1/2 in × 3/4 in × 50 ft Insulated Copper Tubing – Pre-Insulated HVAC Refrigerant Line Set

1/2" x 3/4" x 50 ft Insulated Copper Tubing

The 1/2" x 3/4" x 50 ft insulated copper tubing is a pre-insulated HVAC refrigerant line set designed for mini split air conditioners, ductless HVAC systems, heat pumps, centralized AC units and light commercial refrigeration applications.

This 50 ft line set includes a 1/2" refrigerant line and a 3/4" refrigerant line with factory-applied black rubber insulation. It helps support efficient refrigerant transport, reduce heat transfer, control condensation and protect copper tubing during indoor and outdoor installation.

Dabund Pipe supplies insulated copper tubing, mini split line sets, refrigeration copper pipe and HVAC parts for contractors, wholesalers, distributors, importers and private-label HVAC brands.

Product Overview: Pre-Insulated HVAC Refrigerant Line Set

This 1/2" x 3/4" x 50 ft insulated copper tubing provides a complete refrigerant line solution for HVAC systems that require a durable copper line set and consistent insulation performance.

Factory-applied insulation helps improve thermal efficiency, reduce pipe sweating, protect surrounding walls or ceilings from moisture damage and simplify installation compared with field-wrapped copper tubing.

Key Features of 1/2" x 3/4" x 50 ft Insulated Copper Tubing

• 50 ft pre-insulated copper tubing for HVAC refrigerant line installation.

• 1/2" and 3/4" copper line pairing for compatible larger HVAC systems.

• Made from 99.9% pure copper for stable refrigerant flow and long-term reliability.

• Copper tubing can meet ASTM B280 and C12200 standards.

• Factory-applied black rubber insulation helps reduce heat gain, heat loss and condensation.

• UV-resistant insulation jacket supports indoor and outdoor line runs.

• Pressure rating options from 2100 PSI to 7000 PSI.

• Compatible with common HVAC refrigerants such as R410A and R32 when installed correctly.

• Suitable for mini split AC, heat pump, ducted AC and light commercial HVAC applications.

• OEM logo printing, custom packaging and bulk supply are available.

Standard Refrigerant Line Sizes for HVAC Use

The 1/2" x 3/4" copper line set is commonly selected for larger split air conditioning and HVAC systems that require higher refrigerant flow capacity. Final line size selection should always follow the equipment manufacturer’s installation manual.

1/2" Copper Line

The 1/2" copper line is used in compatible HVAC systems according to system design, refrigerant type and manufacturer requirements.

3/4" Copper Line

The 3/4" copper line is the larger refrigerant line in compatible systems, helping support return flow and stable operation in higher-capacity HVAC installations.

50 ft Length for Residential and Light Commercial Runs

A 50 ft insulated copper line set is suitable for moderate indoor-to-outdoor unit distances. It helps reduce the need for additional couplings or extensions when installing ductless mini split systems, heat pumps or split AC units.

• Suitable for residential HVAC installations.

• Useful for apartment, office and light commercial AC projects.

• Supports moderate line distance between indoor and outdoor units.

• Helps simplify procurement for HVAC contractors and wholesalers.

Factory-Applied Insulation for Thermal Protection

Enhanced Thermal Efficiency

Factory-applied insulation helps maintain stable refrigerant temperatures along the copper line, reducing unwanted heat gain or heat loss that can reduce HVAC system efficiency.

Condensation Prevention

Pre-insulated tubing minimizes surface condensation, helping protect walls, ceilings, building materials and nearby surfaces from moisture damage, mold risk and corrosion.

UV-Resistant and Durable Insulation Jacket

The insulation is designed for both indoor pathways and outdoor refrigerant line runs, offering practical protection against sunlight, moisture and normal installation wear.

Premium Copper Construction for Long-Term Reliability

99.9% Pure Copper Tubing

High-purity copper provides excellent thermal conductivity, corrosion resistance and reliable refrigerant transfer for HVAC and refrigeration systems.

High Pressure Capacity for HVAC Systems

Pressure rating options from 2100 PSI to 7000 PSI help support modern HVAC refrigerants such as R410A and R32 when installed according to system requirements and local HVAC codes.

99.9% Pure Copper

Black Rubber Insulated Pipe

Plastic Cap Protection

Features of Black Rubber Pipe Insulation

Black rubber pipe insulation is designed for HVAC copper line protection. It supports thermal insulation, moisture resistance and condensation control for indoor and outdoor refrigerant line applications.

