20 ft 3/8" x 3/4" Split System Air Conditioner Installation Kit

20 Ft 3/8" x 3/4" Split AC Installation Kit

The DABUND 20 ft 3/8" x 3/4" Split System Air Conditioner Installation Kit is a complete HVAC installation package for compatible split AC systems, ductless mini splits, heat pumps and other HVACR applications. The kit combines a pre-insulated copper refrigerant line set with communication cable, drain hose, wall sleeve, wall cover and related installation accessories.

The paired refrigerant tubing includes a 3/8" copper tube and a 3/4" copper tube, each approximately 20 ft or 6.10 m long. Copper tube ends can be supplied pre-flared with flare nuts to simplify connection during compatible HVAC installations.

DABUND uses C12200 DHP copper tubing for air-conditioning and refrigeration applications, with ASTM B280 specifications available according to the selected product configuration. White PE and black rubber insulation options are available in multiple thicknesses for HVAC distributors, wholesalers, contractors and private-label brands.

Quick Answer: This 20 ft split AC installation kit combines a 3/8" x 3/4" insulated copper line set with major installation accessories in one package, helping professional HVAC buyers simplify sourcing, inventory management and jobsite preparation.

Compatibility Notice: Refrigerant pipe size must match the specific HVAC equipment. Before ordering, verify that the indoor and outdoor units require 3/8" and 3/4" refrigerant tubing and confirm the permitted line length, insulation, flare connection and refrigerant charging requirements in the equipment manufacturer's installation manual.

What Is Included in the 20 Ft AC Installation Kit?

The standard split system air conditioner installation kit combines the refrigerant piping and commonly required installation accessories into one coordinated package.

• 20 ft / approximately 6.10 m insulated copper line set

• 3/8" copper refrigerant tube

• 3/4" copper refrigerant tube

• Pre-flared copper tube ends with flare nuts

• Communication / control wire cable

• Drain hose

• Wall sleeve and wall cover

• Related HVAC installation accessories

Kit configuration can be customized according to customer requirements. Options include communication cable specification, drain hose length, insulation material, insulation thickness, accessory combinations, printed branding and packaging.

20 Ft 3/8" x 3/4" Line Set Specifications

Key Features of the 3/8" x 3/4" AC Installation Kit

C12200 Copper Tubing for HVACR Applications

The refrigerant line is manufactured from C12200 DHP copper for air-conditioning and refrigeration applications. ASTM B280 copper tubing specifications are available according to the selected product requirements.

3/8" x 3/4" Paired Refrigerant Line

The installation kit combines 3/8" and 3/4" outside-diameter copper tubes. On compatible HVAC equipment, the smaller tube commonly functions as the liquid line and the larger tube as the suction or gas line. The actual piping configuration must follow the equipment manufacturer's specifications.

Factory-Prepared Flared Connections

Copper tube ends can be supplied with factory-prepared flares and flare nuts. Pre-flared connections help reduce field preparation and provide an efficient connection solution for compatible split AC systems.

White PE and Black Rubber Insulation

DABUND offers both white PE and black rubber insulation. Multiple thickness options allow HVAC buyers to select an insulation configuration according to climate, installation conditions, local market requirements and equipment specifications.

Complete Split AC Installation Package

Instead of purchasing refrigerant tubing, communication cable, drain hose and wall accessories separately, buyers can source these components together as one coordinated split system air conditioner installation kit.

OEM Supply for HVAC Distributors

DABUND supports OEM and ODM orders for wholesalers, distributors and HVAC brands. Copper tube combinations, lengths, insulation specifications, cable configurations, accessories, printed logos and packaging can be customized.

High-Purity Copper Tubing

Black Rubber Insulated Pipe

Pre-Flared Copper Ends

Black Rubber Pipe Insulation Performance

Closed-cell insulation helps reduce thermal transfer between the refrigerant piping and the surrounding environment while limiting moisture penetration and condensation on cold refrigerant lines.

• Closed-cell structure helps reduce moisture penetration.

• Low thermal conductivity helps limit heat transfer.

• Insulation helps control condensation on refrigerant tubing.

• UV-resistant insulation options are available for exposed applications.

• Multiple insulation thicknesses are available for different markets and projects.

• Selected black rubber specifications support temperatures from approximately -40°C to 120°C.

Thermal Insulation

The high-density closed-cell structure helps reduce heat transfer between the refrigerant tubing and ambient air, supporting stable refrigerant conditions when the HVAC system is correctly designed and installed.

Moisture and Condensation Control

Closed-cell insulation also functions as a moisture-resistant layer. Proper insulation thickness and installation help reduce condensation on cold suction piping and protect nearby building surfaces.

Flame-Retardant and UV-Resistant Options

DABUND offers insulation specifications with testing related to ASTM E84, UL 94, ASTM D1056 and ASTM G21. Buyers should confirm the exact insulation grade, test report and regulatory requirements for their destination market before ordering.

20 Ft Split AC Installation Kit for HVAC Wholesalers

The 20 ft 3/8" x 3/4" Split System Air Conditioner Installation Kit is designed for B2B buyers including HVAC wholesalers, distributors, importers, contractors, project suppliers and private-label air-conditioning brands.

The 20 ft configuration provides approximately 6.10 m of refrigerant piping, making it suitable for compatible installations that require more routing distance than a short 10 ft line set while avoiding unnecessary excess piping where longer 35 ft or 50 ft line sets are not required.

