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DBJ-003
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DABUND
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Copper
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1M - 50M
Material
Color
Keywords
Application
100 ft 1/4 in. x 3/8 in. Mini Split Line Set
DABUND 100 ft 1/4 in. x 3/8 in. Mini Split Line Set provides pre-insulated copper refrigerant tubing for compatible ductless mini split air conditioners, heat pumps, residential HVAC systems and refrigeration applications requiring an extended piping route.
The paired refrigerant tubing combines a 1/4 in. liquid line with a 3/8 in. suction line and provides a continuous 100 ft length, approximately 30.5 m.
Manufactured from 99.9% pure C12200 copper with ASTM B280 referenced in the source product information, the tubing is factory insulated to help reduce thermal exchange, condensation and field insulation work during compatible HVAC installation.
Quick Answer: This 100 ft 1/4 x 3/8 mini split line set combines ASTM B280 copper tubing with factory-applied insulation for compatible extended-run ductless AC, heat-pump and HVAC installations.
100 ft Mini Split Line Set Video
100 ft 1/4 x 3/8 Line Set Specifications
| Product Type | Pre-Insulated Mini Split Refrigerant Line Set |
| Line Set Size | 1/4 in. x 3/8 in. |
| Liquid Line | 1/4 in. / 6.35 mm |
| Suction Line | 3/8 in. / 9.52 mm |
| Length | 100 ft / approximately 30.5 m |
| Copper Material | 99.9% Pure C12200 Copper |
| Copper Standard | ASTM B280 |
| Featured Insulation | Black Rubber |
| Other Source-Listed Insulation | Polypropylene / PE Foam are also referenced in the source technical information |
| Listed Temperature Range | -40°C to 120°C; confirm applicability to the ordered insulation configuration |
| Source-Listed Pressure Range | 2100–7000 PSI; confirm the applicable rating for the exact tube dimensions and wall thickness |
| Listed Refrigerants | R410A and R32; final compatibility must follow equipment requirements |
| Applications | Compatible Mini Split, Heat Pump, Residential HVAC and Refrigeration Systems |
1/4 in. Liquid Line and 3/8 in. Suction Line
The paired copper tubing combines a 1/4 in. liquid refrigerant line with a 3/8 in. suction return line.
Before ordering, verify that the selected mini split or heat-pump system specifically requires these exact refrigerant-line diameters.
Refrigerant piping should not be selected only by nominal BTU or tonnage because required liquid-line and suction-line dimensions can vary between HVAC manufacturers and equipment models.
100 ft Length for Extended Mini Split Installations
The 100 ft refrigerant line provides additional routing flexibility where compatible indoor and outdoor HVAC units are separated by a greater distance.
It can support compatible multi-room layouts, multi-story homes, apartments and other installations where shorter refrigerant piping does not provide sufficient reach.
Because 100 ft is an extended refrigerant piping distance, always confirm the HVAC equipment manufacturer's maximum permitted line length, maximum elevation difference and additional refrigerant charging requirements before installation.
ASTM B280 C12200 Copper Refrigerant Tubing
The source product information specifies 99.9% pure C12200 copper and references ASTM B280 refrigeration tubing.
Copper provides thermal conductivity, corrosion resistance and flexibility for routing compatible HVAC refrigerant piping.
Appropriate HVAC tube-bending methods and suitable bend radii should be used to reduce the risk of kinking, flattening or restricting refrigerant flow.
Pressure Capability and Modern Refrigerants
The source product information lists a pressure range of 2100–7000 PSI and references R410A and R32 refrigerant applications.
Actual allowable pressure depends on tube diameter, copper wall thickness, operating temperature and the exact ordered configuration. Confirm the applicable tubing specification before selecting the line set for a specific HVAC system.
Black Rubber Insulated Copper Line Set
The featured product images and wider product-family table show Black Rubber insulation around the copper refrigerant tubing.
Black Rubber insulation provides a thermal insulation layer and moisture-resistant barrier that helps reduce condensation around cold refrigerant lines.
The source product information lists a temperature range of approximately -40°C to 120°C for the insulation configuration.
Copper Line Set and Insulation Video
99.9% Pure Copper
Black Rubber Insulated Pipe
Protective Plastic Cap
Black Rubber Pipe Insulation
The insulation acts as both a thermal barrier and a moisture-resistant layer around the copper refrigerant pipe.
Its closed-cell structure helps reduce water-vapor penetration and condensation buildup during compatible HVAC operation.
