Choosing the best copper line set is crucial for efficient and reliable mini split air conditioner installation. These line sets connect the indoor and outdoor units, ensuring optimal refrigerant flow. Our selection features various lengths, insulation types, and pipe dimensions to match your specific HVAC needs. Below is a summary table with key features of the top copper line sets available on Amazon.
Product Name | Brand | Length | Pipe Sizes | Insulation Type | Link |
---|---|---|---|---|---|
13 Ft Mini Split Line Set Air Conditioning Copper Tubing Pipe Extension 1/4″ & 3/8″ PE Thickened | HOXHA | 13 Ft | 1/4″ & 3/8″ | Triple Layer (PE film, foam, cotton) | View on Amazon |
Senville 16 Ft. Insulated Copper Line Set for Mini Split Air Conditioner | Senville | 16 Ft | 1/4″ & 3/8″ | UV Resistant Insulation | View on Amazon |
TADERUILY 33 Ft Mini Split Line Set, Copper Tubing with Nuts | TADERUILY | 33 Ft | 1/4″ & 3/8″ | Thickened Insulated | View on Amazon |
TAUROX 10FT Mini Split Line Set 1/4″ & 1/2″ Copper Pipes with Flared Nuts | TAUROX | 10 Ft | 1/4″ & 1/2″ | 3/8″ White Thickened PE Foam | View on Amazon |
ROVSUN 25 Ft Mini Split Line Set, Flared Copper Tubing & PE Insulation with Nuts and Installation Kit | ROVSUN | 25 Ft | 1/4″ & 3/8″ | Triple-Layer Insulated Cotton | View on Amazon |
Content Navigation
- HOXHA 13 Ft Mini Split Copper Line Set
- Senville 16 Ft. Insulated Copper Line Set with Wiring Harness
- TADERUILY 33 Ft Mini Split Copper Line Set
- TAUROX 10 Ft Mini Split Line Set With Flared Nuts
- ROVSUN 25 Ft Line Set With Triple-Layer Insulation and Installation Kit
- Buying Guide: How To Choose The Best Copper Line Set For Your Mini Split
HOXHA 13 Ft Mini Split Copper Line Set

The HOXHA 13 Ft Mini Split Line Set features high-quality copper tubing with a thickened wall—0.65mm for 1/4″ and 3/8″ tubes—providing enhanced durability under high pressure and temperature. The triple-layer insulation includes an embossed polyethylene film, weather-resistant foam, and thickened insulating cotton to deliver excellent thermal protection.
This line set uses the universal standard size of 1/4″ and 3/8″ copper pipes, compatible with most mini split air conditioners. Its fire-retardant insulation enhances safety during operation, making it well-suited for reliable air conditioning and heating systems.
Senville 16 Ft. Insulated Copper Line Set with Wiring Harness

The Senville 16 Ft. Line Set offers a pre-flared copper line set including wiring harness and pre-installed flared fittings for easy installation. The set is equipped with UV-resistant insulation that protects against weather damage and degradation, extending longevity outdoors.
Fittings are designed with nut sizes of 5/8″ and 7/16″ to fit the majority of mini split brands on the market. This complete installation kit reduces installation time and integrates smoothly with various mini split systems for air conditioning and heating.
TADERUILY 33 Ft Mini Split Copper Line Set

This TADERUILY 33 Ft line set is designed for high and low pressure without leaks, suitable for ductless mini split air conditioners and heat pumps. The tubing uses standard 1/4″ and 3/8″ outer diameters, allowing broad compatibility with HVAC equipment.
The copper tubing is coated with thick insulation to improve efficiency and prevent heat loss. With a longer 33 ft. length, this set accommodates extended installation runs where the outdoor unit might be positioned far from the indoor unit.
TAUROX 10 Ft Mini Split Line Set With Flared Nuts

The TAUROX 10 Ft Mini Split Line Set features copper tubes sized 1/4″ and 1/2″ outer diameters, with 3/8″ thickened white PE insulation offering robust thermal protection. Pre-flared ends with nuts simplify connections and help ensure a leak-free installation.
The pipes are crafted to withstand high and low pressure conditions, supporting reliability in HVAC systems. This compact length is ideal for shorter runs or installations where space is limited, while still maintaining professional-grade construction.
ROVSUN 25 Ft Line Set With Triple-Layer Insulation and Installation Kit

The ROVSUN 25 Ft Line Set boasts premium seamless copper pipes with high toughness to resist corrosion and ruptures. It includes 1/4″ and 3/8″ lines with flared ends precision-engineered for leak-free connections. Protected by a triple-layer insulation system, it excels at thermal insulation and aging resistance.
This line set comes with anti-cracking thickened nuts and protective caps to maintain durability and cleanliness during storage and installation. Its insulation is made from embossed polyethylene film, weather-resistant foam, and thickened cotton to enhance heat retention and weather tolerance.
Buying Guide: How To Choose The Best Copper Line Set For Your Mini Split
When selecting a copper line set for a mini split AC system, several key factors determine the right choice for your installation:
1. Pipe Diameter and Length
Choose the correct pipe diameter (typically 1/4″ for the liquid line and 3/8″ or 1/2″ for the suction line) according to your mini split’s specifications. The length should accommodate the distance between the indoor and outdoor units, with some extra for adjustments.
2. Insulation Quality
Premium insulation reduces energy loss and prevents condensation. Triple-layer insulation, including polyethylene film, foam, and insulating cotton, provides superior protection compared to single-layer options. UV and weather resistance enhance outdoor durability.
3. Wall Thickness of Copper Tubing
Thicker walls (0.65mm or higher) improve durability, especially in climates with high pressure fluctuations or temperature extremes. This minimizes the risk of leaks and ruptures.
4. Pre-Flared Fittings and Installation Kit
Pre-flared ends with compatible nuts simplify installation and help ensure leak-proof connections. Some sets include wiring harnesses and installation kits, providing added convenience.
5. Compatibility With HVAC System
Verify the line set suits your mini split brand and model. Universal sizes fit most units, but confirm the fittings and pipe dimensions align with your system requirements.
6. Environmental Resistance
Look for flame retardant, fireproof, and corrosion-resistant properties in the materials to maximize safety and longevity.
By considering these factors, you can select a copper line set that ensures optimal performance, durability, and ease of installation for your mini split air conditioning system.