Professional-grade 30 ft 1/4″ × 3/8″ HVAC installation kit with pre-insulated copper refrigerant lines and essential installation components — engineered for efficient and reliable ductless AC and mini split HVAC system installs.
The AC Installation Kit is twin already. So buy it now.
Product Overview – All-In-One HVAC Installation Solution
The 30 ft 1/4″ × 3/8″ HVAC installation kit combines a pre-insulated refrigerant line set with all key accessories needed for a complete installation. Whether you’re installing a new mini split system or upgrading an existing HVAC setup, this ready-to-install kit simplifies the process and reduces installation time.
Pre-Insulated Copper Refrigerant Line Set
This kit includes:
1/4″ liquid line for refrigerant feed
3/8″ suction line for return vapor
30 ft total length — ideal for medium-range indoor-to-outdoor runs
Factory insulation reduces heat gain/loss and minimizes condensation
Pre-flared ends and flare nuts for secure leak-resistant connections
Complete Installation Accessories Included
Included components make HVAC installs clean and professional:
High-quality refrigerant lines with insulation
Communication wiring cable for indoor/outdoor unit linkage
Condensate drain hose for moisture management
Wall pipe & protective cover for neat penetrations
Fittings and connectors for secure assembly
Key Features & Benefits
Streamlines HVAC Installation
Bundling all required components into one kit reduces the need to source parts separately, saving time and reducing potential errors on the job site.
Enhanced Thermal Efficiency
Factory-applied insulation maintains optimal refrigerant temperatures over the 30 ft run, improving system efficiency and thermal performance.
Condensation & Moisture Control
Insulated lines significantly reduce surface condensation — a key advantage in humid environments — protecting walls, ceilings, and surfaces from water damage.
Features of pipe insulation tubing:
![White PE Embossed insulated pipe]( "insulated pipe")
HVAC Compatibility & Applications
Designed for Mini Split & Ductless AC Systems
This kit is perfect for:
Mini split air conditioners
Ductless heat pump installations
Residential HVAC setups
Light commercial projects
The 30 ft line set is ideal when indoor and outdoor units are moderately spaced apart.
Works With Standard HVAC Refrigerants
Compatible with commonly used refrigerants such as R410A, R32, and other standard refrigerant types when installed according to manufacturer and local code requirements.
Technical Specifications
| Feature | Specification |
| Line Set Length | 30 ft (≈9.14 m) |
| Liquid Line Diameter | 1/4″ (≈6.35 mm) |
| Suction Line Diameter | 3/8″ (≈9.52 mm) |
| Material | 99.9% Pure Copper |
| Insulation | Factory-applied thermal insulation |
| Included Accessories | Wiring cable, drain hose, wall pipe & cover |
| Applications | Mini split, ductless AC, heat pump installs |
| Compatible Refrigerants | R410A, R32, and similar HVAC refrigerants |
Installation Tips for Optimal Performance
Plan Your Line Run Before Installation
Measure the distance between indoor and outdoor units and visualize the routing path before starting. A well-planned run avoids tight bends and helps preserve insulation integrity.
Protect Insulation at Wall Penetrations
Use the included wall pipe and protective cover when routing through walls — this helps maintain insulation condition and prevents abrasion or tearing.
Secure Tubing With Appropriate Supports
Use HVAC-rated clips or brackets along the line run to minimize vibration, reduce sagging, and maintain insulation performance over time.
![copper pipe kit]( "Copper pipe kit")
HVAC 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 HVAC 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 HVAC Installation Kit used for 4.5P and 6P split aircon installation.
3/8 + 7/8 AC Installation Kit 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 AC Installation Kit 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 HVAC Installation 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.
HVAC Installation Kit 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 AC Installation Kit 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.
Why Choose This 30 ft HVAC Installation Kit
All-In-One Solution Saves Time & Hassle
By including all essential components in one kit, you avoid the hassle of purchasing individual parts — saving time and streamlining the workflow for installers.
Factory Insulation for Reliable Performance
Factory-applied insulation on the refrigerant lines ensures consistent thermal performance and reduces installation errors common with field-wrapped insulation.
Ideal for a Range of Installations
Whether you’re installing a mini split in a home, office, or light commercial space, this kit supports a variety of HVAC setups with moderate indoor-to-outdoor unit distances.
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 do “1/4″ × 3/8″” mean in this kit?
It describes the outer diameters of the copper refrigerant lines: 1/4″ liquid line and 3/8″ suction line, a common size pairing for many mini split and ductless HVAC systems.
8.Is the line set insulated?
Yes — the refrigerant lines come with factory-applied insulation that helps minimize thermal loss and reduces surface condensation without additional field insulation.
9.Can this installation kit be used outdoors?
Yes — the insulation jacket is UV-resistant and weather-durable, making it suitable for outdoor refrigerant runs.
10.Is this kit compatible with R410A systems?
Yes — this kit supports standard refrigerants like R410A and R32 when installed according to system and local code requirements.
