25 ft 1/4" x 3/8" Mini Split Installation Kit

Premium quality 25-foot mini split installation kit with pre-insulated copper refrigerant lines and complete accessories. Designed for HVAC professionals, contractors, and DIY installers in the US and global markets.

The Mini Split Installation Kit is twin already. So buy it now.

Complete HVAC Mini Split Installation Kit

This all-in-one installation kit includes all essential components needed to install a ductless mini split air conditioner quickly and reliably:

• Pre-insulated copper refrigerant lines – 1/4″ liquid and 3/8″ suction

• Pre-flared ends with nuts for easy, leak-free connections

• Communication wire cable

• Drain hose

• Wall sleeve pipe & decorative wall cover

• Installation accessories included

This kit simplifies the mini split setup process and ensures a professional-grade installation every time.

Technical Specifications – Engineered for HVAC Performance

Copper Line Set Details

• Length: 25 ft (7.62 m) – ideal for short to mid-run installations

• Liquid Line Diameter: 1/4″

• Suction Line Diameter: 3/8″

• Material: 99.9% pure copper tubing

• Pre-flared ends with matching flare nuts for secure installation

The premium copper tubing provides excellent thermal conductivity and corrosion resistance for long-lasting performance.

Insulation Features

• High-density pre-applied insulation

• UV and moisture-resistant outer jacket

• Helps reduce heat loss, condensation, and energy waste

• Smooth surface for easy routing and secure clamp installation

Proper insulation enhances cooling efficiency and protects the line set in various environmental conditions.

Key Benefits of This Mini Split Installation Kit

Ideal for Ductless HVAC Systems

This line set kit is perfectly suited for residential and commercial mini split air conditioners, heat pumps, and ductless climate systems.

Time-Saving & Easy to Install

Pre-flared connectors and included accessories reduce on-site preparation time, lower labor costs, and ensure faster installation.

Reliable Performance & Durability

High-quality copper tubing and pre-insulation deliver dependable performance even in demanding HVAC environments, providing long service life and reduced maintenance.

Features of pipe insulation tubing:

With embossed polyethyene film, climate resistant foam, and  thickened insulated cotton, this three-layer insulated mini split copper line set is corrosion-resistant, fireproofing, flame-retarded, thermal insulation, waterproof, shockproof, sound absorption and durable.

Outer Layer: Anti-aging, UV-resistant PE fllm, wear-resistant embossed pattern, antl-aging.

Middle Layer: IXPE foam, dense cell, heat and cold-resistant, impact absorption, no water penetration, good thermal insulation. Water cross-linked PE foam.

Inner Layer: Closed-cell structure, air tightness; good thermal insulation, temperature resistant -40℃~120℃.

25 ft 1/4" x 3/8" Mini Split Installation Kit for HVACR Applications Wholesaler & Supplier

DABUND PIPE in-house tested Mini Split Installation Kit is designed to make installation simple and quick – saving you time and money on each job.

Mini Split Installation Kit

Size	Length	Insulation White PE	Flame Resistant
1/4+3/8	3m/4m/5m/7m/10m	8mm/9mm/10mm/13mm/19mm/25.4mm	M1/B1
1/4+1/2	3m/4m/5m/7m/10m	8mm/9mm/10mm/13mm/19mm/25.4mm	M1/B1
1/4+5/8	3m/4m/5m/7m/10m	8mm/9mm/10mm/13mm/19mm/25.4mm	M1/B1
3/8+5/8	3m/4m/5m/7m/10m	8mm/9mm/10mm/13mm/19mm/25.4mm	M1/B1
3/8+3/4	3m/4m/5m/7m/10m	8mm/9mm/10mm/13mm/19mm/25.4mm	M1/B1
1/2+3/4	3m/4m/5m/7m/10m	8mm/9mm/10mm/13mm/19mm/25.4mm	M1/B1
3/8+7/8	3m/4m/5m/7m/10m	8mm/9mm/10mm/13mm/19mm/25.4mm	M1/B1

1/4 + 3/8 Mini Split Installation Kit used for 0.75TON - 1.0TON mini split air conditioner.

1/4 + 1/2 Mini Split Line Set used for 1.5TON - 2.0TON mini split air conditioning.

1/4 + 5/8 Copper Line Set used for 2.0TON - 2.5TON split air conditioner system.

3/8 + 5/8 Insulated Copper Tube apply for 3.0TON - 4.0TON ductless mini split air conditioner.