• Temperature range from -40℃ to 120℃.

• Helps reduce surface condensation on refrigerant lines.

• Works as both insulation layer and moisture-proof layer.

• No additional vapor barrier is required in many standard installations.

• Protects copper tubing from moisture, weather exposure and normal installation damage.

HVAC Compatibility and Applications

Works with Mini Split and Ductless AC Systems

This insulated copper tubing is suitable for ductless mini split air conditioners, heat pump systems, centralized AC units, residential HVAC systems and light commercial installations that require a 1/2" x 3/4" line set.

• Ductless mini split air conditioners.

• Heat pump systems.

• Residential and light commercial AC setups.

• Centralized air ducted units.

• Replacement and retrofit HVAC line set projects.

Compatible with Standard Refrigerants

This pre-insulated copper tubing is compatible with common modern refrigerants, including R410A, R32 and similar HVAC refrigerants, when installed according to manufacturer instructions.

Key Benefits of This Insulated Copper Tube

Saves Installation Time and Labor

Factory-installed insulation eliminates most additional field insulation wrapping, helping installers save time and reduce installation costs.

Improves HVAC Energy Performance

Insulated copper tubing helps preserve refrigerant temperature stability, supporting consistent cooling and heating performance with less energy loss.

Protects Against Moisture and Structural Damage

Proper insulation reduces condensation and dripping that could damage building materials or lead to mold risk, especially in humid HVAC installation environments.

Technical Specifications

Installation Tips for Best Performance

Measure and Plan the Line Route Before Installation

Correct line length planning minimizes unnecessary bends and helps ensure smooth refrigerant flow. Confirm that the 50 ft line length is within the equipment manufacturer’s allowed line run.

Protect Insulation at Structural Penetrations

Use protective sleeves or grommets where lines pass through walls or ceilings to prevent insulation wear, compression or tearing.

Secure with HVAC-Rated Clamps and Supports

Install line supports along the run to prevent sagging, reduce vibration and maintain insulation integrity over time.

Follow Equipment Manufacturer Requirements

Always follow the HVAC equipment manufacturer’s requirements for line size, line length, refrigerant charge, flare connection and local installation code.

Insulated Copper Tubing Size Options

Recommended Applications by AC Capacity

The 1/2" x 3/4" insulated copper tubing is commonly used for larger split AC and HVAC installations. For exact system capacity matching, confirm the required copper line size with the HVAC equipment manufacturer.

Why Choose This 50 ft Insulated Copper Tubing?

Reliable HVAC Performance and Durability

Built with 99.9% pure copper and UV-resistant insulation, this line set supports long-term performance, consistent refrigerant flow and reduced energy loss.

Easy Installation for HVAC Professionals

Pre-insulated tubing simplifies installation for HVAC contractors and experienced installers, helping reduce field work, labor time and potential insulation errors.

Ideal for Residential and Light Commercial Projects

This 50 ft line set is suitable for homes, apartments, offices and light commercial applications where a reliable HVAC refrigerant line run is required.

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 tubing products to customers face to face.

FAQ

What is 1/2" x 3/4" x 50 ft insulated copper tubing used for?

It is used as a pre-insulated HVAC refrigerant line set for mini split air conditioners, heat pumps, ducted AC systems and light commercial HVAC applications.

What does 1/2" x 3/4" mean?

It refers to the outer diameters of the two copper refrigerant lines. This product includes one 1/2" copper line and one 3/4" copper line for compatible HVAC systems.

Why is insulation important for HVAC line sets?

Insulation helps prevent heat gain, heat loss and condensation. It improves energy efficiency and protects building structures from moisture damage.

Is this insulated copper tube suitable for outdoor use?

Yes. The UV-resistant insulation is designed for both indoor and outdoor line runs in HVAC applications when installed correctly.

Can this tubing be used with R410A and R32 refrigerants?

Yes. This product is compatible with common HVAC refrigerants such as R410A and R32 when installed according to system specifications and local HVAC code requirements.

Does this copper tubing meet ASTM standards?

The copper tubing can meet ASTM B280 and C12200 standards for HVAC refrigerant line applications.

Can Dabund provide other sizes and lengths?

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

Can the insulation be customized?

Yes. Dabund can support custom insulation thickness, logo printing, size marking, meters marking and private-label packaging for OEM and ODM orders.

Are you a trading company or manufacturer?

Dabund is a manufacturer of insulated copper tubing, 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 in advance according to factory schedule.