100 ft 1/4" x 5/8" HVAC Line Set Manufacturer | Insulated Copper Line Set Supplier

100 Ft 1/4" x 5/8" Pre-Insulated HVAC Line Set

DABUND 100 ft 1/4" x 5/8" HVAC line set is a long-length pre-insulated copper refrigerant line designed for compatible mini split air conditioners, heat pumps, split systems and HVACR projects. It provides a continuous copper piping solution for installations where indoor and outdoor equipment are separated by a substantial distance.

The paired tubing includes a 1/4" liquid line and a 5/8" suction line, equivalent to approximately 6.35 mm and 15.88 mm outside diameter. The total coil length is 100 ft, approximately 30.48 m.

The copper tubing is manufactured from C12200 copper for air-conditioning and refrigeration applications, with ASTM B280 specifications available according to the ordered configuration. Factory-applied insulation helps reduce installation work, thermal transfer and surface condensation.

Quick Answer: This product is a 100 ft / 30.48 m pre-insulated HVAC refrigerant line set combining a 1/4" liquid line and 5/8" suction line for compatible HVAC equipment that specifies these exact pipe dimensions.

Important Compatibility Notice: A 100 ft refrigerant run is not suitable for every HVAC system. Before ordering or installation, verify the required liquid and suction line diameters, maximum actual and equivalent piping length, vertical separation, insulation requirements and additional refrigerant charge in the equipment manufacturer's installation manual.

100 Ft 1/4" x 5/8" HVAC Line Set Specifications

Key Features of the 1/4" x 5/8" Insulated Copper Line Set

C12200 Copper for HVAC Refrigerant Piping

C12200 copper tubing provides the formability, thermal conductivity and corrosion resistance required for professional air-conditioning and refrigeration piping applications.

ASTM B280 Specification Available

ASTM B280 copper tubing specifications are available according to the ordered configuration. Distributors and project buyers can confirm tube dimensions, wall thickness and other technical requirements before bulk production.

1/4" Liquid Line and 5/8" Suction Line

On compatible HVAC systems, the smaller 1/4" tube commonly serves as the liquid line while the larger 5/8" tube serves as the suction or gas line. The equipment manufacturer's piping specification always takes priority.

100 Ft Continuous Refrigerant Piping

The 100 ft / 30.48 m continuous coil is designed for projects requiring substantially more routing distance than standard 25 ft, 50 ft or 75 ft line sets. Where permitted by the equipment manufacturer, continuous tubing can reduce the need for intermediate refrigerant-line joints.

Factory-Applied Thermal Insulation

Factory-applied insulation helps provide consistent coverage around the refrigerant tubing and reduces field insulation work. The closed-cell structure helps limit heat transfer and surface condensation when the appropriate insulation specification is selected.

OEM Insulation Printing

DABUND supports customized printing on insulation for distributors and private-label HVAC brands. Company name, pipe dimensions, coil length and other product information can be added according to order requirements.

Copper Refrigerant Tubing

Black Rubber Insulation

Protective Plastic Caps

Black Rubber Pipe Insulation Performance

Closed-cell insulation helps reduce thermal transfer and moisture penetration around refrigerant piping. Proper insulation is especially important on a 100 ft line because a longer piping route creates a larger insulated surface area exposed to ambient conditions.

Condensation Control

Suitable closed-cell insulation helps reduce surface condensation on cold refrigerant lines. Insulation joints should be properly sealed throughout the installation to maintain moisture control.

Thermal Protection

The insulation layer helps reduce unwanted heat transfer between the refrigerant piping and surrounding environment. The correct insulation thickness should be selected according to climate, application and project specification.

UV-Resistant Options

UV-resistant insulation configurations are available for refrigerant lines that include outdoor sections. Additional line-set covers or mechanical protection may be required depending on the installation environment.

Why Choose a 100 Ft HVAC Line Set?

A 100 ft line set is intended for HVAC projects where the indoor and outdoor equipment cannot be connected with standard short refrigerant piping. It can be useful in multi-story buildings, rooftop equipment installations, commercial properties and projects with long horizontal or vertical routing paths.

Compared with connecting multiple shorter copper sections, one continuous 100 ft coil may reduce intermediate joints when the HVAC system permits the required piping length.

