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DBJ-003
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DABUND
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Copper
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1M - 10M
Material
Color
Keywords
Application
25 ft 3/8 in. x 3/4 in. Mini Split Installation Kit
DABUND 25 ft 3/8 in. x 3/4 in. Mini Split Air Conditioner Installation Kit combines a pre-insulated copper refrigerant line set with essential accessories for compatible mini split, ductless AC and heat-pump installations.
The kit includes a 3/8 in. liquid line and 3/4 in. suction line with factory-applied insulation, together with communication wire, condensate drain hose, wall pipe sleeve, wall cover and flare fittings.
The refrigerant line set is 25 ft long, approximately 7.62 m, and is manufactured from 99.9% pure copper. The featured configuration uses Black Rubber insulation for compatible indoor and outdoor HVAC refrigerant-line applications.
Quick Answer: This 25 ft 3/8 x 3/4 mini split installation kit provides a Black Rubber insulated copper line set plus communication wire, drain hose, wall-entry components and flare fittings in one package.
25 ft Mini Split Installation Kit Specifications
| Product Type | Complete Mini Split Air Conditioner Installation Kit |
| Line Set Size | 3/8 in. x 3/4 in. |
| Liquid Line | 3/8 in. |
| Suction Line | 3/4 in. |
| Length | 25 ft / 7.62 m |
| Copper Material | 99.9% Pure Copper |
| Insulation | Factory-Applied, UV-Resistant |
| Featured Insulation Material | Black Rubber |
| Listed Insulation Temperature Range | -40°C to 120°C |
| Included Accessories | Communication wire, drain hose, wall pipe & cover, flare fittings |
| Applications | Compatible mini split, ductless AC and heat-pump systems |
| Listed Refrigerants | R410A, R32 and similar compatible HVAC refrigerants |
Mini Split Installation Kit Video
What Is Included in the Installation Kit?
| Component | Description |
|---|---|
| Copper Line Set | 25 ft 3/8 in. liquid line + 3/4 in. suction line |
| Black Rubber Insulation | Factory-applied insulation around the refrigerant tubing |
| Communication Wire | For compatible indoor-to-outdoor unit signal connection |
| Condensate Drain Hose | For condensate drainage from compatible indoor units |
| Wall Pipe Sleeve | Protects the line set at the wall penetration |
| Wall Cover | Provides a clean and protected wall-entry finish |
| Flare Fittings | For compatible refrigerant-line connections |
99.9% Pure Copper Refrigerant Tubing
The refrigerant line set is manufactured from 99.9% pure copper for compatible HVAC refrigerant piping applications.
The product combines a 3/8 in. liquid line with a 3/4 in. suction line. Both dimensions should be checked against the HVAC equipment manufacturer's required piping specification before installation.
Copper tubing provides the flexibility required for routing between compatible indoor evaporator and outdoor condenser equipment.
Black Rubber Pipe Insulation
The featured line set uses Black Rubber insulation around the copper refrigerant tubing.
The product information lists the Black Rubber insulation for a temperature range from -40°C to 120°C and describes it as both an insulation layer and moisture-resistant layer.
Factory-applied insulation helps reduce thermal exchange and surface condensation while reducing additional insulation work during installation.
Copper Line Set and Insulation Video
99.9% Pure Copper
Black Rubber Insulated Pipe
Flaring
Black Rubber Insulation Details
Black Rubber insulation is used as both a thermal insulation layer and moisture-resistant layer around the copper refrigerant tubing.
The listed operating temperature range for this insulation configuration is -40°C to 120°C.
Complete 25 ft Mini Split Installation Package
Combining the insulated copper line set, communication wire, drain hose, wall-entry components and flare fittings in one package reduces the number of separate components that need to be sourced for a compatible installation.
The 25 ft line-set length is suitable for installations where the measured route between compatible indoor and outdoor units can be completed within the equipment manufacturer's permitted piping length.