Insulation Performance
UV and Weather Protection
The source product information describes applicable insulation configurations as using a UV-resistant protective outer layer for indoor and outdoor HVAC applications.
Closed-Cell Insulation Structure
The insulation structure is described as closed-cell material designed to provide thermal insulation and moisture resistance around the refrigerant tubing.
Condensation Control
Proper insulation coverage helps reduce water-vapor penetration and surface condensation on cold refrigerant lines.
Compatible HVAC Applications
Compatible ductless mini split air conditioners
Heat-pump systems
Residential HVAC projects
Multi-room HVAC installations
Compatible central and ducted HVAC systems requiring this pipe size
Compatible refrigeration systems
Final compatibility must be confirmed from the equipment manufacturer's required liquid-line size, suction-line size, refrigerant, permitted piping length and operating-pressure requirements.
Important Checks for a 100 ft Refrigerant Run
Verify Maximum Permitted Line Length
Confirm that the specific mini split or heat-pump system permits at least the required 100 ft refrigerant piping distance.
Confirm the Exact Pipe Sizes
Verify that the equipment specifically requires a 1/4 in. liquid line and 3/8 in. suction line.
Check Maximum Elevation Difference
If indoor and outdoor units are installed at different heights, confirm the maximum allowable vertical separation specified by the equipment manufacturer.
Check Additional Refrigerant Charge
A 100 ft installation may require additional refrigerant beyond the equipment's factory charge. Follow the manufacturer's charging instructions for the actual installed piping length.
Support the Extended Refrigerant Run
Use suitable HVAC-rated clips, straps or supports along the piping route to reduce sagging, vibration and mechanical stress on the copper tubing and insulation.
Installation Guidelines
Plan the Complete Route
Measure and plan the complete refrigerant piping route before cutting or installing the copper tubing.
Avoid Kinks and Sharp Bends
Use suitable tube-bending methods and appropriate bend radii to reduce the risk of copper tube deformation or restricted refrigerant flow.
Keep Pipe Ends Sealed
Keep open copper tube ends protected during storage and installation to reduce moisture and contamination entering the refrigerant system.
Protect the Insulation
Avoid crushing, cutting or leaving unnecessary gaps in the insulation, especially around bends, supports and wall penetrations.
Use Proper Connection Procedures
Follow the HVAC equipment manufacturer's approved cutting, flaring or brazing procedures and specified connection torque requirements.
Pressure Test and Evacuate Before Startup
Follow the equipment manufacturer's approved pressure-testing, evacuation, refrigerant charging and commissioning procedures before system startup.
Available Mini Split Line Set Sizes
| Size | Available Lengths | Black Rubber Insulation | Listed Flame-Resistance Options |
|---|---|---|---|
| 1/4 + 3/8 in. | 15 m / 20 m / 25 m / 30 m / 50 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
| 1/4 + 1/2 in. | 15 m / 20 m / 25 m / 30 m / 50 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
| 1/4 + 5/8 in. | 15 m / 20 m / 25 m / 30 m / 50 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
| 3/8 + 5/8 in. | 15 m / 20 m / 25 m / 30 m / 50 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
| 3/8 + 3/4 in. | 15 m / 20 m / 25 m / 30 m / 50 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
| 1/2 + 3/4 in. | 15 m / 20 m / 25 m / 30 m / 50 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
| 3/8 + 7/8 in. | 15 m / 20 m / 25 m / 30 m / 50 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
Length Note: The source technical specification rounds this SKU to 30 m, while 100 ft is approximately 30.5 m. Buyers should specify the required 100 ft finished length when ordering.
General Line Set Size and Capacity Reference
The following capacity ranges are general references from the wider DABUND product family. Final refrigerant-line sizing must follow the HVAC equipment manufacturer's exact 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 1/4 x 3/8 configuration, the wider DABUND product family lists 0.75–1.0 ton and 9,000–12,000 BTU as general references. Actual compatibility must be confirmed from the equipment manufacturer's required liquid-line and suction-line sizes.
Why Choose the DABUND 100 ft Mini Split Line Set?
ASTM B280 Copper Tubing
The source product information specifies 99.9% C12200 copper and ASTM B280 refrigeration tubing.
Black Rubber Insulation
The featured Black Rubber configuration provides factory-applied thermal and moisture protection around the copper piping.