3/8 + 3/4 Insulated Copper Tubing used for 4.5TON - 6.0TON split air conditioner installation.

3/8 + 7/8 Insulated Copper Piping apply for 6.0TON - 8.0TON ductless mini split air conditioner.

Air conditioning copper line sets 1/4 + 3/8 used for 0.75P and 1P split air conditioning.

Copper pipe kit 1/4 + 1/2 commonly used for 1.5P and 2P mini split air conditioners.

1/4 + 5/8 Mini Split Installation Kit used for 2P and 2.5air conditioner system.

3/8 + 5/8 Mini-split copper line set apply for 3P and 4P ductless mini split air conditioner.

3/8 + 3/4 Copper pipe kit used for 4.5P and 6P split aircon installation.

3/8 + 7/8 Insulated Copper Piping apply for 6P - 8p TON ductless mini split air conditioner.

1/4 + 3/8 Mini split line set used for 9000BTU and 12000 BTU split air conditioner.

All copper line set 1/4 + 1/2 commonly used for 12000 BTU and 18000 BTU mini split air conditioners.

1/4 + 5/8 Insulated copper line set used for 24000 BTU and 30000 BTU air conditioner system.

3/8 + 5/8 Mini-split line set apply for 36000 BTU and 48000 ductless air conditioner.

3/8 + 3/4 line set kit used for 54000 BTU and 72000 split air conditioner installation.

3/8 + 7/8 Mini Split Installation Kit apply for 72000 BTU - 96000 BTU ductless mini split air conditioner.

Aircon copper line set 1/4 + 3/8 used for 9K and 12K split air conditioner.

Mini Split Installation Kit 1/4 + 1/2 commonly used for 12K and 18K mini split air conditioners.

1/4 + 5/8 Insulated copper line set used for 24K and 30K air conditioner system.

3/8 + 5/8 Mini-split line set apply for 36K and 48K ductless air conditioner.

3/8 + 3/4 Line set kit used for 54K and 72K split air conditioner installation.

3/8 + 7/8 Insulated Copper Piping apply for 72K - 96K ductless mini split air conditioner.

Applications – Where This Installation Kit Can Be Used

This mini split installation kit is suitable for:

• Residential homes and apartments

• Small offices and commercial spaces

• Condos and multifamily buildings

• Heat pump and ductless system installations

• Replacement and retrofit projects

Ideal for HVAC contractors, service technicians, and DIY installers.

Installation Tips & Best Practices

For best results and system performance:

1. Measure the required run length before cutting or adjusting the set.

2. Verify insulation continuity to prevent thermal loss.

3. Torque flare nuts properly to eliminate refrigerant leaks.

4. Ensure proper slope on suction line for effective moisture drainage.

Employing correct HVAC installation practices helps maximize system longevity and efficiency.

DABUND FACTORY

We produce Insulated Copper Pipe, Mini Split Line Set and Aluminum Pipe and HVAC Parts

SGS Certificate

Mini Split Line Set is made of Polypropylene or Black Rubber with UV Resistant, meets ASTM E 84, UL94, ASTM D1056 and ASTM G 21

Exhibition

We join the exhibitions all over the word, just to facilitate customers to experience our mini split line set face to face.

FAQ

1.Q:What is your payment terms?

A:TT,L/C AT SIGHT,CREDIT CARD etc

2.Q:What is your delivery terms?

A:EXW, FOB, CFR, CIF etc

3.Q:Are you trading company or manufacturer?

A:Manufacturer

4.Q:May I get a sample?

A:Yes, we can send you 3pieces free samples.

   You just charge for the express cost is ok.

5.Q:Can I print my logo?

A:Yes of cause, we accept OEM and ODM.

6.Q:How long is your delivery time?

A:Usually 15-20days, if urgent, we can arrange to do in advance and delivery fast.

7.Is this kit compatible with all mini split brands?

Yes, this 25 ft 1/4″ × 3/8″ line set works with most mini split and ductless AC brands sold in the US and global HVAC markets. Always check manufacturer specifications to confirm compatibility.

8. Can I shorten this line set for custom installs?

Yes, this copper line set can be cut to required length. Ensure proper flaring and sealing when trimming to maintain system integrity.

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9.Does this kit require additional insulation?

No — the pre-insulated line set comes ready to install and does not require extra insulation material, saving time and cost.