Available Mini Split Installation Kit Sizes
The following table shows standard size, production-length and Black Rubber insulation options listed for the wider DABUND product family. The current product on this page is the 25 ft / 7.62 m 3/8 x 3/4 configuration.
| Line Set Size | Listed Standard Lengths | Black Rubber Insulation | Listed Flame-Resistance Options |
|---|---|---|---|
| 1/4 + 3/8 in. | 3 m / 4 m / 5 m / 7 m / 10 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
| 1/4 + 1/2 in. | 3 m / 4 m / 5 m / 7 m / 10 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
| 1/4 + 5/8 in. | 3 m / 4 m / 5 m / 7 m / 10 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
| 3/8 + 5/8 in. | 3 m / 4 m / 5 m / 7 m / 10 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
| 3/8 + 3/4 in. | 3 m / 4 m / 5 m / 7 m / 10 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
| 1/2 + 3/4 in. | 3 m / 4 m / 5 m / 7 m / 10 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
| 3/8 + 7/8 in. | 3 m / 4 m / 5 m / 7 m / 10 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
General Line Set Size and Capacity Reference
The following capacity ranges are general references listed for the wider DABUND line-set family. Final refrigerant-line sizing must follow the specific HVAC equipment manufacturer's requirements.
| Line Set Size | General Ton Reference | General BTU Reference |
|---|---|---|
| 1/4 + 3/8 in. | 0.75–1.0 Ton | 9,000 / 12,000 BTU |
| 1/4 + 1/2 in. | 1.5–2.0 Ton | 12,000 / 18,000 BTU |
| 1/4 + 5/8 in. | 2.0–2.5 Ton | 24,000 / 30,000 BTU |
| 3/8 + 5/8 in. | 3.0–4.0 Ton | 36,000 / 48,000 BTU |
| 3/8 + 3/4 in. | 4.5–6.0 Ton | 54,000 / 72,000 BTU |
| 3/8 + 7/8 in. | 6.0–8.0 Ton | 72,000–96,000 BTU |
For the 3/8 x 3/4 configuration, the product family lists 4.5–6.0 ton and 54,000–72,000 BTU as general references. Always use the equipment manufacturer's required liquid-line and suction-line dimensions for final selection.
Compatible HVAC Applications
Compatible mini split air conditioners
Ductless air-conditioning systems
Ductless heat-pump systems
Residential HVAC installations
Apartment and office HVAC projects
Compatible light commercial installations
Refrigerant Compatibility
The product information lists R410A and R32 among the common refrigerants used with compatible mini split and ductless HVAC systems.
Final refrigerant compatibility, required copper tube sizes, permitted piping length and applicable system requirements should be verified against the HVAC equipment manufacturer's specifications.
How to Select the Correct Mini Split Installation Kit
Confirm the Required Refrigerant Line Sizes
Verify that the HVAC equipment requires a 3/8 in. liquid line and 3/4 in. suction line. Both dimensions must match the manufacturer's requirements.
Confirm the Required Line Length
Measure the complete route between the indoor and outdoor units and confirm that the 25 ft line-set length is suitable.
Verify the Maximum Permitted Piping Length
Check the equipment manufacturer's permitted refrigerant piping length and elevation requirements before installation.
Confirm Communication Wire Requirements
Verify that the included communication wiring is suitable for the indoor and outdoor equipment being connected.
Confirm Drainage Requirements
Check the condensate drain requirements of the indoor unit and route the included drain hose according to the equipment installation instructions.
Installation Considerations
Plan the Line Routing Before Installation
Measure and plan the complete piping path between the indoor and outdoor units before installation. Avoid unnecessary sharp bends or tight turns that could damage the copper tubing or insulation.
Protect the Insulation at Wall Penetrations
Use the included wall pipe sleeve and cover where the line set passes through the wall to help protect the insulation from abrasion.
Support the Refrigerant Tubing
Use suitable clips, straps or HVAC brackets along the refrigerant-line route to reduce sagging, vibration and stress on the insulation.
Follow the Equipment Manufacturer's Instructions
Refrigerant piping, flare connections, condensate drainage, electrical connection, evacuation, charging and commissioning should follow the HVAC equipment manufacturer's installation requirements.
