be cut to fit specific installation needs. Proper cutting, deburring, flaring and sealing are required after cutting.

Does this pipe require additional insulation?

In most standard HVAC installations, no additional insulation is required because the pipe comes with factory-applied insulation. Local codes or harsh environments may require extra protection.

Is this insulated copper pipe suitable for outdoor use?

Yes. The moisture-resistant and UV-resistant insulation jacket supports outdoor line runs when installed correctly and protected according to project requirements.

Can Dabund provide other sizes and lengths?

Yes. Dabund can provide multiple insulated copper pipe sizes and lengths, including 15 m, 20 m, 25 m, 30 m and 50 m, with different insulation thickness options.

Are you a trading company or manufacturer?

Dabund is a manufacturer of insulated copper pipe, mini split line sets, aluminum pipe and HVAC parts.

Can I get a free sample?

Yes. Dabund can provide qualified customers with 3 pieces of free samples. Express cost may need to be covered by the buyer. You can request samples through the free sample page.

Can I print my logo?

Yes. Dabund accepts OEM and ODM orders, including logo printing, brand marking and customized packaging.

What payment terms are available?

Payment terms may include T/T, L/C at sight, credit card and other agreed payment methods depending on order details.

What delivery terms can you offer?

Dabund can offer common international trade terms such as EXW, FOB, CFR and CIF.

How long is your delivery time?

Normal delivery time is usually 15 to 20 days. For urgent orders, production and shipment can be arranged according to factory schedule.