Actual line length must always comply with the HVAC equipment manufacturer's minimum and maximum piping requirements. Additional refrigerant charge may also be required when the line length exceeds the factory-precharged allowance specified by the equipment manufacturer.

For volume orders, DABUND can customize tube size, line length, insulation, cable specification, drain hose, wall accessories, printed branding and export packaging.

Available Split System AC Installation Kit Sizes

DABUND supplies multiple copper line combinations, kit lengths and insulation thicknesses for different HVAC equipment and international market requirements.

Is a 3/8" x 3/4" Line Set Compatible With My AC?

A 3/8" x 3/4" copper line set is commonly specified for certain medium-to-large split air-conditioning and HVAC systems. However, line set dimensions should not be selected solely according to BTU capacity or nominal tonnage.

Before purchasing this installation kit, verify that the HVAC equipment specifically requires 3/8" and 3/4" outside-diameter refrigerant tubing. These dimensions correspond to approximately 9.52 mm and 19.05 mm.

Some industry reference charts associate 3/8" x 3/4" line sets with approximately 54,000 to 72,000 BTU systems, but this is only a general reference. Different equipment manufacturers can specify different pipe sizes for systems with similar capacities. Always follow the installation manual for the exact indoor and outdoor unit combination.

Also confirm the permitted piping length, vertical separation, flare dimensions, insulation thickness, refrigerant type and additional refrigerant charge before installation.

Refrigerant piping, pressure testing, evacuation, electrical connections and refrigerant charging should be performed by qualified HVAC personnel in accordance with local regulations and the equipment manufacturer's instructions.

OEM Split System AC Installation Kit Manufacturer

DABUND has manufactured insulated copper tubing, mini split line sets and HVAC installation accessories since 2008. The company supplies complete installation-kit solutions for overseas HVAC wholesalers, distributors, importers, contractors and private-label brands.

OEM and ODM customization options include:

• Customized copper line combinations

• Customized line set lengths

• White PE or black rubber insulation

• Customized insulation thickness

• Brand and specification printing

• Customized communication cable

• Customized drain hose

• Wall sleeve and wall cover options

• Private-label cartons and packaging

• Bulk supply for HVAC distributors and brands

Why Choose DABUND HVAC Installation Kits?

DABUND specializes in insulated copper pipes, mini split line sets and HVAC installation accessories. Integrated production allows B2B buyers to source refrigerant tubing, insulation and related installation components from one supplier.

• HVAC product manufacturing experience since 2008

• C12200 DHP copper tubing for HVACR applications

• ASTM B280 copper tube specifications available

• White PE and black rubber insulation options

• Multiple insulation thicknesses

• Complete split AC installation kit configurations

• OEM and ODM customization

• Sample support for product evaluation

• Bulk supply for wholesalers and distributors

DABUND Factory

DABUND produces insulated copper pipes, mini split line sets, aluminum pipes and HVAC installation accessories 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. Buyers should confirm the exact insulation grade, test report and regulatory requirements for their destination market before ordering.

International HVAC Exhibitions

DABUND participates in international exhibitions to present split AC installation kits, insulated copper line sets and HVAC accessories to distributors, contractors, importers and industry buyers.

Frequently Asked Questions

What is included in the 20 ft 3/8" x 3/4" AC installation kit?

The standard kit includes a 20 ft insulated 3/8" + 3/4" copper line set, communication cable, drain hose, wall sleeve, wall cover and related HVAC installation accessories. Exact kit contents can be customized.

What does 3/8" x 3/4" mean on an HVAC line set?

The dimensions refer to the outside diameters of the two copper refrigerant tubes. They correspond to approximately 9.52 mm and 19.05 mm.

How long is this split AC line set?

The copper refrigerant line set is approximately 20 ft, or 6.10 m, long.

What AC capacity commonly uses a 3/8" x 3/4" line set?

A 3/8" x 3/4" line set is commonly referenced for some larger split AC systems, including certain 54,000 to 72,000 BTU applications. However, capacity alone cannot determine the correct pipe size. Always verify the required refrigerant line dimensions in the equipment manufacturer's installation manual.

Are the copper pipe ends pre-flared?

Yes. The copper tube ends can be supplied pre-flared with flare nuts to simplify connection to compatible HVAC equipment.

What copper material is used?

DABUND uses C12200 DHP copper tubing for HVAC and refrigeration applications, with ASTM B280 specifications available according to the ordered product configuration.

What insulation options are available?

White PE and black rubber insulation are available in multiple thicknesses. Buyers can select insulation according to application conditions, climate and target-market requirements.

Can DABUND customize the installation kit?

Yes. OEM and ODM options include customized copper line sizes, lengths, insulation, communication cable, drain hose, wall accessories, product printing and packaging.

Can my logo be printed on the product or packaging?

Yes. Logo printing, specification printing and private-label packaging are available for OEM and volume orders.

Can I get samples before placing a bulk order?

Yes. DABUND provides sample support for product evaluation. You can visit the free sample page for more information.

What payment terms are available?

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

What delivery terms are available?

Available international trade terms can include EXW, FOB, CFR and CIF. Buyers can confirm the preferred Incoterm when requesting a quotation.

What is the typical production lead time?

Standard production lead time is typically around 15–20 days according to the current product information. Actual lead time depends on order quantity, customization requirements, material availability and production schedule.