Upgrade your ductless cooling installation with this 50 ft 1/4″ × 1/2″ mini split air conditioner kit — a comprehensive solution including pre-insulated copper refrigerant lines and essential HVAC installation accessories designed for residential and light commercial applications.
Product Overview – All-In-One HVAC Installation Kit
The 50 ft 1/4″ × 1/2″ mini split air conditioner kit combines a pre-insulated copper refrigerant line set with key installation components to streamline HVAC installs. Whether you are installing a new system or replacing old lines, this kit gives you everything you need in one box for a professional, worry-free setup.
Pre-Insulated Copper Line Set for Thermal Efficiency
1/4″ liquid line – delivers refrigerant from the outdoor unit
1/2″ suction line – returns refrigerant vapor back to the compressor
Factory-applied insulation helps maintain refrigerant temperature
Reduces heat loss and minimizes condensation
Ideal for runs of up to 50 ft between indoor and outdoor units
Complete HVAC Accessories Included
This comprehensive kit includes:
Insulated copper refrigerant lines with pre-flared ends
Communication wiring cable for reliable signal connection
Condensate drain hose to manage moisture
Wall pipe and protective cover for neat line entry
Essential flare nuts and connectors for secure fitting
Key Features & Benefits
Smooth & Efficient Installation Process
With all necessary components bundled into one kit, you save time and avoid sourcing parts separately. This makes installation easier for both HVAC professionals and experienced DIYers.
Improved HVAC Performance
Pre-insulated copper tubing maintains consistent refrigerant temperature, which helps your mini split operate more efficiently and reduces unnecessary energy loss across longer line runs.
Condensation Control & Moisture Protection
The factory-applied insulation significantly reduces surface condensation, protecting interior walls, ceilings, and floors from water damage during cooling cycles — a common issue in humid areas.
HVAC Compatibility & Recommended Applications
Ideal for Mini Split & Ductless Systems
Perfectly suited for:
Ductless mini split air conditioners
Heat pump systems
Residential HVAC projects
Light commercial applications
The 50 ft line set offers flexibility when indoor and outdoor units are spaced apart without requiring extra custom line extensions.
Compatible With Standard HVAC Refrigerants
Designed to work with common modern refrigerants including R410A, R32, and other industry-standard types when installed according to manufacturer and local code guidelines.
Features of pipe insulation tubing:
● Pipe Insulation, Material Black Rubber, Temp Range -40 Degrees to 120 Degrees.
● The pipe insulation has a better function of moisture condensation. Insulation material is both the insulation layer and moisture-proof layer.
● There is no need to drop the water vapor permeation protective layer so that it has a better moisture condensation function.
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Technical Specifications
| Feature | Detail |
| Line Set Length | 50 ft (15.24 m) |
| Liquid Line Diameter | 1/4″ (≈6.35 mm) |
| Suction Line Diameter | 1/2″ (≈12.70 mm) |
| Material | 99.9% Pure Copper |
| Insulation | Factory-applied thermal insulation |
| Included Accessories | Wiring cable, drain hose, wall pipe & cover |
| Applications | Mini split AC, ductless HVAC, heat pumps |
| Refrigerant Compatibility | R410A, R32, and other standard HVAC refrigerants |
Installation Tips for Best Results
Plan Your Line Path Before Starting
Measure the total run distance between indoor and outdoor units and plan the routing path to avoid tight bends, pinch points, or unnecessary stress on refrigerant lines and insulation.
Protect Insulation at Wall Penetrations
Use the included wall pipe and cover to protect the line set insulation where the lines pass through walls or exterior surfaces. This helps maintain insulation integrity and a neat appearance.
Secure Line Set with Proper Supports
Use HVAC-rated straps, clips, or brackets along the line set run to prevent sagging, reduce vibration, and maintain insulation performance over time.
![Black rubber copper pipe kit]( "Black rubber copper pipe kit")
Mini Split Air Conditioner Kit
Size | Length | Insulation Black Rubber | 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 Air Conditioner Kit used for 0.75TON - 1.0TON mini split air conditioner.
1/4 + 1/2 All Insulated Copper Line Set used for 1.5TON - 2.0TON mini split air conditioning.
1/4 + 5/8 Insulated Copper Piping 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 Air Conditioner 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 Pipe 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 Air Conditioner 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.
High quality copper line set 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 Mini Split Air Conditioner Kit apply for 72K - 96K ductless mini split air conditioner.
Why Choose This 50 ft Mini Split Air Conditioner Kit
Complete Package Saves Time & Hassle
This kit bundles refrigerant lines, wiring, drain hose, and wall accessories into a single package so you don’t need to hunt for parts and accessories separately.
Durable Materials for Long-Term Performance
Constructed of high-purity copper and quality insulation, this kit is built to last through varying climates and continuous HVAC operation cycles.
Perfect for Residential & Light Commercial Use
Whether you’re working on a home install, an apartment project, or a small commercial build, this 50 ft air conditioner kit provides flexibility, performance, and peace of mind.
DABUND FACTORY
We produce Insulated Copper Pipe, Mini Split Line Set and Aluminum Pipe and HVAC Parts
![Factory Profile]( "Factory Profile")
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
![证书]( "证书")
Exhibition
We join the exhibitions all over the word, just to facilitate customers to experience our mini split line set face to face.
![TRADE SHOW]( "TRADE SHOW")
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.What does “1/4″ × 1/2″” indicate in this kit?
It refers to the outer diameters of the copper refrigerant lines: 1/4″ liquid line (carries refrigerant to the indoor unit) and 1/2″ suction line (returns refrigerant vapor), a common configuration for many mini split and ductless AC systems.
8.Is the refrigeration line pre-insulated?
Yes — the copper refrigerant lines come with factory-applied insulation that helps reduce thermal loss and condensation without additional field wrapping.
9.Is this kit suitable for outdoor use?
Yes — the insulation is weather-resistant and designed to withstand outdoor exposure between indoor and outdoor HVAC components.
10.Can this kit be used with R410A mini split systems?
Yes — this installation kit is compatible with popular refrigerants including R410A and R32 when installed according to system specifications and local codes.