Extended 100 ft Length
The longer coil provides routing flexibility for compatible HVAC projects requiring greater separation between indoor and outdoor equipment.
OEM and Custom Branding
The source product information lists logo printing, pipe marking and customized packaging for suitable distributor and wholesale orders.
In-House Insulation Production
DABUND states that it produces insulated copper pipe and HVAC line sets and supports multiple insulation and branding configurations.
DABUND Mini Split Line Set Factory
DABUND manufactures insulated copper pipe, mini split line sets, aluminum pipe and related HVAC parts for distributors, contractors and project customers.
Insulation Test Documentation
The source certificate section states that applicable Polypropylene or Black Rubber insulation configurations reference ASTM E84, UL94, ASTM D1056 and ASTM G21.
Buyers requiring project-specific compliance documentation should confirm the exact insulation material, thickness and corresponding test report for the ordered configuration.
International HVAC Exhibitions
DABUND participates in HVAC exhibitions where distributors and professional buyers can review mini split line sets, insulated copper tubing and related HVAC products.
Frequently Asked Questions
What is included in this 100 ft mini split line set?
The source product description explicitly identifies two pre-insulated copper refrigerant pipes: a 1/4 in. liquid line and a 3/8 in. suction line. Additional installation accessories are not specified in the supplied product content.
Is this a complete mini split installation kit?
The page title uses the term installation kit, but the supplied product information only clearly specifies the insulated copper refrigerant line set. Confirm any additional accessories included in the actual SKU before ordering.
How long is this mini split line set?
The product is 100 ft long, approximately 30.5 m. The source technical specification rounds the length to 30 m.
What does 1/4 in. x 3/8 in. mean?
It refers to the outside diameters of the two copper refrigerant tubes: 1/4 in. for the liquid line and 3/8 in. for the suction line.
What size mini split can use a 1/4 x 3/8 line set?
The wider DABUND product family lists 1/4 x 3/8 as a general reference for some 0.75–1.0 ton or 9,000–12,000 BTU systems. Final pipe sizing must follow the specific equipment manufacturer's requirements.
Can every 9,000–12,000 BTU mini split use a 100 ft line set?
No. Capacity alone does not determine compatibility. Confirm the maximum permitted piping length, maximum elevation difference, exact pipe sizes and refrigerant charging requirements for the specific HVAC model.
Does a 100 ft line set require additional refrigerant?
Additional refrigerant may be required depending on the HVAC equipment, factory refrigerant charge and total installed line length. Follow the manufacturer's charging instructions.
What copper material is used?
The source product information specifies 99.9% pure C12200 copper and ASTM B280 refrigeration tubing.
What insulation is shown on this product?
The product images, insulation description and wider product-family table prominently show Black Rubber insulation. Another technical section also references Polypropylene / PE Foam options, so buyers should confirm the exact material for the ordered SKU.
What Black Rubber insulation thicknesses are available?
The wider product-family table lists 8 mm, 9 mm, 10 mm, 13 mm, 19 mm and 25.4 mm insulation thicknesses.
Is the line set compatible with R410A and R32?
R410A and R32 are listed in the source product information. Final compatibility must be confirmed against the equipment manufacturer's refrigerant, tubing and pressure requirements.
What is the pressure rating?
The source page lists a pressure range of 2100–7000 PSI. Because allowable pressure depends on tube diameter, wall thickness, temperature and configuration, confirm the applicable rating for the exact tubing ordered.
Is this line set suitable for outdoor installation?
The source product information describes applicable insulation configurations as UV resistant. Final outdoor suitability should be confirmed for the exact ordered insulation material and exposure conditions.
Can the copper line set be shortened?
The copper tubing can be cut to suit the project when appropriate HVAC cutting, deburring, flaring or brazing procedures are used according to the equipment design.
Is DABUND a manufacturer?
Yes. The source product information identifies DABUND as a manufacturer of insulated copper pipe, HVAC line sets and related HVAC products.
Can I request free samples?
The listed sample policy provides up to three free samples for qualified requests, with the buyer responsible for express freight. View Sample Information
What payment terms are available?
Listed payment options include T/T, L/C at sight and credit card.
What delivery terms are available?
Listed delivery terms include EXW, FOB, CFR and CIF.
Does DABUND support OEM and ODM?
Yes. The source product information lists OEM and ODM services including logo printing, pipe marking and customized packaging.
What is the typical delivery time?
The listed typical delivery time is approximately 15–20 days, depending on order quantity and production requirements.