The 100 ft length should not be interpreted as universal compatibility. Long refrigerant piping has additional engineering considerations, and the HVAC equipment manufacturer's limits must be checked before installation.

Important Requirements for a 100 Ft Refrigerant Run

Check Maximum Actual Line Length

Verify that the HVAC unit permits approximately 100 ft / 30.48 m of actual refrigerant piping. Some systems have significantly shorter maximum piping limits.

Check Equivalent Piping Length

Bends and other piping conditions can increase equivalent length even when the physical copper tube is less than 100 ft. Follow the equipment manufacturer's method for calculating allowable equivalent piping length.

Confirm Maximum Vertical Separation

If the indoor and outdoor units are installed at different elevations, verify the maximum permitted vertical separation. This is particularly important for multi-story and rooftop installations.

Confirm Additional Refrigerant Charge

Many HVAC systems include a factory refrigerant charge for a specified standard piping length. A long run may require additional refrigerant according to the manufacturer's charging rate and procedure.

Check Long-Line Installation Requirements

Some HVAC manufacturers specify additional requirements for extended piping applications. These may depend on refrigerant type, equipment design, vertical lift and total equivalent length. Follow the installation documentation for the exact indoor and outdoor unit combination.

Protect the Insulation at Penetrations

Use suitable sleeves, grommets or protective materials where refrigerant tubing passes through walls, floors or structural openings. This helps reduce abrasion and damage to the insulation.

Support Long Horizontal and Vertical Runs

Long refrigerant lines should be properly supported according to professional HVAC installation practices to reduce sagging, vibration and mechanical stress on the copper tubing and insulation.

Applications of the 100 Ft HVAC Copper Line Set

• Compatible ductless mini split systems

• Compatible heat pump systems

• Split air-conditioning equipment

• Residential HVAC installations

• Light-commercial HVAC projects

• Long-distance indoor-to-outdoor refrigerant piping

• Multi-story and rooftop equipment installations

Application depends on the exact HVAC manufacturer's pipe-size and line-length requirements. Do not select refrigerant tubing solely according to nominal system capacity.

Is a 1/4" x 5/8" Line Set Compatible With My HVAC System?

A 1/4" x 5/8" line set is used by certain mini split, heat pump and split-system HVAC models. However, the correct pipe size cannot be selected solely from tonnage or BTU capacity.

Some equipment in approximately 24,000 to 30,000 BTU capacity ranges may specify 1/4" liquid tubing with a 5/8" suction line, but other equipment with similar nominal capacity may use different pipe dimensions.

Before purchasing this line set, confirm that the equipment manufacturer specifically requires 1/4" and 5/8" outside-diameter tubing.

Available HVAC Line Set Sizes

DABUND supplies multiple paired copper tube sizes, insulation thicknesses and coil lengths for HVAC and refrigeration applications.

HVAC Line Sets for Distributors and Project Buyers

The 100 ft 1/4" x 5/8" HVAC line set is available for HVAC importers, wholesalers, distributors, contractors, installers, engineering companies and project suppliers requiring long-length refrigerant tubing.

Longer coils can be useful for distributors serving commercial, multi-story and project-based HVAC installations where standard short line sets may not provide sufficient routing distance.

OEM and Custom HVAC Line Set Supply

DABUND supports OEM and ODM cooperation for HVAC brands, importers and distributors. Custom options can include coil length, insulation thickness, printed identification and private-label packaging.

• Custom copper tube combinations

• Custom coil lengths

• Multiple insulation thickness options

• Logo and specification printing on insulation

• Private-label packaging

• Carton or pallet packing according to order requirements

• Bulk production for wholesale and project supply

Why HVAC Distributors Choose DABUND

Factory Supply for Bulk Orders

DABUND supplies HVAC copper line sets for wholesale, distribution and project applications with multiple tube-size and insulation configurations available.

OEM and Private-Label Support

Insulation printing, product identification and private-label packaging can be customized according to distributor and HVAC brand requirements.

Export Packaging Options

Coil packaging, cartons and pallet configurations are available according to product specification, order quantity and shipping requirements.

Production Lead Time

Production lead time depends on order quantity and customization. Current product information lists approximately 7–20 days for production, while customized orders should be confirmed before purchase.