Why Choose This Mini Split Air Conditioner Kit?
Complete Installation Package
The kit combines the insulated copper line set and essential installation accessories in one package, reducing the need to source each component separately.
99.9% Pure Copper Tubing
The refrigerant tubing is manufactured from 99.9% pure copper for compatible HVAC refrigerant piping applications.
Black Rubber Insulation
The featured Black Rubber insulation provides factory-applied thermal and moisture protection around the refrigerant tubing.
Suitable for Residential and Light Commercial Projects
The product is intended for compatible residential and light commercial mini split, ductless AC and heat-pump installations.
DABUND Mini Split Line Set Factory
DABUND manufactures insulated copper pipe, mini split line sets, installation kits, aluminum pipe and related HVAC installation products.
Insulation Test Documentation
The source product information references insulation test standards including ASTM E84, UL94, ASTM D1056 and ASTM G21 for applicable insulation configurations.
Buyers requiring specific certification should confirm the selected insulation material, thickness and corresponding test documentation before ordering.
International HVAC Exhibitions
DABUND participates in international HVAC exhibitions where distributors and professional buyers can review mini split installation kits, insulated copper tubing and related HVAC products.
Frequently Asked Questions
What is included in the 25 ft mini split installation kit?
The kit includes a 25 ft 3/8 in. x 3/4 in. insulated copper line set, communication wire, condensate drain hose, wall pipe sleeve, wall cover and flare fittings.
What does 3/8 in. x 3/4 in. mean?
It refers to the listed outside diameters of the two refrigerant tubes: 3/8 in. for the liquid line and 3/4 in. for the suction line.
How long is the refrigerant line set?
The line set is 25 ft long, equivalent to approximately 7.62 m.
What material is the copper tubing?
The product information lists 99.9% pure copper tubing.
What insulation material is used?
The featured product configuration uses Black Rubber insulation around the copper refrigerant tubing.
What is the listed temperature range of the Black Rubber insulation?
The source product information lists a temperature range of -40°C to 120°C for the Black Rubber insulation.
Does the kit include communication wire?
Yes. Communication wiring is included for compatible indoor-to-outdoor unit connections.
Does the kit include a condensate drain hose?
Yes. A condensate drain hose is included in the listed accessory package.
Are wall-entry accessories included?
Yes. A wall pipe sleeve and cover are included to protect the line set where it passes through a wall.
What size system can use a 3/8 x 3/4 line set?
The DABUND product family lists 3/8 in. x 3/4 in. as a general reference for some 4.5–6.0 ton or 54,000–72,000 BTU systems. Final refrigerant-line sizing must follow the equipment manufacturer's specifications.
Is this kit compatible with every mini split system?
No universal compatibility should be assumed. Check the required liquid-line size, suction-line size, piping length, connection requirements and communication wiring for the specific HVAC system.
Is this kit listed for R410A and R32 refrigerants?
The source product information lists R410A and R32 among the compatible refrigerants. Final suitability should be verified against the HVAC equipment manufacturer's requirements.
Can the insulated line set be used outdoors?
The product information lists UV-resistant insulation for compatible outdoor refrigerant-line installations.
Is additional field insulation required?
Factory-applied insulation reduces the need for additional field wrapping, although specific project conditions and installation requirements may require additional protection.
What other line set sizes are available?
Listed combinations include 1/4 + 3/8, 1/4 + 1/2, 1/4 + 5/8, 3/8 + 5/8, 3/8 + 3/4, 1/2 + 3/4 and 3/8 + 7/8 in.
Can DABUND provide free samples?
Yes. The listed policy provides up to three free samples for qualified requests, with the buyer paying the express freight. View Sample Information
What payment terms are available?
Available payment methods include T/T, L/C at sight and credit card.
What delivery terms are available?
Available delivery terms include EXW, FOB, CFR and CIF.
Does DABUND support OEM and ODM?
Yes. OEM and ODM services, including logo customization, are available for suitable orders.
What is the typical delivery time?
The listed typical delivery time is approximately 15–20 days, depending on order quantity and production requirements.
