75 ft 1/2″ × 3/4″ Insulated Copper Tubing – Pre-Insulated HVAC Refrigerant Line

75 ft 1/2" x 3/4" Insulated Copper Tubing for HVAC Refrigerant Lines

Premium 75 ft pre-insulated copper tubing with a 1/2" liquid line and 3/4" suction line is designed for HVAC refrigerant piping, mini split systems, ductless air conditioners and heat pump installations that require long, stable and well-protected refrigerant line runs.

This 75 ft 1/2" x 3/4" insulated copper line set combines high-purity copper tubing with factory-applied insulation to reduce heat gain, control condensation and protect the refrigerant lines during indoor and outdoor installation.

For HVAC contractors, distributors and installation kit suppliers, this pre-insulated copper tubing offers a practical solution for extended refrigerant runs in residential, apartment, rooftop and light commercial air conditioning projects.

Product Overview: Long HVAC Refrigerant Line with Factory Insulation

The 75 ft 1/2" x 3/4" insulated copper tubing is built for HVAC systems where the indoor and outdoor units are installed at a longer distance. The 75 ft length helps reduce the need for extra couplers and field joints, lowering potential leak points and improving installation efficiency.

The 1/2" liquid line supports refrigerant feed, while the 3/4" suction line supports return gas flow. This line size pairing is commonly used in larger mini split, ductless AC and heat pump applications, depending on the system manufacturer’s installation requirements.

Key Features of 75 ft 1/2" x 3/4" Insulated Copper Tubing

• 75 ft length for extended HVAC refrigerant line runs.

• 1/2" liquid line and 3/4" suction line for compatible HVAC systems.

• 99.9% pure copper tubing for reliable refrigerant transport.

• Factory-applied insulation helps reduce heat transfer and condensation.

• UV-resistant and weather-durable insulation for outdoor exposure.

• Suitable for mini split AC, ductless heat pumps and light commercial HVAC installations.

• Compatible with common modern refrigerants such as R410A and R32.

• Designed to support professional HVAC installation and bulk supply needs.

• OEM printing and custom packaging are available for distributors and private-label brands.

Designed for Extended Refrigerant Runs

A 75 ft HVAC refrigerant line set is useful when the outdoor condenser and indoor evaporator are installed far apart. It is suitable for second-story installations, rooftop condenser placement, wide building layouts and other projects where a short line set is not enough.

Using one continuous pre-insulated copper tubing run can help simplify installation, reduce connector usage and improve long-term system reliability. Installers should always confirm the maximum allowed line length according to the air conditioner manufacturer’s manual.

Factory-Applied Insulation for Thermal Protection

Enhanced HVAC Thermal Efficiency

Factory insulation helps maintain more stable refrigerant temperature along the copper line. This reduces unwanted heat gain or heat loss and supports better cooling and heating performance in HVAC systems.

Condensation Prevention and Moisture Control

Pre-insulated copper tubing helps reduce surface condensation and dripping. This is especially important for wall penetrations, indoor line runs, ceiling spaces and installations where moisture may damage nearby building materials.

UV-Resistant and Weather-Durable Jacket

The insulation jacket is designed for outdoor HVAC applications. UV resistance and weather durability help protect the line set from sunlight, rain, temperature changes and general installation exposure.

Premium Copper Construction for HVAC Reliability

The copper tubing is made from high-purity copper for strong heat transfer, stable refrigerant flow and reliable performance under HVAC operating pressure. It is suitable for air conditioning and refrigeration applications that require clean, durable and pressure-resistant copper tubing.

• 99.9% pure copper construction.

• Good corrosion resistance for HVAC refrigerant applications.

• Reliable pressure performance for modern air conditioning systems.

• Meets common industry standards such as ASTM B280 and C12200.

• Suitable for professional refrigerant piping installation.

HVAC Compatibility and Applications

This 75 ft 1/2" x 3/4" insulated copper tubing is suitable for connecting indoor and outdoor HVAC units in mini split, ductless and heat pump systems. It can be used in residential homes, apartments, offices, small commercial buildings and retrofit air conditioning projects.

• Mini split air conditioners.

• Ductless heat pump systems.

• Residential HVAC installations.

• Apartment and multi-room AC projects.

• Light commercial air conditioning systems.

• Extended refrigerant line runs between indoor and outdoor units.

The tubing is compatible with common modern HVAC refrigerants such as R410A, R32 and similar refrigerants. Final compatibility should be verified according to the equipment manufacturer’s technical requirements.

99.9% Pure Copper

Black Rubber Insulated Pipe

Plastic Cap Protection

Features of Pipe Insulation Tubing

The black rubber insulation is designed for HVAC applications where thermal protection, condensation control and durability are required. The insulation layer also works as a moisture-resistant barrier, reducing the need for additional field wrapping in many standard installations.