Quality and Insulation Testing

The current product information lists pressure testing and insulation specifications associated with ASTM E84, UL 94 and other insulation tests. Buyers should confirm the exact tube specification, insulation grade and applicable test documentation for the ordered product and destination market.

For projects with specific regulatory or certification requirements, request the corresponding test report and confirm that it applies to the exact material configuration being ordered.

DABUND Factory

DABUND manufactures insulated copper tubing, mini split line sets, aluminum pipes and other HVAC components for international B2B customers.

SGS Testing and Insulation Standards

Available insulation specifications include testing related to ASTM E84, UL 94, ASTM D1056 and ASTM G21 according to the product information. Confirm the exact applicable test reports for the ordered insulation configuration.

International HVAC Trade Shows

DABUND participates in international trade shows to present insulated copper tubing, HVAC line sets and related products to distributors, importers, contractors and other industry buyers.

Request a Quote for 100 Ft HVAC Line Sets

For wholesale or project quotations, provide the required copper tube size, coil length, insulation type and thickness, quantity, destination market and any OEM packaging or printing requirements.

Request a Quote

Frequently Asked Questions

What does 1/4" x 5/8" mean on an HVAC line set?

It refers to the outside diameters of the paired refrigerant tubes. The 1/4" tube is approximately 6.35 mm OD and the 5/8" tube approximately 15.88 mm OD.

Which tube is the liquid line and which is the suction line?

On compatible equipment, the 1/4" tube commonly serves as the liquid line and the 5/8" tube as the suction or gas line. Always verify the manufacturer's piping diagram for the exact HVAC model.

How long is a 100 ft HVAC line set in meters?

100 ft is approximately 30.48 meters.

Can every mini split use a 100 ft refrigerant line?

No. Maximum refrigerant piping length varies significantly by manufacturer and model. Verify the maximum actual and equivalent line length before selecting a 100 ft line set.

Does a 100 ft line set require additional refrigerant?

It may. Many HVAC systems include a factory refrigerant charge for a specified standard line length and require additional refrigerant beyond that distance. Use the charging rate specified by the equipment manufacturer.

Does a 100 ft line require special long-line installation procedures?

Some HVAC equipment has specific requirements for extended piping runs. These requirements depend on the unit design, refrigerant, vertical separation and total equivalent piping length. Follow the installation manual for the exact equipment.

Is a 1/4" x 5/8" line set suitable for every 24K or 30K system?

No. Some HVAC systems in these capacity ranges use 1/4" x 5/8" tubing, but pipe dimensions vary by manufacturer and model. Confirm the required line sizes in the equipment documentation.

What copper material is used?

The product information specifies C12200 copper for HVAC and refrigeration applications, with ASTM B280 specifications available according to the ordered configuration.

Is the copper tubing pre-insulated?

Yes. The product is supplied with factory-applied insulation. Different insulation materials and thicknesses can be supplied depending on the required configuration.

Is UV-resistant insulation available?

Yes. UV-resistant insulation options are available for applications that include outdoor refrigerant-line sections. Confirm the required insulation grade when ordering.

Can DABUND customize the line set length?

Yes. DABUND supports multiple standard and customized coil lengths for wholesale, project and OEM orders.

Can my company name be printed on the insulation?

Yes. OEM insulation printing can include company name, copper tube dimensions, coil length and other product identification.

Do you provide private-label packaging?

Yes. Private-label cartons and other packaging configurations can be discussed for distributor and OEM orders.

Can I get samples before a bulk order?

Yes. Sample support is available for product evaluation. Express shipping arrangements and the exact sample configuration should be confirmed before dispatch.

What payment terms are available?

Available payment methods can include T/T, L/C at sight and credit card. Final terms depend on the commercial agreement.

What delivery terms are available?

Available trade terms can include EXW, FOB, CFR and CIF. Confirm the required Incoterm when requesting a quotation.

What is the production lead time?

Current product information lists approximately 7–20 days depending on the order. Actual lead time should be confirmed according to quantity, insulation configuration, OEM requirements and production schedule.

Who should install a 100 ft HVAC refrigerant line?

Refrigerant piping, pressure testing, evacuation, connection and refrigerant charging should be completed by qualified HVAC personnel according to local requirements and the equipment manufacturer's instructions.