• Black rubber insulation for HVAC refrigerant lines.

• Temperature range from -40℃ to 120℃.

• Better moisture condensation control.

• Insulation layer also works as a moisture-proof layer.

• Helps reduce field installation labor and extra wrapping work.

• Suitable for indoor and outdoor HVAC piping protection.

Key Benefits of This Insulated Copper Tubing

Reduced Installation Labor and Field Insulation Work

Pre-insulated tubing eliminates much of the extra insulation wrapping required on site. This helps HVAC installers save labor time and maintain a cleaner final installation.

Improved HVAC Efficiency and System Performance

By helping preserve refrigerant temperature and reducing heat transfer along the line, the insulation supports efficient cooling and heating cycles.

Protects Against Moisture and Structural Damage

Proper insulation helps prevent condensation buildup and dripping, reducing moisture-related risks in walls, ceilings, attics and exterior line runs.

Suitable for Professional and Bulk Supply

Dabund supports HVAC distributors, wholesalers, contractors and installation kit brands with stable supply, custom printing and packaging options for insulated copper tubing and mini split line sets.

Technical Specifications

Installation Tips for Best Results

Confirm Line Length and Installation Path Before Installation

Measure the total distance between the indoor and outdoor units before installation. Make sure the 75 ft line length is suitable and does not exceed the HVAC equipment manufacturer’s approved line length.

Protect Insulation at Wall Penetrations

Use wall sleeves, grommets or protective covers where the copper tubing passes through walls or structures. This helps prevent insulation damage and abrasion during installation.

Secure Long Runs with Proper Supports

Use HVAC line brackets, clips or supports along long refrigerant line runs. Proper support helps prevent sagging, vibration and long-term damage to the insulation jacket.

Follow Equipment Manufacturer Requirements

Final installation should follow the air conditioner manufacturer’s instructions for line size, flare connection, refrigerant charge, maximum line length and elevation difference.

Insulated Copper Tubing Size Options

Recommended Applications by Line Set Size

The 1/2" x 3/4" size is often selected for larger HVAC systems that require higher refrigerant flow capacity. Always verify the correct tubing size with the equipment installation manual before ordering.

Why Choose This 75 ft Insulated Copper Tubing?

Reliable HVAC Performance and Long-Term Durability

With premium copper construction and UV-resistant insulation, this tubing provides dependable performance for demanding HVAC environments and extended refrigerant line runs.

Ideal for Professional and Experienced DIY Installation

The pre-insulated structure makes installation cleaner and more efficient. It is suitable for certified HVAC technicians, contractors and experienced installers who follow proper refrigerant system installation procedures.

Versatile Application Across HVAC Systems

This 75 ft insulated copper tubing is suitable for residential, apartment and light commercial HVAC projects where longer line runs are needed between the condenser and indoor unit.

Dabund Factory

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

SGS Certificate

Dabund mini split line set and insulated copper tubing can be made with polypropylene or black rubber insulation with UV resistance, meeting ASTM E84, UL94, ASTM D1056 and ASTM G21 requirements.

Exhibition

Dabund joins HVAC trade shows worldwide to meet customers, present insulated copper tubing products and support face-to-face communication with distributors, contractors and HVAC brands.

FAQ

What does 1/2" x 3/4" insulated copper tubing mean?

It refers to a copper refrigerant line set with a 1/2" liquid line and a 3/4" suction line. These are the outer diameters of the copper tubing used for HVAC refrigerant piping.

What is 75 ft insulated copper tubing used for?

It is used to connect indoor and outdoor units in mini split air conditioners, ductless heat pumps and HVAC systems where a longer refrigerant line run is required.

Is this tubing suitable for outdoor HVAC installations?

Yes. The factory-applied insulation is UV-resistant and weather-durable, making it suitable for outdoor line runs and exposed HVAC applications.

Do I need to wrap extra insulation on site?

In many standard applications, no extra insulation wrapping is required because the tubing already includes factory-applied insulation. However, local project requirements and equipment instructions should always be followed.

Is this tubing compatible with R410A and R32 refrigerants?

Yes. This insulated copper tubing is compatible with common modern HVAC refrigerants such as R410A and R32, subject to the equipment manufacturer’s installation requirements.

What copper standards does this product meet?

The copper tubing is made from 99.9% pure copper and meets common HVAC copper tube standards such as ASTM B280 and C12200.

Can I customize the insulation with my logo?

Yes. Dabund supports OEM and ODM customization. The insulation can be printed with your logo, brand name, size, length, meter marks and other required information.

Are you a trading company or manufacturer?

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

Can I get a free sample?

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

What payment terms are available?

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 the 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.